blob: 2180319ddb1dd0300dfc3594f991b85972e3eebe [file] [log] [blame]
// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Google Mock - a framework for writing C++ mock classes.
//
// This is the main header file a user should include.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_H_
// This file implements the following syntax:
//
// ON_CALL(mock_object.Method(...))
// .With(...) ?
// .WillByDefault(...);
//
// where With() is optional and WillByDefault() must appear exactly
// once.
//
// EXPECT_CALL(mock_object.Method(...))
// .With(...) ?
// .Times(...) ?
// .InSequence(...) *
// .WillOnce(...) *
// .WillRepeatedly(...) ?
// .RetiresOnSaturation() ? ;
//
// where all clauses are optional and WillOnce() can be repeated.
// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Google Mock - a framework for writing C++ mock classes.
//
// This file implements some commonly used actions.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
#ifndef _WIN32_WCE
# include <errno.h>
#endif
#include <algorithm>
#include <functional>
#include <memory>
#include <string>
#include <type_traits>
#include <utility>
// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Google Mock - a framework for writing C++ mock classes.
//
// This file defines some utilities useful for implementing Google
// Mock. They are subject to change without notice, so please DO NOT
// USE THEM IN USER CODE.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
#define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
#include <stdio.h>
#include <ostream> // NOLINT
#include <string>
#include <type_traits>
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Low-level types and utilities for porting Google Mock to various
// platforms. All macros ending with _ and symbols defined in an
// internal namespace are subject to change without notice. Code
// outside Google Mock MUST NOT USE THEM DIRECTLY. Macros that don't
// end with _ are part of Google Mock's public API and can be used by
// code outside Google Mock.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_
#define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_
#include <assert.h>
#include <stdlib.h>
#include <iostream>
// Most of the utilities needed for porting Google Mock are also
// required for Google Test and are defined in gtest-port.h.
//
// Note to maintainers: to reduce code duplication, prefer adding
// portability utilities to Google Test's gtest-port.h instead of
// here, as Google Mock depends on Google Test. Only add a utility
// here if it's truly specific to Google Mock.
#include "gtest/gtest.h"
// Copyright 2015, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Injection point for custom user configurations. See README for details
//
// ** Custom implementation starts here **
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_PORT_H_
#define GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_PORT_H_
#endif // GMOCK_INCLUDE_GMOCK_INTERNAL_CUSTOM_GMOCK_PORT_H_
// For MS Visual C++, check the compiler version. At least VS 2015 is
// required to compile Google Mock.
#if defined(_MSC_VER) && _MSC_VER < 1900
# error "At least Visual C++ 2015 (14.0) is required to compile Google Mock."
#endif
// Macro for referencing flags. This is public as we want the user to
// use this syntax to reference Google Mock flags.
#define GMOCK_FLAG(name) FLAGS_gmock_##name
#if !defined(GMOCK_DECLARE_bool_)
// Macros for declaring flags.
# define GMOCK_DECLARE_bool_(name) extern GTEST_API_ bool GMOCK_FLAG(name)
# define GMOCK_DECLARE_int32_(name) \
extern GTEST_API_ ::testing::internal::Int32 GMOCK_FLAG(name)
# define GMOCK_DECLARE_string_(name) \
extern GTEST_API_ ::std::string GMOCK_FLAG(name)
// Macros for defining flags.
# define GMOCK_DEFINE_bool_(name, default_val, doc) \
GTEST_API_ bool GMOCK_FLAG(name) = (default_val)
# define GMOCK_DEFINE_int32_(name, default_val, doc) \
GTEST_API_ ::testing::internal::Int32 GMOCK_FLAG(name) = (default_val)
# define GMOCK_DEFINE_string_(name, default_val, doc) \
GTEST_API_ ::std::string GMOCK_FLAG(name) = (default_val)
#endif // !defined(GMOCK_DECLARE_bool_)
#endif // GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_PORT_H_
namespace testing {
template <typename>
class Matcher;
namespace internal {
// Silence MSVC C4100 (unreferenced formal parameter) and
// C4805('==': unsafe mix of type 'const int' and type 'const bool')
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4100)
# pragma warning(disable:4805)
#endif
// Joins a vector of strings as if they are fields of a tuple; returns
// the joined string.
GTEST_API_ std::string JoinAsTuple(const Strings& fields);
// Converts an identifier name to a space-separated list of lower-case
// words. Each maximum substring of the form [A-Za-z][a-z]*|\d+ is
// treated as one word. For example, both "FooBar123" and
// "foo_bar_123" are converted to "foo bar 123".
GTEST_API_ std::string ConvertIdentifierNameToWords(const char* id_name);
// PointeeOf<Pointer>::type is the type of a value pointed to by a
// Pointer, which can be either a smart pointer or a raw pointer. The
// following default implementation is for the case where Pointer is a
// smart pointer.
template <typename Pointer>
struct PointeeOf {
// Smart pointer classes define type element_type as the type of
// their pointees.
typedef typename Pointer::element_type type;
};
// This specialization is for the raw pointer case.
template <typename T>
struct PointeeOf<T*> { typedef T type; }; // NOLINT
// GetRawPointer(p) returns the raw pointer underlying p when p is a
// smart pointer, or returns p itself when p is already a raw pointer.
// The following default implementation is for the smart pointer case.
template <typename Pointer>
inline const typename Pointer::element_type* GetRawPointer(const Pointer& p) {
return p.get();
}
// This overloaded version is for the raw pointer case.
template <typename Element>
inline Element* GetRawPointer(Element* p) { return p; }
// MSVC treats wchar_t as a native type usually, but treats it as the
// same as unsigned short when the compiler option /Zc:wchar_t- is
// specified. It defines _NATIVE_WCHAR_T_DEFINED symbol when wchar_t
// is a native type.
#if defined(_MSC_VER) && !defined(_NATIVE_WCHAR_T_DEFINED)
// wchar_t is a typedef.
#else
# define GMOCK_WCHAR_T_IS_NATIVE_ 1
#endif
// signed wchar_t and unsigned wchar_t are NOT in the C++ standard.
// Using them is a bad practice and not portable. So DON'T use them.
//
// Still, Google Mock is designed to work even if the user uses signed
// wchar_t or unsigned wchar_t (obviously, assuming the compiler
// supports them).
//
// To gcc,
// wchar_t == signed wchar_t != unsigned wchar_t == unsigned int
#ifdef __GNUC__
#if !defined(__WCHAR_UNSIGNED__)
// signed/unsigned wchar_t are valid types.
# define GMOCK_HAS_SIGNED_WCHAR_T_ 1
#endif
#endif
// In what follows, we use the term "kind" to indicate whether a type
// is bool, an integer type (excluding bool), a floating-point type,
// or none of them. This categorization is useful for determining
// when a matcher argument type can be safely converted to another
// type in the implementation of SafeMatcherCast.
enum TypeKind {
kBool, kInteger, kFloatingPoint, kOther
};
// KindOf<T>::value is the kind of type T.
template <typename T> struct KindOf {
enum { value = kOther }; // The default kind.
};
// This macro declares that the kind of 'type' is 'kind'.
#define GMOCK_DECLARE_KIND_(type, kind) \
template <> struct KindOf<type> { enum { value = kind }; }
GMOCK_DECLARE_KIND_(bool, kBool);
// All standard integer types.
GMOCK_DECLARE_KIND_(char, kInteger);
GMOCK_DECLARE_KIND_(signed char, kInteger);
GMOCK_DECLARE_KIND_(unsigned char, kInteger);
GMOCK_DECLARE_KIND_(short, kInteger); // NOLINT
GMOCK_DECLARE_KIND_(unsigned short, kInteger); // NOLINT
GMOCK_DECLARE_KIND_(int, kInteger);
GMOCK_DECLARE_KIND_(unsigned int, kInteger);
GMOCK_DECLARE_KIND_(long, kInteger); // NOLINT
GMOCK_DECLARE_KIND_(unsigned long, kInteger); // NOLINT
#if GMOCK_WCHAR_T_IS_NATIVE_
GMOCK_DECLARE_KIND_(wchar_t, kInteger);
#endif
// Non-standard integer types.
GMOCK_DECLARE_KIND_(Int64, kInteger);
GMOCK_DECLARE_KIND_(UInt64, kInteger);
// All standard floating-point types.
GMOCK_DECLARE_KIND_(float, kFloatingPoint);
GMOCK_DECLARE_KIND_(double, kFloatingPoint);
GMOCK_DECLARE_KIND_(long double, kFloatingPoint);
#undef GMOCK_DECLARE_KIND_
// Evaluates to the kind of 'type'.
#define GMOCK_KIND_OF_(type) \
static_cast< ::testing::internal::TypeKind>( \
::testing::internal::KindOf<type>::value)
// Evaluates to true iff integer type T is signed.
#define GMOCK_IS_SIGNED_(T) (static_cast<T>(-1) < 0)
// LosslessArithmeticConvertibleImpl<kFromKind, From, kToKind, To>::value
// is true iff arithmetic type From can be losslessly converted to
// arithmetic type To.
//
// It's the user's responsibility to ensure that both From and To are
// raw (i.e. has no CV modifier, is not a pointer, and is not a
// reference) built-in arithmetic types, kFromKind is the kind of
// From, and kToKind is the kind of To; the value is
// implementation-defined when the above pre-condition is violated.
template <TypeKind kFromKind, typename From, TypeKind kToKind, typename To>
struct LosslessArithmeticConvertibleImpl : public false_type {};
// Converting bool to bool is lossless.
template <>
struct LosslessArithmeticConvertibleImpl<kBool, bool, kBool, bool>
: public true_type {}; // NOLINT
// Converting bool to any integer type is lossless.
template <typename To>
struct LosslessArithmeticConvertibleImpl<kBool, bool, kInteger, To>
: public true_type {}; // NOLINT
// Converting bool to any floating-point type is lossless.
template <typename To>
struct LosslessArithmeticConvertibleImpl<kBool, bool, kFloatingPoint, To>
: public true_type {}; // NOLINT
// Converting an integer to bool is lossy.
template <typename From>
struct LosslessArithmeticConvertibleImpl<kInteger, From, kBool, bool>
: public false_type {}; // NOLINT
// Converting an integer to another non-bool integer is lossless iff
// the target type's range encloses the source type's range.
template <typename From, typename To>
struct LosslessArithmeticConvertibleImpl<kInteger, From, kInteger, To>
: public bool_constant<
// When converting from a smaller size to a larger size, we are
// fine as long as we are not converting from signed to unsigned.
