| // Ceres Solver - A fast non-linear least squares minimizer |
| // Copyright 2015 Google Inc. All rights reserved. |
| // http://ceres-solver.org/ |
| // |
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| // 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::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 ceres::internal |