test_vector2i.cpp

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/*  test_vector2i.cpp                                                     */
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#include "tests/test_macros.h"

TEST_FORCE_LINK(test_vector2i)

#include "core/math/vector2.h"
#include "core/math/vector2i.h"

namespace TestVector2i {

TEST_CASE("[Vector2i] Constructor methods") {
	constexpr Vector2i vector_empty = Vector2i();
	constexpr Vector2i vector_zero = Vector2i(0, 0);
	static_assert(
			vector_empty == vector_zero,
			"Vector2i Constructor with no inputs should return a zero Vector2i.");
}

TEST_CASE("[Vector2i] Axis methods") {
	Vector2i vector = Vector2i(2, 3);
	CHECK_MESSAGE(
			vector.max_axis_index() == Vector2i::Axis::AXIS_Y,
			"Vector2i max_axis_index should work as expected.");
	CHECK_MESSAGE(
			vector.min_axis_index() == Vector2i::Axis::AXIS_X,
			"Vector2i min_axis_index should work as expected.");
	CHECK_MESSAGE(
			vector[vector.min_axis_index()] == 2,
			"Vector2i array operator should work as expected.");
	vector[Vector2i::Axis::AXIS_Y] = 5;
	CHECK_MESSAGE(
			vector[Vector2i::Axis::AXIS_Y] == 5,
			"Vector2i array operator setter should work as expected.");
}

TEST_CASE("[Vector2i] Clamp method") {
	constexpr Vector2i vector = Vector2i(10, 10);
	CHECK_MESSAGE(
			Vector2i(-5, 15).clamp(Vector2i(), vector) == Vector2i(0, 10),
			"Vector2i clamp should work as expected.");
	CHECK_MESSAGE(
			vector.clamp(Vector2i(0, 15), Vector2i(5, 20)) == Vector2i(5, 15),
			"Vector2i clamp should work as expected.");
}

TEST_CASE("[Vector2i] Length methods") {
	constexpr Vector2i vector1 = Vector2i(10, 10);
	constexpr Vector2i vector2 = Vector2i(20, 30);
	CHECK_MESSAGE(
			vector1.length_squared() == 200,
			"Vector2i length_squared should work as expected and return exact result.");
	CHECK_MESSAGE(
			vector1.length() == doctest::Approx(10 * Math::SQRT2),
			"Vector2i length should work as expected.");
	CHECK_MESSAGE(
			vector2.length_squared() == 1300,
			"Vector2i length_squared should work as expected and return exact result.");
	CHECK_MESSAGE(
			vector2.length() == doctest::Approx(36.05551275463989293119),
			"Vector2i length should work as expected.");
	CHECK_MESSAGE(
			vector1.distance_squared_to(vector2) == 500,
			"Vector2i distance_squared_to should work as expected and return exact result.");
	CHECK_MESSAGE(
			vector1.distance_to(vector2) == doctest::Approx(22.36067977499789696409),
			"Vector2i distance_to should work as expected.");
}

TEST_CASE("[Vector2i] Operators") {
	constexpr Vector2i vector1 = Vector2i(5, 9);
	constexpr Vector2i vector2 = Vector2i(2, 3);

	static_assert(
			(vector1 + vector2) == Vector2i(7, 12),
			"Vector2i addition with integers should give exact results.");
	static_assert(
			(vector1 - vector2) == Vector2i(3, 6),
			"Vector2i subtraction with integers should give exact results.");
	static_assert(
			(vector1 * vector2) == Vector2i(10, 27),
			"Vector2i multiplication with integers should give exact results.");
	static_assert(
			(vector1 / vector2) == Vector2i(2, 3),
			"Vector2i division with integers should give exact results.");

	static_assert(
			(vector1 * 2) == Vector2i(10, 18),
			"Vector2i multiplication with integers should give exact results.");
	static_assert(
			(vector1 / 2) == Vector2i(2, 4),
			"Vector2i division with integers should give exact results.");

	CHECK_MESSAGE(
			((Vector2)vector1) == Vector2(5, 9),
			"Vector2i cast to Vector2 should work as expected.");
	CHECK_MESSAGE(
			((Vector2)vector2) == Vector2(2, 3),
			"Vector2i cast to Vector2 should work as expected.");
	CHECK_MESSAGE(
			Vector2i(Vector2(1.1, 2.9)) == Vector2i(1, 2),
			"Vector2i constructed from Vector2 should work as expected.");
}

TEST_CASE("[Vector2i] Other methods") {
	constexpr Vector2i vector = Vector2i(1, 3);
	CHECK_MESSAGE(
			vector.aspect() == doctest::Approx((real_t)1.0 / (real_t)3.0),
			"Vector2i aspect should work as expected.");

	CHECK_MESSAGE(
			vector.min(Vector2i(3, 2)) == Vector2i(1, 2),
			"Vector2i min should return expected value.");

	CHECK_MESSAGE(
			vector.max(Vector2i(5, 2)) == Vector2i(5, 3),
			"Vector2i max should return expected value.");

	CHECK_MESSAGE(
			vector.snapped(Vector2i(4, 2)) == Vector2i(0, 4),
			"Vector2i snapped should work as expected.");
}

TEST_CASE("[Vector2i] Abs and sign methods") {
	constexpr Vector2i vector1 = Vector2i(1, 3);
	constexpr Vector2i vector2 = Vector2i(1, -3);
	CHECK_MESSAGE(
			vector1.abs() == vector1,
			"Vector2i abs should work as expected.");
	CHECK_MESSAGE(
			vector2.abs() == vector1,
			"Vector2i abs should work as expected.");

	CHECK_MESSAGE(
			vector1.sign() == Vector2i(1, 1),
			"Vector2i sign should work as expected.");
	CHECK_MESSAGE(
			vector2.sign() == Vector2i(1, -1),
			"Vector2i sign should work as expected.");
}

} // namespace TestVector2i