((sizeof(From) < sizeof(To)) &&
(!GMOCK_IS_SIGNED_(From) || GMOCK_IS_SIGNED_(To))) ||
// When converting between the same size, the signedness must match.
((sizeof(From) == sizeof(To)) &&
(GMOCK_IS_SIGNED_(From) == GMOCK_IS_SIGNED_(To)))> {}; // NOLINT
#undef GMOCK_IS_SIGNED_
// Converting an integer to a floating-point type may be lossy, since
// the format of a floating-point number is implementation-defined.
template <typename From, typename To>
struct LosslessArithmeticConvertibleImpl<kInteger, From, kFloatingPoint, To>
: public false_type {}; // NOLINT
// Converting a floating-point to bool is lossy.
template <typename From>
struct LosslessArithmeticConvertibleImpl<kFloatingPoint, From, kBool, bool>
: public false_type {}; // NOLINT
// Converting a floating-point to an integer is lossy.
template <typename From, typename To>
struct LosslessArithmeticConvertibleImpl<kFloatingPoint, From, kInteger, To>
: public false_type {}; // NOLINT
// Converting a floating-point to another floating-point is lossless
// iff the target type is at least as big as the source type.
template <typename From, typename To>
struct LosslessArithmeticConvertibleImpl<
kFloatingPoint, From, kFloatingPoint, To>
: public bool_constant<sizeof(From) <= sizeof(To)> {}; // NOLINT
// LosslessArithmeticConvertible<From, To>::value is true iff arithmetic
// type From can be losslessly converted to arithmetic type To.
//
// It's the user's responsibility to ensure that both From and To are
// raw (i.e. has no CV modifier, is not a pointer, and is not a
// reference) built-in arithmetic types; the value is
// implementation-defined when the above pre-condition is violated.
template <typename From, typename To>
struct LosslessArithmeticConvertible
: public LosslessArithmeticConvertibleImpl<
GMOCK_KIND_OF_(From), From, GMOCK_KIND_OF_(To), To> {}; // NOLINT
// This interface knows how to report a Google Mock failure (either
// non-fatal or fatal).
class FailureReporterInterface {
public:
// The type of a failure (either non-fatal or fatal).
enum FailureType {
kNonfatal, kFatal
};
virtual ~FailureReporterInterface() {}
// Reports a failure that occurred at the given source file location.
virtual void ReportFailure(FailureType type, const char* file, int line,
const std::string& message) = 0;
};
// Returns the failure reporter used by Google Mock.
GTEST_API_ FailureReporterInterface* GetFailureReporter();
// Asserts that condition is true; aborts the process with the given
// message if condition is false. We cannot use LOG(FATAL) or CHECK()
// as Google Mock might be used to mock the log sink itself. We
// inline this function to prevent it from showing up in the stack
// trace.
inline void Assert(bool condition, const char* file, int line,
const std::string& msg) {
if (!condition) {
GetFailureReporter()->ReportFailure(FailureReporterInterface::kFatal,
file, line, msg);
}
}
inline void Assert(bool condition, const char* file, int line) {
Assert(condition, file, line, "Assertion failed.");
}
// Verifies that condition is true; generates a non-fatal failure if
// condition is false.
inline void Expect(bool condition, const char* file, int line,
const std::string& msg) {
if (!condition) {
GetFailureReporter()->ReportFailure(FailureReporterInterface::kNonfatal,
file, line, msg);
}
}
inline void Expect(bool condition, const char* file, int line) {
Expect(condition, file, line, "Expectation failed.");
}
// Severity level of a log.
enum LogSeverity {
kInfo = 0,
kWarning = 1
};
// Valid values for the --gmock_verbose flag.
// All logs (informational and warnings) are printed.
const char kInfoVerbosity[] = "info";
// Only warnings are printed.
const char kWarningVerbosity[] = "warning";
// No logs are printed.
const char kErrorVerbosity[] = "error";
// Returns true iff a log with the given severity is visible according
// to the --gmock_verbose flag.
GTEST_API_ bool LogIsVisible(LogSeverity severity);
// Prints the given message to stdout iff 'severity' >= the level
// specified by the --gmock_verbose flag. If stack_frames_to_skip >=
// 0, also prints the stack trace excluding the top
// stack_frames_to_skip frames. In opt mode, any positive
// stack_frames_to_skip is treated as 0, since we don't know which
// function calls will be inlined by the compiler and need to be
// conservative.
GTEST_API_ void Log(LogSeverity severity, const std::string& message,
int stack_frames_to_skip);
// A marker class that is used to resolve parameterless expectations to the
// correct overload. This must not be instantiable, to prevent client code from
// accidentally resolving to the overload; for example:
//
// ON_CALL(mock, Method({}, nullptr))...
//
class WithoutMatchers {
private:
WithoutMatchers() {}
friend GTEST_API_ WithoutMatchers GetWithoutMatchers();
};
// Internal use only: access the singleton instance of WithoutMatchers.
GTEST_API_ WithoutMatchers GetWithoutMatchers();
// Type traits.
// is_reference<T>::value is non-zero iff T is a reference type.
template <typename T> struct is_reference : public false_type {};
template <typename T> struct is_reference<T&> : public true_type {};
// type_equals<T1, T2>::value is non-zero iff T1 and T2 are the same type.
template <typename T1, typename T2> struct type_equals : public false_type {};
template <typename T> struct type_equals<T, T> : public true_type {};
// remove_reference<T>::type removes the reference from type T, if any.
template <typename T> struct remove_reference { typedef T type; }; // NOLINT
template <typename T> struct remove_reference<T&> { typedef T type; }; // NOLINT
// DecayArray<T>::type turns an array type U[N] to const U* and preserves
// other types. Useful for saving a copy of a function argument.
template <typename T> struct DecayArray { typedef T type; }; // NOLINT
template <typename T, size_t N> struct DecayArray<T[N]> {
typedef const T* type;
};
// Sometimes people use arrays whose size is not available at the use site
// (e.g. extern const char kNamePrefix[]). This specialization covers that
// case.
template <typename T> struct DecayArray<T[]> {
typedef const T* type;
};
// Disable MSVC warnings for infinite recursion, since in this case the
// the recursion is unreachable.
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4717)
#endif
// Invalid<T>() is usable as an expression of type T, but will terminate
// the program with an assertion failure if actually run. This is useful
// when a value of type T is needed for compilation, but the statement
// will not really be executed (or we don't care if the statement
// crashes).
template <typename T>
inline T Invalid() {
Assert(false, "", -1, "Internal error: attempt to return invalid value");
// This statement is unreachable, and would never terminate even if it
// could be reached. It is provided only to placate compiler warnings
// about missing return statements.
return Invalid<T>();
}
#ifdef _MSC_VER
# pragma warning(pop)
#endif
// Given a raw type (i.e. having no top-level reference or const
// modifier) RawContainer that's either an STL-style container or a
// native array, class StlContainerView<RawContainer> has the
// following members:
//
// - type is a type that provides an STL-style container view to
// (i.e. implements the STL container concept for) RawContainer;
// - const_reference is a type that provides a reference to a const
// RawContainer;
// - ConstReference(raw_container) returns a const reference to an STL-style
// container view to raw_container, which is a RawContainer.
// - Copy(raw_container) returns an STL-style container view of a
// copy of raw_container, which is a RawContainer.
//
// This generic version is used when RawContainer itself is already an
// STL-style container.
template <class RawContainer>
class StlContainerView {
public:
typedef RawContainer type;
typedef const type& const_reference;
static const_reference ConstReference(const RawContainer& container) {
// Ensures that RawContainer is not a const type.
testing::StaticAssertTypeEq<RawContainer,
GTEST_REMOVE_CONST_(RawContainer)>();
return container;
}
static type Copy(const RawContainer& container) { return container; }
};
// This specialization is used when RawContainer is a native array type.
template <typename Element, size_t N>
class StlContainerView<Element[N]> {
public:
typedef GTEST_REMOVE_CONST_(Element) RawElement;
typedef internal::NativeArray<RawElement> type;
// NativeArray<T> can represent a native array either by value or by
// reference (selected by a constructor argument), so 'const type'
// can be used to reference a const native array. We cannot
// 'typedef const type& const_reference' here, as that would mean
// ConstReference() has to return a reference to a local variable.
typedef const type const_reference;
static const_reference ConstReference(const Element (&array)[N]) {
// Ensures that Element is not a const type.
testing::StaticAssertTypeEq<Element, RawElement>();
return type(array, N, RelationToSourceReference());
}
static type Copy(const Element (&array)[N]) {
return type(array, N, RelationToSourceCopy());
}
};
// This specialization is used when RawContainer is a native array
// represented as a (pointer, size) tuple.
template <typename ElementPointer, typename Size>
class StlContainerView< ::std::tuple<ElementPointer, Size> > {
public:
typedef GTEST_REMOVE_CONST_(
typename internal::PointeeOf<ElementPointer>::type) RawElement;
typedef internal::NativeArray<RawElement> type;
typedef const type const_reference;
static const_reference ConstReference(
const ::std::tuple<ElementPointer, Size>& array) {
return type(std::get<0>(array), std::get<1>(array),
RelationToSourceReference());
}
static type Copy(const ::std::tuple<ElementPointer, Size>& array) {
return type(std::get<0>(array), std::get<1>(array), RelationToSourceCopy());
}
};
// The following specialization prevents the user from instantiating
// StlContainer with a reference type.
template <typename T> class StlContainerView<T&>;
// A type transform to remove constness from the first part of a pair.
// Pairs like that are used as the value_type of associative containers,
// and this transform produces a similar but assignable pair.
template <typename T>
struct RemoveConstFromKey {
typedef T type;
};
// Partially specialized to remove constness from std::pair<const K, V>.
template <typename K, typename V>
struct RemoveConstFromKey<std::pair<const K, V> > {
typedef std::pair<K, V> type;
};
// Mapping from booleans to types. Similar to boost::bool_<kValue> and
// std::integral_constant<bool, kValue>.
template <bool kValue>
struct BooleanConstant {};
// Emit an assertion failure due to incorrect DoDefault() usage. Out-of-lined to
// reduce code size.
