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Diffstat (limited to 'test_vec.cpp')
| -rw-r--r-- | test_vec.cpp | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/test_vec.cpp b/test_vec.cpp new file mode 100644 index 0000000..1b765aa --- /dev/null +++ b/test_vec.cpp @@ -0,0 +1,77 @@ +// +// Created by Keuin on 2022/4/11. +// + +#include <gtest/gtest.h> + +#include "vec.h" + +TEST(Vec, VecAdd) { + vec3i a{1, 1, 1}, b{2, 2, 2}, c{3, 3, 3}; + ASSERT_EQ(a + b, c); + + vec3d d{1.1, 2.2, 3.3}, e{4.4, 5.5, 6.6}, f{5.5, 7.7, 9.9}; + ASSERT_EQ(d + e, f); +} + +TEST(Vec, VecMin) { + vec3i a{1, 1, 1}, b{2, 2, 2}, c{-1, -1, -1}; + ASSERT_EQ(a - b, c); + ASSERT_EQ(-a, c); + + vec3d d{1.1, 2.2, 3.3}, e{-4.4, -5.5, -6.6}, f{5.5, 7.7, 9.9}; + ASSERT_EQ(d - e, f); + ASSERT_EQ(d + (-e), f); +} + +TEST(Vec, CrossProduct) { + vec3i a{1, 1, 1}, b{2, 2, 2}, c{3, 4, 5}, d{6, 7, 8}, e{-3, -6, -3}; + ASSERT_EQ(cross(a, b), vec3i{}); + ASSERT_EQ(a.cross(b), vec3i{}); + ASSERT_EQ(cross(c, d), e); + ASSERT_EQ(c.cross(d), e); + + vec3d f{3, 4, 5}, g{6, 7, 8}, h{-3, -6, -3}; + ASSERT_EQ(cross(f, g), h); + ASSERT_EQ(f.cross(g), h); +} + +TEST(Vec, DotProduct) { + vec3i c{3, 4, 5}, d{6, 7, 8}; + int e = 18 + 28 + 40; + ASSERT_EQ(dot(c, d), e); + ASSERT_EQ(c.dot(d), e); + + vec3d f{3, 4, 5}, g{6, 7, 8}; + ASSERT_EQ(dot(f, g), e); + ASSERT_EQ(f.dot(g), e); +} + +TEST(Vec, MulByScalar) { + vec3i a{1, 1, 1}, b{2, 2, 2}; + vec3d c{7, 14, 21}, d{1, 2, 3}; + ASSERT_EQ(a * 2, b); + ASSERT_EQ(a / 0.5, b); + ASSERT_EQ(2 * a, b); + ASSERT_EQ(c * (1.0 / 7), d); + ASSERT_EQ(c / 7, d); + ASSERT_EQ(c / 7.0, d); +} + +TEST(Vec, Norm) { + vec3d a{1, 1, 1}, b{2, 2, 2}; + ASSERT_EQ(a.norm(), sqrt(3)); + ASSERT_EQ(b.norm(), sqrt(12)); +} + +TEST(Vec, UnitVec) { + vec3d a{1, 2, 2}, b{1.0 / 3, 2.0 / 3, 2.0 / 3}; + ASSERT_EQ(a.unit_vec(), b); +} + +TEST(Vec, Mod2) { + vec3i a{1, 2, 3}; + vec3d b{2.5, 3, 1.2}; + ASSERT_EQ(a.mod2(), 14); + ASSERT_LE(abs(b.mod2() - (2.5 * 2.5 + 3 * 3 + 1.2 * 1.2)), 1e-10); +}
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