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Add unittests for calculation functions for vectors

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Mario Hüttel 2020-04-19 00:40:17 +02:00
parent b784f28d4c
commit d29109e516
1 changed files with 117 additions and 0 deletions
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117
test/geometric/vector-operations.cpp
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@ -41,3 +41,120 @@ TEST_CASE("geometric/vector-operations/vector_2d_calculate_angle_between", "[GEO
angle = vector_2d_calculate_angle_between(&a, &b);
REQUIRE(angle == Approx(90.0 / 180.0 * M_PI));
}
TEST_CASE("geometric/vector-operations/vector_2d_subtract", "[GEOMETRIC]")
{
struct vector_2d res;
struct vector_2d a;
struct vector_2d b;
a.x = 1;
a.y = 2;
b.x = 2;
b.y = 6;
vector_2d_subtract(&res, &a, &b);
REQUIRE(res.x == Approx(a.x - b.x));
REQUIRE(res.y == Approx(a.y - b.y));
}
TEST_CASE("geometric/vector-operations/vector_2d_abs", "[GEOMETRIC]")
{
struct vector_2d c;
struct vector_2d a;
struct vector_2d b;
double a_len, b_len, c_len;
a.x = 1;
a.y = 0;
b.x = 0;
b.y = 2;
c.x = 3;
c.y = 4;
a_len = vector_2d_abs(&a);
b_len = vector_2d_abs(&b);
c_len = vector_2d_abs(&c);
REQUIRE(a_len == Approx(1.0));
REQUIRE(b_len == Approx(2.0));
REQUIRE(c_len == Approx(5.0));
}
TEST_CASE("geometric/vector-operations/vector_2d_scalar_multipy", "[GEOMETRIC]")
{
struct vector_2d c;
struct vector_2d a;
struct vector_2d b;
double mult;
a.x = 1;
a.y = 0;
b.x = 0;
b.y = 2;
mult = vector_2d_scalar_multipy(&a, &b);
REQUIRE(mult == Approx(0.0));
a.x = 1;
a.y = 1;
b.x = 1;
b.y = 1;
mult = vector_2d_scalar_multipy(&a, &b);
REQUIRE(mult == Approx(2.0));
}
TEST_CASE("geometric/vector-operations/vector_2d_normalize", "[GEOMETRIC]")
{
struct vector_2d a;
a.x = 1;
a.y = 0;
vector_2d_normalize(&a);
REQUIRE(a.x == Approx(1.0));
REQUIRE(a.y == Approx(0.0));
a.x = 1;
a.y = -1;
vector_2d_normalize(&a);
REQUIRE(a.x == Approx(1.0/sqrt(2)));
REQUIRE(a.y == Approx(-1.0/sqrt(2)));
}
TEST_CASE("geometric/vector-operations/vector_2d_rotate", "[GEOMETRIC]")
{
struct vector_2d a;
a.x = 1;
a.y = 0;
vector_2d_rotate(&a, M_PI/2);
REQUIRE(a.x == Approx(0.0).scale(0.001));
REQUIRE(a.y == Approx(1.0));
a.x = 0;
a.y = 1;
vector_2d_rotate(&a, -M_PI/2);
vector_2d_rotate(&a, M_PI);
REQUIRE(a.x == Approx(-1.0));
REQUIRE(a.y == Approx(0.0).scale(0.001));
}
TEST_CASE("geometric/vector-operations/vector_2d_scale", "[GEOMETRIC]")
{
struct vector_2d a;
a.x = 1;
a.y = 0;
vector_2d_scale(&a, 2.0);
REQUIRE(a.x == Approx(2.0));
REQUIRE(a.y == Approx(0.0));
a.x = 1;
a.y = -3;
vector_2d_scale(&a, 0.5);
REQUIRE(a.x == Approx(0.5));
REQUIRE(a.y == Approx(-1.5));
}