GTEST_API_ void IllegalDoDefault(const char* file, int line);
// Helper types for Apply() below.
template <size_t... Is> struct int_pack { typedef int_pack type; };
template <class Pack, size_t I> struct append;
template <size_t... Is, size_t I>
struct append<int_pack<Is...>, I> : int_pack<Is..., I> {};
template <size_t C>
struct make_int_pack : append<typename make_int_pack<C - 1>::type, C - 1> {};
template <> struct make_int_pack<0> : int_pack<> {};
template <typename F, typename Tuple, size_t... Idx>
auto ApplyImpl(F&& f, Tuple&& args, int_pack<Idx...>) -> decltype(
std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...)) {
return std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...);
}
// Apply the function to a tuple of arguments.
template <typename F, typename Tuple>
auto Apply(F&& f, Tuple&& args)
-> decltype(ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
make_int_pack<std::tuple_size<Tuple>::value>())) {
return ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
make_int_pack<std::tuple_size<Tuple>::value>());
}
// Template struct Function<F>, where F must be a function type, contains
// the following typedefs:
//
// Result: the function's return type.
// Arg<N>: the type of the N-th argument, where N starts with 0.
// ArgumentTuple: the tuple type consisting of all parameters of F.
// ArgumentMatcherTuple: the tuple type consisting of Matchers for all
// parameters of F.
// MakeResultVoid: the function type obtained by substituting void
// for the return type of F.
// MakeResultIgnoredValue:
// the function type obtained by substituting Something
// for the return type of F.
template <typename T>
struct Function;
template <typename R, typename... Args>
struct Function<R(Args...)> {
using Result = R;
static constexpr size_t ArgumentCount = sizeof...(Args);
template <size_t I>
using Arg = ElemFromList<I, typename MakeIndexSequence<sizeof...(Args)>::type,
Args...>;
using ArgumentTuple = std::tuple<Args...>;
using ArgumentMatcherTuple = std::tuple<Matcher<Args>...>;
using MakeResultVoid = void(Args...);
using MakeResultIgnoredValue = IgnoredValue(Args...);
};
template <typename R, typename... Args>
constexpr size_t Function<R(Args...)>::ArgumentCount;
#ifdef _MSC_VER
# pragma warning(pop)
#endif
} // namespace internal
} // namespace testing
#endif // GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4100)
#endif
namespace testing {
// To implement an action Foo, define:
// 1. a class FooAction that implements the ActionInterface interface, and
// 2. a factory function that creates an Action object from a
// const FooAction*.
//
// The two-level delegation design follows that of Matcher, providing
// consistency for extension developers. It also eases ownership
// management as Action objects can now be copied like plain values.
namespace internal {
// BuiltInDefaultValueGetter<T, true>::Get() returns a
// default-constructed T value. BuiltInDefaultValueGetter<T,
// false>::Get() crashes with an error.
//
// This primary template is used when kDefaultConstructible is true.
template <typename T, bool kDefaultConstructible>
struct BuiltInDefaultValueGetter {
static T Get() { return T(); }
};
template <typename T>
struct BuiltInDefaultValueGetter<T, false> {
static T Get() {
Assert(false, __FILE__, __LINE__,
"Default action undefined for the function return type.");
return internal::Invalid<T>();
// The above statement will never be reached, but is required in
// order for this function to compile.
}
};
// BuiltInDefaultValue<T>::Get() returns the "built-in" default value
// for type T, which is NULL when T is a raw pointer type, 0 when T is
// a numeric type, false when T is bool, or "" when T is string or
// std::string. In addition, in C++11 and above, it turns a
// default-constructed T value if T is default constructible. For any
// other type T, the built-in default T value is undefined, and the
// function will abort the process.
template <typename T>
class BuiltInDefaultValue {
public:
// This function returns true iff type T has a built-in default value.
static bool Exists() {
return ::std::is_default_constructible<T>::value;
}
static T Get() {
return BuiltInDefaultValueGetter<
T, ::std::is_default_constructible<T>::value>::Get();
}
};
// This partial specialization says that we use the same built-in
// default value for T and const T.
template <typename T>
class BuiltInDefaultValue<const T> {
public:
static bool Exists() { return BuiltInDefaultValue<T>::Exists(); }
static T Get() { return BuiltInDefaultValue<T>::Get(); }
};
// This partial specialization defines the default values for pointer
// types.
template <typename T>
class BuiltInDefaultValue<T*> {
public:
static bool Exists() { return true; }
static T* Get() { return nullptr; }
};
// The following specializations define the default values for
// specific types we care about.
#define GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(type, value) \
template <> \
class BuiltInDefaultValue<type> { \
public: \
static bool Exists() { return true; } \
static type Get() { return value; } \
}
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(void, ); // NOLINT
#if GTEST_HAS_GLOBAL_STRING
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(::string, "");
#endif // GTEST_HAS_GLOBAL_STRING
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(::std::string, "");
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(bool, false);
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned char, '\0');
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed char, '\0');
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(char, '\0');
// There's no need for a default action for signed wchar_t, as that
// type is the same as wchar_t for gcc, and invalid for MSVC.
//
// There's also no need for a default action for unsigned wchar_t, as
// that type is the same as unsigned int for gcc, and invalid for
// MSVC.
#if GMOCK_WCHAR_T_IS_NATIVE_
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(wchar_t, 0U); // NOLINT
#endif
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned short, 0U); // NOLINT
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed short, 0); // NOLINT
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned int, 0U);
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed int, 0);
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned long, 0UL); // NOLINT
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed long, 0L); // NOLINT
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(UInt64, 0);
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(Int64, 0);
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(float, 0);
GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(double, 0);
#undef GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_
} // namespace internal
// When an unexpected function call is encountered, Google Mock will
// let it return a default value if the user has specified one for its
// return type, or if the return type has a built-in default value;
// otherwise Google Mock won't know what value to return and will have
// to abort the process.
//
// The DefaultValue<T> class allows a user to specify the
// default value for a type T that is both copyable and publicly
// destructible (i.e. anything that can be used as a function return
// type). The usage is:
//
// // Sets the default value for type T to be foo.
// DefaultValue<T>::Set(foo);
template <typename T>
class DefaultValue {
public:
// Sets the default value for type T; requires T to be
// copy-constructable and have a public destructor.
static void Set(T x) {
delete producer_;
producer_ = new FixedValueProducer(x);
}
// Provides a factory function to be called to generate the default value.
// This method can be used even if T is only move-constructible, but it is not
// limited to that case.
typedef T (*FactoryFunction)();
static void SetFactory(FactoryFunction factory) {
delete producer_;
producer_ = new FactoryValueProducer(factory);
}
// Unsets the default value for type T.
static void Clear() {
delete producer_;
producer_ = nullptr;
}
// Returns true iff the user has set the default value for type T.
static bool IsSet() { return producer_ != nullptr; }
// Returns true if T has a default return value set by the user or there
// exists a built-in default value.
static bool Exists() {
return IsSet() || internal::BuiltInDefaultValue<T>::Exists();
}
// Returns the default value for type T if the user has set one;
// otherwise returns the built-in default value. Requires that Exists()
// is true, which ensures that the return value is well-defined.
static T Get() {
return producer_ == nullptr ? internal::BuiltInDefaultValue<T>::Get()
: producer_->Produce();
}
private:
class ValueProducer {
public:
virtual ~ValueProducer() {}
virtual T Produce() = 0;
};
class FixedValueProducer : public ValueProducer {
public:
explicit FixedValueProducer(T value) : value_(value) {}
T Produce() override { return value_; }
private:
const T value_;
GTEST_DISALLOW_COPY_AND_ASSIGN_(FixedValueProducer);
};
class FactoryValueProducer : public ValueProducer {
public:
explicit FactoryValueProducer(FactoryFunction factory)
: factory_(factory) {}
T Produce() override { return factory_(); }
private:
const FactoryFunction factory_;
GTEST_DISALLOW_COPY_AND_ASSIGN_(FactoryValueProducer);
};
static ValueProducer* producer_;
};
// This partial specialization allows a user to set default values for
// reference types.
template <typename T>
class DefaultValue<T&> {
public:
// Sets the default value for type T&.
static void Set(T& x) { // NOLINT
address_ = &x;
}
// Unsets the default value for type T&.
static void Clear() { address_ = nullptr; }
// Returns true iff the user has set the default value for type T&.
static bool IsSet() { return address_ != nullptr; }
// Returns true if T has a default return value set by the user or there
// exists a built-in default value.
static bool Exists() {
return IsSet() || internal::BuiltInDefaultValue<T&>::Exists();
}
// Returns the default value for type T& if the user has set one;
// otherwise returns the built-in default value if there is one;
// otherwise aborts the process.
static T& Get() {
return address_ == nullptr ? internal::BuiltInDefaultValue<T&>::Get()
: *address_;
}
private:
static T* address_;
};
// This specialization allows DefaultValue<void>::Get() to
// compile.
template <>
class DefaultValue<void> {
public:
static bool Exists() { return true; }
static void Get() {}
};
// Points to the user-set default value for type T.
template <typename T>
typename DefaultValue<T>::ValueProducer* DefaultValue<T>::producer_ = nullptr;
// Points to the user-set default value for type T&.
template <typename T>
T* DefaultValue<T&>::address_ = nullptr;
// Implement this interface to define an action for function type F.
template <typename F>
class ActionInterface {
public:
typedef typename internal::Function<F>::Result Result;
typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
ActionInterface() {}
virtual ~ActionInterface() {}
// Performs the action. This method is not const, as in general an
// action can have side effects and be stateful. For example, a
// get-the-next-element-from-the-collection action will need to
// remember the current element.
virtual Result Perform(const ArgumentTuple& args) = 0;
private:
GTEST_DISALLOW_COPY_AND_ASSIGN_(ActionInterface);
};
// An Action<F> is a copyable and IMMUTABLE (except by assignment)
// object that represents an action to be taken when a mock function
// of type F is called. The implementation of Action<T> is just a
// std::shared_ptr to const ActionInterface<T>. Don't inherit from Action!
// You can view an object implementing ActionInterface<F> as a
// concrete action (including its current state), and an Action<F>
// object as a handle to it.
template <typename F>
class Action {
// Adapter class to allow constructing Action from a legacy ActionInterface.
// New code should create Actions from functors instead.
struct ActionAdapter {
// Adapter must be copyable to satisfy std::function requirements.
::std::shared_ptr<ActionInterface<F>> impl_;
template <typename... Args>
typename internal::Function<F>::Result operator()(Args&&... args) {
return impl_->Perform(
::std::forward_as_tuple(::std::forward<Args>(args)...));
}
};
public:
typedef typename internal::Function<F>::Result Result;
typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
// Constructs a null Action. Needed for storing Action objects in
// STL containers.
Action() {}
// Construct an Action from a specified callable.
