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Diffstat (limited to 'src/math/test/vector_test.cpp')
-rw-r--r-- | src/math/test/vector_test.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/src/math/test/vector_test.cpp b/src/math/test/vector_test.cpp new file mode 100644 index 0000000..2f4dd09 --- /dev/null +++ b/src/math/test/vector_test.cpp @@ -0,0 +1,126 @@ +// * This file is part of the COLOBOT source code +// * Copyright (C) 2012, Polish Portal of Colobot (PPC) +// * +// * This program is free software: you can redistribute it and/or modify +// * it under the terms of the GNU General Public License as published by +// * the Free Software Foundation, either version 3 of the License, or +// * (at your option) any later version. +// * +// * This program is distributed in the hope that it will be useful, +// * but WITHOUT ANY WARRANTY; without even the implied warranty of +// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// * GNU General Public License for more details. +// * +// * You should have received a copy of the GNU General Public License +// * along with this program. If not, see http://www.gnu.org/licenses/. + +// math/test/vector_test.cpp + +/* Unit tests for Vector struct + + Test data was randomly generated and the expected results + calculated using GNU Octave. + + */ + +#include "../func.h" +#include "../vector.h" + +#include <cstdio> + +using namespace std; + +const float TEST_TOLERANCE = 1e-6; + +int TestLength() +{ + Math::Vector vec(-1.288447945923275, 0.681452565308134, -0.633761098985957); + const float expectedLength = 1.58938001708428; + + if (! Math::IsEqual(vec.Length(), expectedLength, TEST_TOLERANCE) ) + { + fprintf(stderr, "Length mismatch!\n"); + return __LINE__; + } + + return 0; +} + +int TestNormalize() +{ + Math::Vector vec(1.848877241804398, -0.157262961268577, -1.963031403332377); + const Math::Vector expectedNormalized(0.6844609421393856, -0.0582193085618106, -0.7267212194481797); + + vec.Normalize(); + + if (! Math::VectorsEqual(vec, expectedNormalized, TEST_TOLERANCE)) + { + fprintf(stderr, "Normalize mismatch!\n"); + return __LINE__; + } + + return 0; +} + +int TestDot() +{ + Math::Vector vecA(0.8202190530968309, 0.0130926060162780, 0.2411914183883510); + Math::Vector vecB(-0.0524083951404069, 1.5564932716738220, -0.8971342631500536); + + float expectedDot = -0.238988896477326; + + if (! Math::IsEqual(Math::DotProduct(vecA, vecB), expectedDot, TEST_TOLERANCE) ) + { + fprintf(stderr, "Dot product mismatch!\n"); + return __LINE__; + } + + return 0; +} + +int TestCross() +{ + Math::Vector vecA(1.37380499798567, 1.18054518384682, 1.95166361293121); + Math::Vector vecB(0.891657855926886, 0.447591335394532, -0.901604070087823); + + Math::Vector expectedCross(-1.937932065431669, 2.978844370287636, -0.437739173833581); + Math::Vector expectedReverseCross = -expectedCross; + + if (! Math::VectorsEqual(vecA.CrossMultiply(vecB), expectedCross, TEST_TOLERANCE) ) + { + fprintf(stderr, "Cross product mismatch!\n"); + return __LINE__; + } + + if (! Math::VectorsEqual(vecB.CrossMultiply(vecA), expectedReverseCross, TEST_TOLERANCE) ) + { + fprintf(stderr, "Reverse cross product mismatch!\n"); + return __LINE__; + } + + return 0; +} + +int main() +{ + // Functions to test + int (*TESTS[])() = + { + TestNormalize, + TestDot, + TestCross + }; + const int TESTS_SIZE = sizeof(TESTS) / sizeof(*TESTS); + + int result = 0; + for (int i = 0; i < TESTS_SIZE; ++i) + { + result = TESTS[i](); + if (result != 0) + return result; + } + + fprintf(stderr, "All tests successful\n"); + + return 0; +} |