SFML/test/Graphics/Rect.cpp

#include <SFML/Graphics/Rect.hpp>
#include <SFML/System/Vector2.hpp>
#include "GraphicsUtil.hpp"

#include <doctest.h>

TEST_CASE("sf::Rect class template - [graphics]")
{
    SUBCASE("Construction")
    {
        SUBCASE("Default constructor")
        {
            sf::IntRect rectangle;
            CHECK(rectangle.left == 0);
            CHECK(rectangle.top == 0);
            CHECK(rectangle.width == 0);
            CHECK(rectangle.height == 0);
        }

        SUBCASE("(left, top, width, height) constructor")
        {
            sf::IntRect rectangle({1, 2}, {3, 4});
            CHECK(rectangle.left == 1);
            CHECK(rectangle.top == 2);
            CHECK(rectangle.width == 3);
            CHECK(rectangle.height == 4);
        }

        SUBCASE("(Vector2, Vector2) constructor")
        {
            sf::Vector2i position(1, 2);
            sf::Vector2i dimension(3, 4);
            sf::IntRect rectangle(position, dimension);

            CHECK(rectangle.left == 1);
            CHECK(rectangle.top == 2);
            CHECK(rectangle.width == 3);
            CHECK(rectangle.height == 4);
        }

        SUBCASE("Conversion constructor")
        {
            sf::FloatRect sourceRectangle({1.0f, 2.0f}, {3.0f, 4.0f});
            sf::IntRect rectangle(sourceRectangle);

            CHECK(rectangle.left == static_cast<int>(sourceRectangle.left));
            CHECK(rectangle.top == static_cast<int>(sourceRectangle.top));
            CHECK(rectangle.width == static_cast<int>(sourceRectangle.width));
            CHECK(rectangle.height == static_cast<int>(sourceRectangle.height));
        }
    }

    SUBCASE("Containment")
    {
        SUBCASE("contains(Vector2)")
        {
            sf::IntRect rectangle({0, 0}, {10, 10});

            CHECK(rectangle.contains(sf::Vector2i(0, 0)) == true);
            CHECK(rectangle.contains(sf::Vector2i(9, 0)) == true);
            CHECK(rectangle.contains(sf::Vector2i(0, 9)) == true);
            CHECK(rectangle.contains(sf::Vector2i(9, 9)) == true);
            CHECK(rectangle.contains(sf::Vector2i(9, 10)) == false);
            CHECK(rectangle.contains(sf::Vector2i(10, 9)) == false);
            CHECK(rectangle.contains(sf::Vector2i(10, 10)) == false);
            CHECK(rectangle.contains(sf::Vector2i(15, 15)) == false);
        }
    }

    SUBCASE("Intersection")
    {
        const sf::IntRect rectangle({0, 0}, {10, 10});
        const sf::IntRect intersectingRectangle({5, 5}, {10, 10});

        const auto intersectionResult = rectangle.findIntersection(intersectingRectangle);
        REQUIRE(intersectionResult.has_value());
        CHECK(intersectionResult->top == 5);
        CHECK(intersectionResult->left == 5);
        CHECK(intersectionResult->width == 5);
        CHECK(intersectionResult->height == 5);

        const sf::IntRect nonIntersectingRectangle({-5, -5}, {5, 5});
        CHECK_FALSE(rectangle.findIntersection(nonIntersectingRectangle).has_value());
        CHECK_FALSE(rectangle.findIntersection(nonIntersectingRectangle));
    }

    SUBCASE("Comparison operations")
    {
        sf::IntRect firstRectangle({1, 3}, {2, 5});
        sf::IntRect secondRectangle({1, 3}, {2, 5});
        sf::IntRect differentRectangle({3, 1}, {5, 2});

        CHECK(firstRectangle == secondRectangle);
        CHECK(firstRectangle != differentRectangle);
    }
}