// This cannot take std::function directly, because then Action would not be
// directly constructible from lambda (it would require two conversions).
template <typename G,
typename = typename ::std::enable_if<
::std::is_constructible<::std::function<F>, G>::value>::type>
Action(G&& fun) : fun_(::std::forward<G>(fun)) {} // NOLINT
// Constructs an Action from its implementation.
explicit Action(ActionInterface<F>* impl)
: fun_(ActionAdapter{::std::shared_ptr<ActionInterface<F>>(impl)}) {}
// This constructor allows us to turn an Action<Func> object into an
// Action<F>, as long as F's arguments can be implicitly converted
// to Func's and Func's return type can be implicitly converted to F's.
template <typename Func>
explicit Action(const Action<Func>& action) : fun_(action.fun_) {}
// Returns true iff this is the DoDefault() action.
bool IsDoDefault() const { return fun_ == nullptr; }
// Performs the action. Note that this method is const even though
// the corresponding method in ActionInterface is not. The reason
// is that a const Action<F> means that it cannot be re-bound to
// another concrete action, not that the concrete action it binds to
// cannot change state. (Think of the difference between a const
// pointer and a pointer to const.)
Result Perform(ArgumentTuple args) const {
if (IsDoDefault()) {
internal::IllegalDoDefault(__FILE__, __LINE__);
}
return internal::Apply(fun_, ::std::move(args));
}
private:
template <typename G>
friend class Action;
// fun_ is an empty function iff this is the DoDefault() action.
::std::function<F> fun_;
};
// The PolymorphicAction class template makes it easy to implement a
// polymorphic action (i.e. an action that can be used in mock
// functions of than one type, e.g. Return()).
//
// To define a polymorphic action, a user first provides a COPYABLE
// implementation class that has a Perform() method template:
//
// class FooAction {
// public:
// template <typename Result, typename ArgumentTuple>
// Result Perform(const ArgumentTuple& args) const {
// // Processes the arguments and returns a result, using
// // std::get<N>(args) to get the N-th (0-based) argument in the tuple.
// }
// ...
// };
//
// Then the user creates the polymorphic action using
// MakePolymorphicAction(object) where object has type FooAction. See
// the definition of Return(void) and SetArgumentPointee<N>(value) for
// complete examples.
template <typename Impl>
class PolymorphicAction {
public:
explicit PolymorphicAction(const Impl& impl) : impl_(impl) {}
template <typename F>
operator Action<F>() const {
return Action<F>(new MonomorphicImpl<F>(impl_));
}
private:
template <typename F>
class MonomorphicImpl : public ActionInterface<F> {
public:
typedef typename internal::Function<F>::Result Result;
typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
Result Perform(const ArgumentTuple& args) override {
return impl_.template Perform<Result>(args);
}
private:
Impl impl_;
GTEST_DISALLOW_ASSIGN_(MonomorphicImpl);
};
Impl impl_;
GTEST_DISALLOW_ASSIGN_(PolymorphicAction);
};
// Creates an Action from its implementation and returns it. The
// created Action object owns the implementation.
template <typename F>
Action<F> MakeAction(ActionInterface<F>* impl) {
return Action<F>(impl);
}
// Creates a polymorphic action from its implementation. This is
// easier to use than the PolymorphicAction<Impl> constructor as it
// doesn't require you to explicitly write the template argument, e.g.
//
// MakePolymorphicAction(foo);
// vs
// PolymorphicAction<TypeOfFoo>(foo);
template <typename Impl>
inline PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl) {
return PolymorphicAction<Impl>(impl);
}
namespace internal {
// Helper struct to specialize ReturnAction to execute a move instead of a copy
// on return. Useful for move-only types, but could be used on any type.
template <typename T>
struct ByMoveWrapper {
explicit ByMoveWrapper(T value) : payload(std::move(value)) {}
T payload;
};
// Implements the polymorphic Return(x) action, which can be used in
// any function that returns the type of x, regardless of the argument
// types.
//
// Note: The value passed into Return must be converted into
// Function<F>::Result when this action is cast to Action<F> rather than
// when that action is performed. This is important in scenarios like
//
// MOCK_METHOD1(Method, T(U));
// ...
// {
// Foo foo;
// X x(&foo);
// EXPECT_CALL(mock, Method(_)).WillOnce(Return(x));
// }
//
// In the example above the variable x holds reference to foo which leaves
// scope and gets destroyed. If copying X just copies a reference to foo,
// that copy will be left with a hanging reference. If conversion to T
// makes a copy of foo, the above code is safe. To support that scenario, we
// need to make sure that the type conversion happens inside the EXPECT_CALL
// statement, and conversion of the result of Return to Action<T(U)> is a
// good place for that.
//
// The real life example of the above scenario happens when an invocation
// of gtl::Container() is passed into Return.
//
template <typename R>
class ReturnAction {
public:
// Constructs a ReturnAction object from the value to be returned.
// 'value' is passed by value instead of by const reference in order
// to allow Return("string literal") to compile.
explicit ReturnAction(R value) : value_(new R(std::move(value))) {}
// This template type conversion operator allows Return(x) to be
// used in ANY function that returns x's type.
template <typename F>
operator Action<F>() const { // NOLINT
// Assert statement belongs here because this is the best place to verify
// conditions on F. It produces the clearest error messages
// in most compilers.
// Impl really belongs in this scope as a local class but can't
// because MSVC produces duplicate symbols in different translation units
// in this case. Until MS fixes that bug we put Impl into the class scope
// and put the typedef both here (for use in assert statement) and
// in the Impl class. But both definitions must be the same.
typedef typename Function<F>::Result Result;
GTEST_COMPILE_ASSERT_(
!is_reference<Result>::value,
use_ReturnRef_instead_of_Return_to_return_a_reference);
static_assert(!std::is_void<Result>::value,
"Can't use Return() on an action expected to return `void`.");
return Action<F>(new Impl<R, F>(value_));
}
private:
// Implements the Return(x) action for a particular function type F.
template <typename R_, typename F>
class Impl : public ActionInterface<F> {
public:
typedef typename Function<F>::Result Result;
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
// The implicit cast is necessary when Result has more than one
// single-argument constructor (e.g. Result is std::vector<int>) and R
// has a type conversion operator template. In that case, value_(value)
// won't compile as the compiler doesn't known which constructor of
// Result to call. ImplicitCast_ forces the compiler to convert R to
// Result without considering explicit constructors, thus resolving the
// ambiguity. value_ is then initialized using its copy constructor.
explicit Impl(const std::shared_ptr<R>& value)
: value_before_cast_(*value),
value_(ImplicitCast_<Result>(value_before_cast_)) {}
Result Perform(const ArgumentTuple&) override { return value_; }
private:
GTEST_COMPILE_ASSERT_(!is_reference<Result>::value,
Result_cannot_be_a_reference_type);
// We save the value before casting just in case it is being cast to a
// wrapper type.
R value_before_cast_;
Result value_;
GTEST_DISALLOW_COPY_AND_ASSIGN_(Impl);
};
// Partially specialize for ByMoveWrapper. This version of ReturnAction will
// move its contents instead.
template <typename R_, typename F>
class Impl<ByMoveWrapper<R_>, F> : public ActionInterface<F> {
public:
typedef typename Function<F>::Result Result;
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
explicit Impl(const std::shared_ptr<R>& wrapper)
: performed_(false), wrapper_(wrapper) {}
Result Perform(const ArgumentTuple&) override {
GTEST_CHECK_(!performed_)
<< "A ByMove() action should only be performed once.";
performed_ = true;
return std::move(wrapper_->payload);
}
private:
bool performed_;
const std::shared_ptr<R> wrapper_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
const std::shared_ptr<R> value_;
GTEST_DISALLOW_ASSIGN_(ReturnAction);
};
// Implements the ReturnNull() action.
class ReturnNullAction {
public:
// Allows ReturnNull() to be used in any pointer-returning function. In C++11
// this is enforced by returning nullptr, and in non-C++11 by asserting a
// pointer type on compile time.
template <typename Result, typename ArgumentTuple>
static Result Perform(const ArgumentTuple&) {
return nullptr;
}
};
// Implements the Return() action.
class ReturnVoidAction {
public:
// Allows Return() to be used in any void-returning function.
template <typename Result, typename ArgumentTuple>
static void Perform(const ArgumentTuple&) {
CompileAssertTypesEqual<void, Result>();
}
};
// Implements the polymorphic ReturnRef(x) action, which can be used
// in any function that returns a reference to the type of x,
// regardless of the argument types.
template <typename T>
class ReturnRefAction {
public:
// Constructs a ReturnRefAction object from the reference to be returned.
explicit ReturnRefAction(T& ref) : ref_(ref) {} // NOLINT
// This template type conversion operator allows ReturnRef(x) to be
// used in ANY function that returns a reference to x's type.
template <typename F>
operator Action<F>() const {
typedef typename Function<F>::Result Result;
// Asserts that the function return type is a reference. This
// catches the user error of using ReturnRef(x) when Return(x)
// should be used, and generates some helpful error message.
GTEST_COMPILE_ASSERT_(internal::is_reference<Result>::value,
use_Return_instead_of_ReturnRef_to_return_a_value);
return Action<F>(new Impl<F>(ref_));
}
private:
// Implements the ReturnRef(x) action for a particular function type F.
template <typename F>
class Impl : public ActionInterface<F> {
public:
typedef typename Function<F>::Result Result;
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
explicit Impl(T& ref) : ref_(ref) {} // NOLINT
Result Perform(const ArgumentTuple&) override { return ref_; }
private:
T& ref_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
T& ref_;
GTEST_DISALLOW_ASSIGN_(ReturnRefAction);
};
// Implements the polymorphic ReturnRefOfCopy(x) action, which can be
// used in any function that returns a reference to the type of x,
// regardless of the argument types.
template <typename T>
class ReturnRefOfCopyAction {
public:
// Constructs a ReturnRefOfCopyAction object from the reference to
// be returned.
explicit ReturnRefOfCopyAction(const T& value) : value_(value) {} // NOLINT
// This template type conversion operator allows ReturnRefOfCopy(x) to be
// used in ANY function that returns a reference to x's type.
template <typename F>
operator Action<F>() const {
typedef typename Function<F>::Result Result;
// Asserts that the function return type is a reference. This
// catches the user error of using ReturnRefOfCopy(x) when Return(x)
// should be used, and generates some helpful error message.
