internal/ceres/expression_test.h

// Ceres Solver - A fast non-linear least squares minimizer
// Copyright 2019 Google Inc. All rights reserved.
// http://code.google.com/p/ceres-solver/
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// Author: darius.rueckert@fau.de (Darius Rueckert)
//

#ifndef CERES_PUBLIC_EXPRESSION_TEST_H_
#define CERES_PUBLIC_EXPRESSION_TEST_H_

#include "ceres/internal/expression_graph.h"
#include "ceres/internal/expression_ref.h"

#include "gtest/gtest.h"

// This file adds a few helper functions to test Expressions and
// ExpressionGraphs for correctness.
namespace ceres {
namespace internal {

inline void TestExpression(const Expression& expr,
                           ExpressionType type,
                           ExpressionId lhs_id,
                           double value,
                           const std::string& name,
                           const std::vector<ExpressionId>& arguments) {
  EXPECT_EQ(static_cast<int>(expr.type()), static_cast<int>(type));
  EXPECT_EQ(expr.lhs_id(), lhs_id);
  EXPECT_EQ(expr.value(), value);
  EXPECT_EQ(expr.name(), name);
  EXPECT_EQ(expr.arguments(), arguments);
}

#define TE(_id, _type, _lhs_id, _value, _name, ...) \
  TestExpression(graph.ExpressionForId(_id),        \
                 ExpressionType::_type,             \
                 _lhs_id,                           \
                 _value,                            \
                 _name,                             \
                 {__VA_ARGS__})

}  // namespace internal
}  // namespace ceres

#endif