| // Ceres Solver - A fast non-linear least squares minimizer |
| // Copyright 2015 Google Inc. All rights reserved. |
| // http://ceres-solver.org/ |
| // |
| // 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. |
| // |
| // Author: dgossow@google.com (David Gossow) |
| // |
| // This file contains tests for the IsClose function. |
| |
| #include "ceres/is_close.h" |
| |
| #include "gtest/gtest.h" |
| |
| namespace ceres { |
| namespace internal { |
| |
| const double kTolerance = 1e-9; |
| |
| TEST(IsClose, BothParametersPositive) { |
| double relative_error = -1; |
| double absolute_error = -1; |
| |
| // Test cases where both values are positive. |
| EXPECT_TRUE(IsClose(9.9, 10.0, 0.011, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.01, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.1, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_TRUE(IsClose(10.0, 9.9, 0.011, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.01, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.1, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| |
| EXPECT_FALSE(IsClose(9.9, 10.0, 0.009, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.01, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.1, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_FALSE(IsClose(10.0, 9.9, 0.009, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.01, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.1, kTolerance); |
| } |
| |
| TEST(IsClose, BothParametersNegative) { |
| double relative_error = -1; |
| double absolute_error = -1; |
| |
| // Test cases where both values are negative. |
| EXPECT_TRUE(IsClose(-9.9, -10.0, 0.011, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.01, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.1, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_TRUE(IsClose(-10.0, -9.9, 0.011, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.01, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.1, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| |
| EXPECT_FALSE(IsClose(-9.9, -10.0, 0.009, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.01, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.1, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_FALSE(IsClose(-10.0, -9.9, 0.009, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.01, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.1, kTolerance); |
| } |
| |
| TEST(IsClose, ParametersHaveMixedSigns) { |
| double relative_error = -1; |
| double absolute_error = -1; |
| |
| // Test cases with mixed signs. |
| EXPECT_FALSE(IsClose(-0.1, 0.1, 1.99, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 2.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.2, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_TRUE(IsClose(-0.1, 0.1, 2.01, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 2.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.2, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_FALSE(IsClose(0.1, -0.1, 1.99, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 2.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.2, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_TRUE(IsClose(0.1, -0.1, 2.01, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 2.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.2, kTolerance); |
| } |
| |
| TEST(IsClose, OneParameterZero) { |
| double relative_error = -1; |
| double absolute_error = -1; |
| |
| // Test cases where one of the values is zero. |
| EXPECT_TRUE(IsClose(0.0, 10.0, 10.1, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 10.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 10.0, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_TRUE(IsClose(10.0, 0.0, 10.1, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 10.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 10.0, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_TRUE(IsClose(0.0, -10.0, 10.1, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 10.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 10.0, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_TRUE(IsClose(-10.0, 0.0, 10.1, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 10.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 10.0, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| |
| EXPECT_FALSE(IsClose(0, 10.0, 9.9, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 10.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 10.0, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_FALSE(IsClose(10.0, 0.0, 9.9, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 10.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 10.0, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_FALSE(IsClose(0, -10.0, 9.9, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 10.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 10.0, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_FALSE(IsClose(-10.0, 0.0, 9.9, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 10.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 10.0, kTolerance); |
| } |
| |
| TEST(IsClose, BothParametersZero) { |
| double relative_error = -1; |
| double absolute_error = -1; |
| EXPECT_TRUE(IsClose(0.0, 0.0, 0.1, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.0, kTolerance); |
| relative_error = -1; |
| absolute_error = -1; |
| EXPECT_FALSE(IsClose(0.0, 0.0, 0.0, &relative_error, &absolute_error)); |
| EXPECT_NEAR(relative_error, 0.0, kTolerance); |
| EXPECT_NEAR(absolute_error, 0.0, kTolerance); |
| } |
| } // namespace internal |
| } // namespace ceres |