GTEST_COMPILE_ASSERT_(
internal::is_reference<Result>::value,
use_Return_instead_of_ReturnRefOfCopy_to_return_a_value);
return Action<F>(new Impl<F>(value_));
}
private:
// Implements the ReturnRefOfCopy(x) action for a particular function type F.
template <typename F>
class Impl : public ActionInterface<F> {
public:
typedef typename Function<F>::Result Result;
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
explicit Impl(const T& value) : value_(value) {} // NOLINT
Result Perform(const ArgumentTuple&) override { return value_; }
private:
T value_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
const T value_;
GTEST_DISALLOW_ASSIGN_(ReturnRefOfCopyAction);
};
// Implements the polymorphic DoDefault() action.
class DoDefaultAction {
public:
// This template type conversion operator allows DoDefault() to be
// used in any function.
template <typename F>
operator Action<F>() const { return Action<F>(); } // NOLINT
};
// Implements the Assign action to set a given pointer referent to a
// particular value.
template <typename T1, typename T2>
class AssignAction {
public:
AssignAction(T1* ptr, T2 value) : ptr_(ptr), value_(value) {}
template <typename Result, typename ArgumentTuple>
void Perform(const ArgumentTuple& /* args */) const {
*ptr_ = value_;
}
private:
T1* const ptr_;
const T2 value_;
GTEST_DISALLOW_ASSIGN_(AssignAction);
};
#if !GTEST_OS_WINDOWS_MOBILE
// Implements the SetErrnoAndReturn action to simulate return from
// various system calls and libc functions.
template <typename T>
class SetErrnoAndReturnAction {
public:
SetErrnoAndReturnAction(int errno_value, T result)
: errno_(errno_value),
result_(result) {}
template <typename Result, typename ArgumentTuple>
Result Perform(const ArgumentTuple& /* args */) const {
errno = errno_;
return result_;
}
private:
const int errno_;
const T result_;
GTEST_DISALLOW_ASSIGN_(SetErrnoAndReturnAction);
};
#endif // !GTEST_OS_WINDOWS_MOBILE
// Implements the SetArgumentPointee<N>(x) action for any function
// whose N-th argument (0-based) is a pointer to x's type. The
// template parameter kIsProto is true iff type A is ProtocolMessage,
// proto2::Message, or a sub-class of those.
template <size_t N, typename A, bool kIsProto>
class SetArgumentPointeeAction {
public:
// Constructs an action that sets the variable pointed to by the
// N-th function argument to 'value'.
explicit SetArgumentPointeeAction(const A& value) : value_(value) {}
template <typename Result, typename ArgumentTuple>
void Perform(const ArgumentTuple& args) const {
CompileAssertTypesEqual<void, Result>();
*::std::get<N>(args) = value_;
}
private:
const A value_;
GTEST_DISALLOW_ASSIGN_(SetArgumentPointeeAction);
};
template <size_t N, typename Proto>
class SetArgumentPointeeAction<N, Proto, true> {
public:
// Constructs an action that sets the variable pointed to by the
// N-th function argument to 'proto'. Both ProtocolMessage and
// proto2::Message have the CopyFrom() method, so the same
// implementation works for both.
explicit SetArgumentPointeeAction(const Proto& proto) : proto_(new Proto) {
proto_->CopyFrom(proto);
}
template <typename Result, typename ArgumentTuple>
void Perform(const ArgumentTuple& args) const {
CompileAssertTypesEqual<void, Result>();
::std::get<N>(args)->CopyFrom(*proto_);
}
private:
const std::shared_ptr<Proto> proto_;
GTEST_DISALLOW_ASSIGN_(SetArgumentPointeeAction);
};
// Implements the Invoke(object_ptr, &Class::Method) action.
template <class Class, typename MethodPtr>
struct InvokeMethodAction {
Class* const obj_ptr;
const MethodPtr method_ptr;
template <typename... Args>
auto operator()(Args&&... args) const
-> decltype((obj_ptr->*method_ptr)(std::forward<Args>(args)...)) {
return (obj_ptr->*method_ptr)(std::forward<Args>(args)...);
}
};
// Implements the InvokeWithoutArgs(f) action. The template argument
// FunctionImpl is the implementation type of f, which can be either a
// function pointer or a functor. InvokeWithoutArgs(f) can be used as an
// Action<F> as long as f's type is compatible with F.
template <typename FunctionImpl>
struct InvokeWithoutArgsAction {
FunctionImpl function_impl;
// Allows InvokeWithoutArgs(f) to be used as any action whose type is
// compatible with f.
template <typename... Args>
auto operator()(const Args&...) -> decltype(function_impl()) {
return function_impl();
}
};
// Implements the InvokeWithoutArgs(object_ptr, &Class::Method) action.
template <class Class, typename MethodPtr>
struct InvokeMethodWithoutArgsAction {
Class* const obj_ptr;
const MethodPtr method_ptr;
using ReturnType = typename std::result_of<MethodPtr(Class*)>::type;
template <typename... Args>
ReturnType operator()(const Args&...) const {
return (obj_ptr->*method_ptr)();
}
};
// Implements the IgnoreResult(action) action.
template <typename A>
class IgnoreResultAction {
public:
explicit IgnoreResultAction(const A& action) : action_(action) {}
template <typename F>
operator Action<F>() const {
// Assert statement belongs here because this is the best place to verify
// conditions on F. It produces the clearest error messages
// in most compilers.
// Impl really belongs in this scope as a local class but can't
// because MSVC produces duplicate symbols in different translation units
// in this case. Until MS fixes that bug we put Impl into the class scope
// and put the typedef both here (for use in assert statement) and
// in the Impl class. But both definitions must be the same.
typedef typename internal::Function<F>::Result Result;
// Asserts at compile time that F returns void.
CompileAssertTypesEqual<void, Result>();
return Action<F>(new Impl<F>(action_));
}
private:
template <typename F>
class Impl : public ActionInterface<F> {
public:
typedef typename internal::Function<F>::Result Result;
typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
explicit Impl(const A& action) : action_(action) {}
void Perform(const ArgumentTuple& args) override {
// Performs the action and ignores its result.
action_.Perform(args);
}
private:
// Type OriginalFunction is the same as F except that its return
// type is IgnoredValue.
typedef typename internal::Function<F>::MakeResultIgnoredValue
OriginalFunction;
const Action<OriginalFunction> action_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
const A action_;
GTEST_DISALLOW_ASSIGN_(IgnoreResultAction);
};
template <typename InnerAction, size_t... I>
struct WithArgsAction {
InnerAction action;
// The inner action could be anything convertible to Action<X>.
// We use the conversion operator to detect the signature of the inner Action.
template <typename R, typename... Args>
operator Action<R(Args...)>() const { // NOLINT
Action<R(typename std::tuple_element<I, std::tuple<Args...>>::type...)>
converted(action);
return [converted](Args... args) -> R {
return converted.Perform(std::forward_as_tuple(
std::get<I>(std::forward_as_tuple(std::forward<Args>(args)...))...));
};
}
};
template <typename... Actions>
struct DoAllAction {
private:
template <typename... Args, size_t... I>
std::vector<Action<void(Args...)>> Convert(IndexSequence<I...>) const {
return {std::get<I>(actions)...};
}
public:
std::tuple<Actions...> actions;
template <typename R, typename... Args>
operator Action<R(Args...)>() const { // NOLINT
struct Op {
std::vector<Action<void(Args...)>> converted;
Action<R(Args...)> last;
R operator()(Args... args) const {
auto tuple_args = std::forward_as_tuple(std::forward<Args>(args)...);
for (auto& a : converted) {
a.Perform(tuple_args);
}
return last.Perform(tuple_args);
}
};
return Op{Convert<Args...>(MakeIndexSequence<sizeof...(Actions) - 1>()),
std::get<sizeof...(Actions) - 1>(actions)};
}
};
} // namespace internal
// An Unused object can be implicitly constructed from ANY value.
// This is handy when defining actions that ignore some or all of the
// mock function arguments. For example, given
//
// MOCK_METHOD3(Foo, double(const string& label, double x, double y));
// MOCK_METHOD3(Bar, double(int index, double x, double y));
//
// instead of
//
// double DistanceToOriginWithLabel(const string& label, double x, double y) {
// return sqrt(x*x + y*y);
// }
// double DistanceToOriginWithIndex(int index, double x, double y) {
// return sqrt(x*x + y*y);
// }
// ...
// EXPECT_CALL(mock, Foo("abc", _, _))
// .WillOnce(Invoke(DistanceToOriginWithLabel));
// EXPECT_CALL(mock, Bar(5, _, _))
// .WillOnce(Invoke(DistanceToOriginWithIndex));
//
// you could write
//
// // We can declare any uninteresting argument as Unused.
// double DistanceToOrigin(Unused, double x, double y) {
// return sqrt(x*x + y*y);
// }
// ...
// EXPECT_CALL(mock, Foo("abc", _, _)).WillOnce(Invoke(DistanceToOrigin));
// EXPECT_CALL(mock, Bar(5, _, _)).WillOnce(Invoke(DistanceToOrigin));
typedef internal::IgnoredValue Unused;
// Creates an action that does actions a1, a2, ..., sequentially in
// each invocation.
template <typename... Action>
internal::DoAllAction<typename std::decay<Action>::type...> DoAll(
Action&&... action) {
return {std::forward_as_tuple(std::forward<Action>(action)...)};
}
// WithArg<k>(an_action) creates an action that passes the k-th
// (0-based) argument of the mock function to an_action and performs
// it. It adapts an action accepting one argument to one that accepts
// multiple arguments. For convenience, we also provide
// WithArgs<k>(an_action) (defined below) as a synonym.
template <size_t k, typename InnerAction>
internal::WithArgsAction<typename std::decay<InnerAction>::type, k>
WithArg(InnerAction&& action) {
return {std::forward<InnerAction>(action)};
}
// WithArgs<N1, N2, ..., Nk>(an_action) creates an action that passes
// the selected arguments of the mock function to an_action and
// performs it. It serves as an adaptor between actions with
// different argument lists.
template <size_t k, size_t... ks, typename InnerAction>
internal::WithArgsAction<typename std::decay<InnerAction>::type, k, ks...>
WithArgs(InnerAction&& action) {
return {std::forward<InnerAction>(action)};
}
// WithoutArgs(inner_action) can be used in a mock function with a
// non-empty argument list to perform inner_action, which takes no
// argument. In other words, it adapts an action accepting no
// argument to one that accepts (and ignores) arguments.
template <typename InnerAction>
internal::WithArgsAction<typename std::decay<InnerAction>::type>
WithoutArgs(InnerAction&& action) {
return {std::forward<InnerAction>(action)};
}
// Creates an action that returns 'value'. 'value' is passed by value
// instead of const reference - otherwise Return("string literal")
// will trigger a compiler error about using array as initializer.
template <typename R>
internal::ReturnAction<R> Return(R value) {
return internal::ReturnAction<R>(std::move(value));
}
// Creates an action that returns NULL.
inline PolymorphicAction<internal::ReturnNullAction> ReturnNull() {
return MakePolymorphicAction(internal::ReturnNullAction());
}
// Creates an action that returns from a void function.
inline PolymorphicAction<internal::ReturnVoidAction> Return() {
return MakePolymorphicAction(internal::ReturnVoidAction());
}
// Creates an action that returns the reference to a variable.
template <typename R>
inline internal::ReturnRefAction<R> ReturnRef(R& x) { // NOLINT
return internal::ReturnRefAction<R>(x);
}
// Creates an action that returns the reference to a copy of the
// argument. The copy is created when the action is constructed and
// lives as long as the action.
template <typename R>
inline internal::ReturnRefOfCopyAction<R> ReturnRefOfCopy(const R& x) {
return internal::ReturnRefOfCopyAction<R>(x);
}
// Modifies the parent action (a Return() action) to perform a move of the
// argument instead of a copy.
