/**************************************************************************/
/*  test_vector4i.cpp                                                     */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#include "tests/test_macros.h"

TEST_FORCE_LINK(test_vector4i)

#include "core/math/vector4i.h"

namespace TestVector4i {

TEST_CASE("[Vector4i] Constructor methods") {
	constexpr Vector4i vector_empty = Vector4i();
	constexpr Vector4i vector_zero = Vector4i(0, 0, 0, 0);
	static_assert(
			vector_empty == vector_zero,
			"Vector4i Constructor with no inputs should return a zero Vector4i.");
}

TEST_CASE("[Vector4i] Axis methods") {
	Vector4i vector = Vector4i(1, 2, 3, 4);
	CHECK_MESSAGE(
			vector.max_axis_index() == Vector4i::Axis::AXIS_W,
			"Vector4i max_axis_index should work as expected.");
	CHECK_MESSAGE(
			vector.min_axis_index() == Vector4i::Axis::AXIS_X,
			"Vector4i min_axis_index should work as expected.");
	CHECK_MESSAGE(
			vector[vector.max_axis_index()] == 4,
			"Vector4i array operator should work as expected.");
	CHECK_MESSAGE(
			vector[vector.min_axis_index()] == 1,
			"Vector4i array operator should work as expected.");

	vector[Vector4i::Axis::AXIS_Y] = 5;
	CHECK_MESSAGE(
			vector[Vector4i::Axis::AXIS_Y] == 5,
			"Vector4i array operator setter should work as expected.");
}

TEST_CASE("[Vector4i] Clamp method") {
	constexpr Vector4i vector = Vector4i(10, 10, 10, 10);
	CHECK_MESSAGE(
			Vector4i(-5, 5, 15, INT_MAX).clamp(Vector4i(), vector) == Vector4i(0, 5, 10, 10),
			"Vector4i clamp should work as expected.");
	CHECK_MESSAGE(
			vector.clamp(Vector4i(0, 10, 15, -10), Vector4i(5, 10, 20, -5)) == Vector4i(5, 10, 15, -5),
			"Vector4i clamp should work as expected.");
}

TEST_CASE("[Vector4i] Length methods") {
	constexpr Vector4i vector1 = Vector4i(10, 10, 10, 10);
	constexpr Vector4i vector2 = Vector4i(20, 30, 40, 50);
	CHECK_MESSAGE(
			vector1.length_squared() == 400,
			"Vector4i length_squared should work as expected and return exact result.");
	CHECK_MESSAGE(
			vector1.length() == doctest::Approx(20),
			"Vector4i length should work as expected.");
	CHECK_MESSAGE(
			vector2.length_squared() == 5400,
			"Vector4i length_squared should work as expected and return exact result.");
	CHECK_MESSAGE(
			vector2.length() == doctest::Approx(73.4846922835),
			"Vector4i length should work as expected.");
	CHECK_MESSAGE(
			vector1.distance_squared_to(vector2) == 3000,
			"Vector4i distance_squared_to should work as expected.");
	CHECK_MESSAGE(
			vector1.distance_to(vector2) == doctest::Approx(54.772255750517),
			"Vector4i distance_to should work as expected.");
}

TEST_CASE("[Vector4i] Operators") {
	constexpr Vector4i vector1 = Vector4i(4, 5, 9, 2);
	constexpr Vector4i vector2 = Vector4i(1, 2, 3, 4);

	static_assert(
			-vector1 == Vector4i(-4, -5, -9, -2),
			"Vector4i change of sign should work as expected.");
	static_assert(
			(vector1 + vector2) == Vector4i(5, 7, 12, 6),
			"Vector4i addition with integers should give exact results.");
	static_assert(
			(vector1 - vector2) == Vector4i(3, 3, 6, -2),
			"Vector4i subtraction with integers should give exact results.");
	static_assert(
			(vector1 * vector2) == Vector4i(4, 10, 27, 8),
			"Vector4i multiplication with integers should give exact results.");
	static_assert(
			(vector1 / vector2) == Vector4i(4, 2, 3, 0),
			"Vector4i division with integers should give exact results.");

	static_assert(
			(vector1 * 2) == Vector4i(8, 10, 18, 4),
			"Vector4i multiplication with integers should give exact results.");
	static_assert(
			(vector1 / 2) == Vector4i(2, 2, 4, 1),
			"Vector4i division with integers should give exact results.");

	CHECK_MESSAGE(
			((Vector4)vector1) == Vector4(4, 5, 9, 2),
			"Vector4i cast to Vector4 should work as expected.");
	CHECK_MESSAGE(
			((Vector4)vector2) == Vector4(1, 2, 3, 4),
			"Vector4i cast to Vector4 should work as expected.");
	CHECK_MESSAGE(
			Vector4i(Vector4(1.1, 2.9, 3.9, 100.5)) == Vector4i(1, 2, 3, 100),
			"Vector4i constructed from Vector4 should work as expected.");
}

TEST_CASE("[Vector3i] Other methods") {
	constexpr Vector4i vector = Vector4i(1, 3, -7, 13);

	CHECK_MESSAGE(
			vector.min(Vector4i(3, 2, 5, 8)) == Vector4i(1, 2, -7, 8),
			"Vector4i min should return expected value.");

	CHECK_MESSAGE(
			vector.max(Vector4i(5, 2, 4, 8)) == Vector4i(5, 3, 4, 13),
			"Vector4i max should return expected value.");

	CHECK_MESSAGE(
			vector.snapped(Vector4i(4, 2, 5, 8)) == Vector4i(0, 4, -5, 16),
			"Vector4i snapped should work as expected.");
}

TEST_CASE("[Vector4i] Abs and sign methods") {
	constexpr Vector4i vector1 = Vector4i(1, 3, 5, 7);
	constexpr Vector4i vector2 = Vector4i(1, -3, -5, 7);
	CHECK_MESSAGE(
			vector1.abs() == vector1,
			"Vector4i abs should work as expected.");
	CHECK_MESSAGE(
			vector2.abs() == vector1,
			"Vector4i abs should work as expected.");

	CHECK_MESSAGE(
			vector1.sign() == Vector4i(1, 1, 1, 1),
			"Vector4i sign should work as expected.");
	CHECK_MESSAGE(
			vector2.sign() == Vector4i(1, -1, -1, 1),
			"Vector4i sign should work as expected.");
}

} // namespace TestVector4i