// Return(ByMove()) actions can only be executed once and will assert this
// invariant.
template <typename R>
internal::ByMoveWrapper<R> ByMove(R x) {
return internal::ByMoveWrapper<R>(std::move(x));
}
// Creates an action that does the default action for the give mock function.
inline internal::DoDefaultAction DoDefault() {
return internal::DoDefaultAction();
}
// Creates an action that sets the variable pointed by the N-th
// (0-based) function argument to 'value'.
template <size_t N, typename T>
PolymorphicAction<
internal::SetArgumentPointeeAction<
N, T, internal::IsAProtocolMessage<T>::value> >
SetArgPointee(const T& x) {
return MakePolymorphicAction(internal::SetArgumentPointeeAction<
N, T, internal::IsAProtocolMessage<T>::value>(x));
}
template <size_t N>
PolymorphicAction<
internal::SetArgumentPointeeAction<N, const char*, false> >
SetArgPointee(const char* p) {
return MakePolymorphicAction(internal::SetArgumentPointeeAction<
N, const char*, false>(p));
}
template <size_t N>
PolymorphicAction<
internal::SetArgumentPointeeAction<N, const wchar_t*, false> >
SetArgPointee(const wchar_t* p) {
return MakePolymorphicAction(internal::SetArgumentPointeeAction<
N, const wchar_t*, false>(p));
}
// The following version is DEPRECATED.
template <size_t N, typename T>
PolymorphicAction<
internal::SetArgumentPointeeAction<
N, T, internal::IsAProtocolMessage<T>::value> >
SetArgumentPointee(const T& x) {
return MakePolymorphicAction(internal::SetArgumentPointeeAction<
N, T, internal::IsAProtocolMessage<T>::value>(x));
}
// Creates an action that sets a pointer referent to a given value.
template <typename T1, typename T2>
PolymorphicAction<internal::AssignAction<T1, T2> > Assign(T1* ptr, T2 val) {
return MakePolymorphicAction(internal::AssignAction<T1, T2>(ptr, val));
}
#if !GTEST_OS_WINDOWS_MOBILE
// Creates an action that sets errno and returns the appropriate error.
template <typename T>
PolymorphicAction<internal::SetErrnoAndReturnAction<T> >
SetErrnoAndReturn(int errval, T result) {
return MakePolymorphicAction(
internal::SetErrnoAndReturnAction<T>(errval, result));
}
#endif // !GTEST_OS_WINDOWS_MOBILE
// Various overloads for Invoke().
// Legacy function.
// Actions can now be implicitly constructed from callables. No need to create
// wrapper objects.
// This function exists for backwards compatibility.
template <typename FunctionImpl>
typename std::decay<FunctionImpl>::type Invoke(FunctionImpl&& function_impl) {
return std::forward<FunctionImpl>(function_impl);
}
// Creates an action that invokes the given method on the given object
// with the mock function's arguments.
template <class Class, typename MethodPtr>
internal::InvokeMethodAction<Class, MethodPtr> Invoke(Class* obj_ptr,
MethodPtr method_ptr) {
return {obj_ptr, method_ptr};
}
// Creates an action that invokes 'function_impl' with no argument.
template <typename FunctionImpl>
internal::InvokeWithoutArgsAction<typename std::decay<FunctionImpl>::type>
InvokeWithoutArgs(FunctionImpl function_impl) {
return {std::move(function_impl)};
}
// Creates an action that invokes the given method on the given object
// with no argument.
template <class Class, typename MethodPtr>
internal::InvokeMethodWithoutArgsAction<Class, MethodPtr> InvokeWithoutArgs(
Class* obj_ptr, MethodPtr method_ptr) {
return {obj_ptr, method_ptr};
}
// Creates an action that performs an_action and throws away its
// result. In other words, it changes the return type of an_action to
// void. an_action MUST NOT return void, or the code won't compile.
template <typename A>
inline internal::IgnoreResultAction<A> IgnoreResult(const A& an_action) {
return internal::IgnoreResultAction<A>(an_action);
}
// Creates a reference wrapper for the given L-value. If necessary,
// you can explicitly specify the type of the reference. For example,
// suppose 'derived' is an object of type Derived, ByRef(derived)
// would wrap a Derived&. If you want to wrap a const Base& instead,
// where Base is a base class of Derived, just write:
//
// ByRef<const Base>(derived)
//
// N.B. ByRef is redundant with std::ref, std::cref and std::reference_wrapper.
// However, it may still be used for consistency with ByMove().
template <typename T>
inline ::std::reference_wrapper<T> ByRef(T& l_value) { // NOLINT
return ::std::reference_wrapper<T>(l_value);
}
} // namespace testing
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#endif // GMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Google Mock - a framework for writing C++ mock classes.
//
// This file implements some commonly used cardinalities. More
// cardinalities can be defined by the user implementing the
// CardinalityInterface interface if necessary.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
#include <limits.h>
#include <memory>
#include <ostream> // NOLINT
GTEST_DISABLE_MSC_WARNINGS_PUSH_(4251 \
/* class A needs to have dll-interface to be used by clients of class B */)
namespace testing {
// To implement a cardinality Foo, define:
// 1. a class FooCardinality that implements the
// CardinalityInterface interface, and
// 2. a factory function that creates a Cardinality object from a
// const FooCardinality*.
//
// The two-level delegation design follows that of Matcher, providing
// consistency for extension developers. It also eases ownership
// management as Cardinality objects can now be copied like plain values.
// The implementation of a cardinality.
class CardinalityInterface {
public:
virtual ~CardinalityInterface() {}
// Conservative estimate on the lower/upper bound of the number of
// calls allowed.
virtual int ConservativeLowerBound() const { return 0; }
virtual int ConservativeUpperBound() const { return INT_MAX; }
// Returns true iff call_count calls will satisfy this cardinality.
virtual bool IsSatisfiedByCallCount(int call_count) const = 0;
// Returns true iff call_count calls will saturate this cardinality.
virtual bool IsSaturatedByCallCount(int call_count) const = 0;
// Describes self to an ostream.
virtual void DescribeTo(::std::ostream* os) const = 0;
};
// A Cardinality is a copyable and IMMUTABLE (except by assignment)
// object that specifies how many times a mock function is expected to
// be called. The implementation of Cardinality is just a std::shared_ptr
// to const CardinalityInterface. Don't inherit from Cardinality!
class GTEST_API_ Cardinality {
public:
// Constructs a null cardinality. Needed for storing Cardinality
// objects in STL containers.
Cardinality() {}
// Constructs a Cardinality from its implementation.
explicit Cardinality(const CardinalityInterface* impl) : impl_(impl) {}
// Conservative estimate on the lower/upper bound of the number of
// calls allowed.
int ConservativeLowerBound() const { return impl_->ConservativeLowerBound(); }
int ConservativeUpperBound() const { return impl_->ConservativeUpperBound(); }
// Returns true iff call_count calls will satisfy this cardinality.
bool IsSatisfiedByCallCount(int call_count) const {
return impl_->IsSatisfiedByCallCount(call_count);
}
// Returns true iff call_count calls will saturate this cardinality.
bool IsSaturatedByCallCount(int call_count) const {
return impl_->IsSaturatedByCallCount(call_count);
}
// Returns true iff call_count calls will over-saturate this
// cardinality, i.e. exceed the maximum number of allowed calls.
bool IsOverSaturatedByCallCount(int call_count) const {
return impl_->IsSaturatedByCallCount(call_count) &&
!impl_->IsSatisfiedByCallCount(call_count);
}
// Describes self to an ostream
void DescribeTo(::std::ostream* os) const { impl_->DescribeTo(os); }
// Describes the given actual call count to an ostream.
static void DescribeActualCallCountTo(int actual_call_count,
::std::ostream* os);
private:
std::shared_ptr<const CardinalityInterface> impl_;
};
// Creates a cardinality that allows at least n calls.
GTEST_API_ Cardinality AtLeast(int n);
// Creates a cardinality that allows at most n calls.
GTEST_API_ Cardinality AtMost(int n);
// Creates a cardinality that allows any number of calls.
GTEST_API_ Cardinality AnyNumber();
// Creates a cardinality that allows between min and max calls.
GTEST_API_ Cardinality Between(int min, int max);
// Creates a cardinality that allows exactly n calls.
GTEST_API_ Cardinality Exactly(int n);
// Creates a cardinality from its implementation.
inline Cardinality MakeCardinality(const CardinalityInterface* c) {
return Cardinality(c);
}
} // namespace testing
GTEST_DISABLE_MSC_WARNINGS_POP_() // 4251
#endif // GMOCK_INCLUDE_GMOCK_GMOCK_CARDINALITIES_H_
#ifndef THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_ // NOLINT
#define THIRD_PARTY_GOOGLETEST_GOOGLEMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_FUNCTION_MOCKER_H_ // NOLINT
// This file was GENERATED by command:
// pump.py gmock-generated-function-mockers.h.pump
// DO NOT EDIT BY HAND!!!
// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Google Mock - a framework for writing C++ mock classes.
//
// This file implements function mockers of various arities.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
#include <functional>
#include <utility>
// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Google Mock - a framework for writing C++ mock classes.
//
// This file implements the ON_CALL() and EXPECT_CALL() macros.
//
// A user can use the ON_CALL() macro to specify the default action of
// a mock method. The syntax is:
//
// ON_CALL(mock_object, Method(argument-matchers))
// .With(multi-argument-matcher)
// .WillByDefault(action);
//
// where the .With() clause is optional.
//
// A user can use the EXPECT_CALL() macro to specify an expectation on
// a mock method. The syntax is:
//
// EXPECT_CALL(mock_object, Method(argument-matchers))
// .With(multi-argument-matchers)
// .Times(cardinality)
// .InSequence(sequences)
// .After(expectations)
// .WillOnce(action)
// .WillRepeatedly(action)
// .RetiresOnSaturation();
//
// where all clauses are optional, and .InSequence()/.After()/
// .WillOnce() can appear any number of times.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_SPEC_BUILDERS_H_
#include <map>
#include <memory>
#include <set>
#include <sstream>
#include <string>
#include <utility>
#include <vector>
// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Google Mock - a framework for writing C++ mock classes.
//
// This file implements some commonly used argument matchers. More
// matchers can be defined by the user implementing the
// MatcherInterface<T> interface if necessary.
//
// See googletest/include/gtest/gtest-matchers.h for the definition of class
// Matcher, class MatcherInterface, and others.
// GOOGLETEST_CM0002 DO NOT DELETE
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_MATCHERS_H_
#include <math.h>
#include <algorithm>
#include <initializer_list>
#include <iterator>
#include <limits>
#include <memory>
#include <ostream> // NOLINT
#include <sstream>
#include <string>
#include <type_traits>
#include <utility>
#include <vector>
GTEST_DISABLE_MSC_WARNINGS_PUSH_(
4251 5046 /* class A needs to have dll-interface to be used by clients of
class B */
/* Symbol involving type with internal linkage not defined */)
namespace testing {
// To implement a matcher Foo for type T, define:
// 1. a class FooMatcherImpl that implements the
// MatcherInterface<T> interface, and
// 2. a factory function that creates a Matcher<T> object from a
// FooMatcherImpl*.
//
// The two-level delegation design makes it possible to allow a user
// to write "v" instead of "Eq(v)" where a Matcher is expected, which
// is impossible if we pass matchers by pointers. It also eases
// ownership management as Matcher objects can now be copied like
// plain values.
// A match result listener that stores the explanation in a string.
class StringMatchResultListener : public MatchResultListener {
public:
StringMatchResultListener() : MatchResultListener(&ss_) {}
// Returns the explanation accumulated so far.
std::string str() const { return ss_.str(); }
// Clears the explanation accumulated so far.
void Clear() { ss_.str(""); }
private:
::std::stringstream ss_;
GTEST_DISALLOW_COPY_AND_ASSIGN_(StringMatchResultListener);
};
// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
// and MUST NOT BE USED IN USER CODE!!!
namespace internal {
// The MatcherCastImpl class template is a helper for implementing
// MatcherCast(). We need this helper in order to partially
// specialize the implementation of MatcherCast() (C++ allows
// class/struct templates to be partially specialized, but not
// function templates.).
// This general version is used when MatcherCast()'s argument is a
// polymorphic matcher (i.e. something that can be converted to a
// Matcher but is not one yet; for example, Eq(value)) or a value (for
// example, "hello").
template <typename T, typename M>
class MatcherCastImpl {
public:
static Matcher<T> Cast(const M& polymorphic_matcher_or_value) {
// M can be a polymorphic matcher, in which case we want to use
// its conversion operator to create Matcher<T>. Or it can be a value
// that should be passed to the Matcher<T>'s constructor.
//
// We can't call Matcher<T>(polymorphic_matcher_or_value) when M is a
// polymorphic matcher because it'll be ambiguous if T has an implicit
// constructor from M (this usually happens when T has an implicit
// constructor from any type).
//
// It won't work to unconditionally implict_cast
// polymorphic_matcher_or_value to Matcher<T> because it won't trigger
// a user-defined conversion from M to T if one exists (assuming M is
// a value).
return CastImpl(
polymorphic_matcher_or_value,
BooleanConstant<
std::is_convertible<M, Matcher<T> >::value>(),
BooleanConstant<
std::is_convertible<M, T>::value>());
}
private:
template <bool Ignore>
static Matcher<T> CastImpl(const M& polymorphic_matcher_or_value,
BooleanConstant<true> /* convertible_to_matcher */,
BooleanConstant<Ignore>) {
// M is implicitly convertible to Matcher<T>, which means that either
// M is a polymorphic matcher or Matcher<T> has an implicit constructor
// from M. In both cases using the implicit conversion will produce a
// matcher.
//
// Even if T has an implicit constructor from M, it won't be called because
// creating Matcher<T> would require a chain of two user-defined conversions
// (first to create T from M and then to create Matcher<T> from T).
return polymorphic_matcher_or_value;
}
// M can't be implicitly converted to Matcher<T>, so M isn't a polymorphic
// matcher. It's a value of a type implicitly convertible to T. Use direct
// initialization to create a matcher.
static Matcher<T> CastImpl(
const M& value, BooleanConstant<false> /* convertible_to_matcher */,
BooleanConstant<true> /* convertible_to_T */) {
return Matcher<T>(ImplicitCast_<T>(value));
}
// M can't be implicitly converted to either Matcher<T> or T. Attempt to use
// polymorphic matcher Eq(value) in this case.
//
// Note that we first attempt to perform an implicit cast on the value and
// only fall back to the polymorphic Eq() matcher afterwards because the
// latter calls bool operator==(const Lhs& lhs, const Rhs& rhs) in the end
// which might be undefined even when Rhs is implicitly convertible to Lhs
// (e.g. std::pair<const int, int> vs. std::pair<int, int>).
//
// We don't define this method inline as we need the declaration of Eq().
static Matcher<T> CastImpl(
const M& value, BooleanConstant<false> /* convertible_to_matcher */,
BooleanConstant<false> /* convertible_to_T */);
};
// This more specialized version is used when MatcherCast()'s argument
// is already a Matcher. This only compiles when type T can be
// statically converted to type U.
template <typename T, typename U>
class MatcherCastImpl<T, Matcher<U> > {
public:
static Matcher<T> Cast(const Matcher<U>& source_matcher) {
return Matcher<T>(new Impl(source_matcher));
}
private:
class Impl : public MatcherInterface<T> {
public:
explicit Impl(const Matcher<U>& source_matcher)
: source_matcher_(source_matcher) {}
// We delegate the matching logic to the source matcher.
bool MatchAndExplain(T x, MatchResultListener* listener) const override {
using FromType = typename std::remove_cv<typename std::remove_pointer<
typename std::remove_reference<T>::type>::type>::type;
using ToType = typename std::remove_cv<typename std::remove_pointer<
typename std::remove_reference<U>::type>::type>::type;
// Do not allow implicitly converting base*/& to derived*/&.
static_assert(
// Do not trigger if only one of them is a pointer. That implies a
// regular conversion and not a down_cast.
(std::is_pointer<typename std::remove_reference<T>::type>::value !=
std::is_pointer<typename std::remove_reference<U>::type>::value) ||
std::is_same<FromType, ToType>::value ||
!std::is_base_of<FromType, ToType>::value,
"Can't implicitly convert from <base> to <derived>");
return source_matcher_.MatchAndExplain(static_cast<U>(x), listener);
}
void DescribeTo(::std::ostream* os) const override {
source_matcher_.DescribeTo(os);
}
void DescribeNegationTo(::std::ostream* os) const override {
source_matcher_.DescribeNegationTo(os);
}
private:
const Matcher<U> source_matcher_;
GTEST_DISALLOW_ASSIGN_(Impl);
};
};
// This even more specialized version is used for efficiently casting
// a matcher to its own type.
template <typename T>
class MatcherCastImpl<T, Matcher<T> > {
public:
static Matcher<T> Cast(const Matcher<T>& matcher) { return matcher; }
};
} // namespace internal
// In order to be safe and clear, casting between different matcher
// types is done explicitly via MatcherCast<T>(m), which takes a
// matcher m and returns a Matcher<T>. It compiles only when T can be
// statically converted to the argument type of m.
template <typename T, typename M>
inline Matcher<T> MatcherCast(const M& matcher) {
return internal::MatcherCastImpl<T, M>::Cast(matcher);
}
// Implements SafeMatcherCast().
//
// FIXME: The intermediate SafeMatcherCastImpl class was introduced as a
// workaround for a compiler bug, and can now be removed.
template <typename T>
class SafeMatcherCastImpl {
public:
// This overload handles polymorphic matchers and values only since
// monomorphic matchers are handled by the next one.
template <typename M>
static inline Matcher<T> Cast(const M& polymorphic_matcher_or_value) {
return internal::MatcherCastImpl<T, M>::Cast(polymorphic_matcher_or_value);
}
// This overload handles monomorphic matchers.
//
// In general, if type T can be implicitly converted to type U, we can
// safely convert a Matcher<U> to a Matcher<T> (i.e. Matcher is
// contravariant): just keep a copy of the original Matcher<U>, convert the
// argument from type T to U, and then pass it to the underlying Matcher<U>.
// The only exception is when U is a reference and T is not, as the
// underlying Matcher<U> may be interested in the argument's address, which
// is not preserved in the conversion from T to U.
template <typename U>
static inline Matcher<T> Cast(const Matcher<U>& matcher) {
// Enforce that T can be implicitly converted to U.
GTEST_COMPILE_ASSERT_((std::is_convertible<T, U>::value),
"T must be implicitly convertible to U");
// Enforce that we are not converting a non-reference type T to a reference
// type U.
GTEST_COMPILE_ASSERT_(
internal::is_reference<T>::value || !internal::is_reference<U>::value,
cannot_convert_non_reference_arg_to_reference);
// In case both T and U are arithmetic types, enforce that the
// conversion is not lossy.
typedef GTEST_REMOVE_REFERENCE_AND_CONST_(T) RawT;
typedef GTEST_REMOVE_REFERENCE_AND_CONST_(U) RawU;
const bool kTIsOther = GMOCK_KIND_OF_(RawT) == internal::kOther;
const bool kUIsOther = GMOCK_KIND_OF_(RawU) == internal::kOther;
GTEST_COMPILE_ASSERT_(
kTIsOther || kUIsOther ||
(internal::LosslessArithmeticConvertible<RawT, RawU>::value),
conversion_of_arithmetic_types_must_be_lossless);
return MatcherCast<T>(matcher);
}
};
template <typename T, typename M>
inline Matcher<T> SafeMatcherCast(const M& polymorphic_matcher) {
return SafeMatcherCastImpl<T>::Cast(polymorphic_matcher);
}
// A<T>() returns a matcher that matches any value of type T.
template <typename T>
Matcher<T> A();
// Anything inside the 'internal' namespace IS INTERNAL IMPLEMENTATION
// and MUST NOT BE USED IN USER CODE!!!
namespace internal {
// If the explanation is not empty, prints it to the ostream.
inline void PrintIfNotEmpty(const std::string& explanation,
::std::ostream* os) {
if (explanation != "" && os != nullptr) {
*os << ", " << explanation;
}
}
// Returns true if the given type name is easy to read by a human.
// This is used to decide whether printing the type of a value might
// be helpful.
inline bool IsReadableTypeName(const std::string& type_name) {
// We consider a type name readable if it's short or doesn't contain
// a template or function type.
return (type_name.length() <= 20 ||
type_name.find_first_of("<(") == std::string::npos);
}
// Matches the value against the given matcher, prints the value and explains
// the match result to the listener. Returns the match result.
// 'listener' must not be NULL.
// Value cannot be passed by const reference, because some matchers take a
// non-const argument.
template <typename Value, typename T>
bool MatchPrintAndExplain(Value& value, const Matcher<T>& matcher,
MatchResultListener* listener) {
if (!listener->IsInterested()) {
// If the listener is not interested, we do not need to construct the
// inner explanation.
return matcher.Matches(value);
}
StringMatchResultListener inner_listener;
const bool match = matcher.MatchAndExplain(value, &inner_listener);
UniversalPrint(value, listener->stream());
#if GTEST_HAS_RTTI
const std::string& type_name = GetTypeName<Value>();
if (IsReadableTypeName(type_name))
*listener->stream() << " (of type " << type_name << ")";
#endif
PrintIfNotEmpty(inner_listener.str(), listener->stream());
return match;
}
// An internal helper class for doing compile-time loop on a tuple's
// fields.
template <size_t N>
class TuplePrefix {
public:
// TuplePrefix<N>::Matches(matcher_tuple, value_tuple) returns true
// iff the first N fields of matcher_tuple matches the first N
// fields of value_tuple, respectively.
template <typename MatcherTuple, typename ValueTuple>
static bool Matches(const MatcherTuple& matcher_tuple,
const ValueTuple& value_tuple) {
return TuplePrefix<N - 1>::Matches(matcher_tuple, value_tuple) &&
std::get<N - 1>(matcher_tuple).Matches(std::get<N - 1>(value_tuple));
}
// TuplePrefix<N>::ExplainMatchFailuresTo(matchers, values, os)
// describes failures in matching the first N fields of matchers
// against the first N fields of values. If there is no failure,
// nothing will be streamed to os.
template <typename MatcherTuple, typename ValueTuple>
static void ExplainMatchFailuresTo(const MatcherTuple& matchers,
const ValueTuple& values,
::std::ostream* os) {
// First, describes failures in the first N - 1 fields.
TuplePrefix<N - 1>::ExplainMatchFailuresTo(matchers, values, os);
// Then describes the failure (if any) in the (N - 1)-th (0-based)
// field.
typename std::tuple_element<N - 1, MatcherTuple>::type matcher =
std::get<N - 1>(matchers);
typedef typename std::tuple_element<N - 1, ValueTuple>::type Value;
const Value& value = std::get<N - 1>(values);
StringMatchResultListener listener;
if (!matcher.MatchAndExplain(value, &listener)) {
*os << " Expected arg #" << N - 1 << ": ";
std::get<N - 1>(matchers).DescribeTo(os);
*os << "\n Actual: ";
// We remove the reference in type Value to prevent the
// universal printer from printing the address of value, which
// isn't interesting to the user most of the time. The
// matcher's MatchAndExplain() method handles the case when
// the address is interesting.
internal::UniversalPrint(value, os);
PrintIfNotEmpty(listener.str(), os);
*os << "\n";
}
}
};
// The base case.
template <>
class TuplePrefix<0> {
public:
template <typename MatcherTuple, typename ValueTuple>
static bool Matches(const MatcherTuple& /* matcher_tuple */,
const ValueTuple& /* value_tuple */) {
return true;
}
template <typename MatcherTuple, typename ValueTuple>
static void ExplainMatchFailuresTo(const MatcherTuple& /* matchers */,
const ValueTuple& /* values */,
::std::ostream* /* os */) {}
};
// TupleMatches(matcher_tuple, value_tuple) returns true iff all
// matchers in matcher_tuple match the corresponding fields in
// value_tuple. It is a compiler error if matcher_tuple and
// value_tuple have different number of fields or incompatible field
// types.
template <typename MatcherTuple, typename ValueTuple>
bool TupleMatches(const MatcherTuple& matcher_tuple,
const ValueTuple& value_tuple) {
// Makes sure that matcher_tuple and value_tuple have the same
// number of fields.
GTEST_COMPILE_ASSERT_(std::tuple_size<MatcherTuple>::value ==
std::tuple_size<ValueTuple>::value,
matcher_and_value_have_different_numbers_of_fields);
return TuplePrefix<std::tuple_size<ValueTuple>::value>::Matches(matcher_tuple,
value_tuple);
}
// Describes failures in matching matchers against values. If there
// is no failure, nothing will be streamed to os.
template <typename MatcherTuple, typename ValueTuple>
void ExplainMatchFailureTupleTo(const MatcherTuple& matchers,
const ValueTuple& values,
::std::ostream* os) {
TuplePrefix<std::tuple_size<MatcherTuple>::value>::ExplainMatchFailuresTo(
matchers, values, os);
}
// TransformTupleValues and its helper.
//
// TransformTupleValuesHelper hides the internal machinery that
// TransformTupleValues uses to implement a tuple traversal.
template <typename Tuple, typename Func, typename OutIter>
class TransformTupleValuesHelper {
private:
typedef ::std::tuple_size<Tuple> TupleSize;
public:
// For each member of tuple 't', taken in order, evaluates '*out++ = f(t)'.
// Returns the final value of 'out' in case the caller needs it.
static OutIter Run(Func f, const Tuple& t, OutIter out) {
return IterateOverTuple<Tuple, TupleSize::value>()(f, t, out);
}
private:
template <typename Tup, size_t kRemainingSize>
struct IterateOverTuple {
OutIter operator() (Func f, const Tup& t, OutIter out) const {
*out++ = f(::std::get<TupleSize::value - kRemainingSize>(t));
return IterateOverTuple<Tup, kRemainingSize - 1>()(f, t, out);
}
};
template <typename Tup>
struct IterateOverTuple<Tup, 0> {
OutIter operator() (Func /* f */, const Tup& /* t */, OutIter out) const {
return out;
}
};
};
// Successively invokes 'f(element)' on each element of the tuple 't',
// appending each result to the 'out' iterator. Returns the final value
// of 'out'.
template <typename Tuple, typename Func, typename OutIter>
OutIter TransformTupleValues(Func f, const Tuple& t, OutIter out) {
return TransformTupleValuesHelper<Tuple, Func, OutIter>::Run(f, t, out);
}
// Implements A<T>().
template <typename T>
class AnyMatcherImpl : public MatcherInterface<const T&> {
public:
bool MatchAndExplain(const T& /* x */,
MatchResultListener* /* listener */) const override {
return true;
}
void DescribeTo(::std::ostream* os) const override { *os << "is anything"; }
void DescribeNegationTo(::std::ostream* os) const override {
// This is mostly for completeness' safe, as it's not very useful
// to write Not(A<bool>()). However we cannot completely rule out
// such a possibility, and it doesn't hurt to be prepared.
*os << "never matches";
}
};
// Implements _, a matcher that matches any value of any
// type. This is a polymorphic matcher, so we need a template type
// conversion operator to make it appearing as a Matcher<T> for any
// type T.
class AnythingMatcher {
public:
template <typename T>
operator Matcher<T>() const { return A<T>(); }
};
// Implements the polymorphic IsNull() matcher, which matches any raw or smart
// pointer that is NULL.
class IsNullMatcher {
public:
template <typename Pointer>
bool MatchAndExplain(const Pointer& p,
MatchResultListener* /* listener */) const {
return p == nullptr;
}
void DescribeTo(::std::ostream* os) const { *os << "is NULL"; }
void DescribeNegationTo(::std::ostream* os) const {
*os << "isn't NULL";
}
};
// Implements the polymorphic NotNull() matcher, which matches any raw or smart
// pointer that is not NULL.
class NotNullMatcher {
public:
template <typename Pointer>
bool MatchAndExplain(const Pointer& p,
MatchResultListener* /* listener */) const {
return p != nullptr;
}
void DescribeTo(::std::ostream* os) const { *os << "isn't NULL"; }
void DescribeNegationTo(::std::ostream* os) const {
*os << "is NULL";
}
};
// Ref(variable) matches any argument that is a reference to
// 'variable'. This matcher is polymorphic as it can match any
// super type of the type of 'variable'.
//
// The RefMatcher template class implements Ref(variable). It can
// only be instantiated with a reference type. This prevents a user
// from mistakenly using Ref(x) to match a non-reference function
// argument. For example, the following will righteously cause a
// compiler error:
//
// int n;
// Matcher<int> m1 = Ref(n); // This won't compile.
// Matcher<int&> m2 = Ref(n); // This will compile.
template <typename T>
class RefMatcher;
template <typename T>
class RefMatcher<T&> {
// Google Mock is a generic framework and thus needs to support
// mocking any function types, including those that take non-const
// reference arguments. Therefore the template parameter T (and
// Super below) can be instantiated to either a const type or a
// non-const type.
public:
// RefMatcher() takes a T& instead of const T&, as we want the
// compiler to catch using Ref(const_value) as a matcher for a
// non-const reference.
explicit RefMatcher(T& x) : object_(x) {} // NOLINT
template <typename Super>
operator Matcher<Super&>() const {
// By passing object_ (type T&) to Impl(), which expects a Super&,
// we make sure that Super is a super type of T. In particular,
// this catches using Ref(const_value) as a matcher for a
// non-const reference, as you cannot implicitly convert a const
// reference to a non-const reference.
return MakeMatcher(new Impl<Super>(object_));
}
private:
template <typename Super>
class Impl : public MatcherInterface<Super&> {
public:
explicit Impl(Super& x) : object_(x) {} // NOLINT
// MatchAndExplain() takes a Super& (as opposed to const Super&)
// in order to match the interface MatcherInterface<Super&>.
bool MatchAndExplain(Super& x,
MatchResultListener* listener) const override {
*listener << "which is located @" << static_cast<const void*>(&x);
return &x == &object_;
}
void DescribeTo(::std::ostream* os) const override {
*os << "references the variable ";
UniversalPrinter<Super&>::Print(object_, os);
}
void DescribeNegationTo(::std::ostream* os) const override {
*os << "does not reference the variable ";
UniversalPrinter<Super&>::Print(object_, os);
}
private: