File: RenderWindow.test.cpp

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#include <SFML/Graphics/RenderWindow.hpp>

// Other 1st party headers
#include <SFML/Graphics/Image.hpp>
#include <SFML/Graphics/Texture.hpp>

#include <SFML/Window/VideoMode.hpp>

#include <SFML/System/String.hpp>

#include <catch2/catch_test_macros.hpp>

#include <GraphicsUtil.hpp>
#include <WindowUtil.hpp>
#include <type_traits>

TEST_CASE("[Graphics] sf::RenderWindow", runDisplayTests())
{
    SECTION("Type traits")
    {
        STATIC_CHECK(std::has_virtual_destructor_v<sf::RenderWindow>);
        STATIC_CHECK(!std::is_copy_constructible_v<sf::RenderWindow>);
        STATIC_CHECK(!std::is_copy_assignable_v<sf::RenderWindow>);
        STATIC_CHECK(std::is_nothrow_move_constructible_v<sf::RenderWindow>);
        STATIC_CHECK(std::is_nothrow_move_assignable_v<sf::RenderWindow>);
    }

    SECTION("Construction")
    {
        SECTION("Style, state, and settings")
        {
            const sf::RenderWindow window(sf::VideoMode(sf::Vector2u(256, 256), 24),
                                          "Window Title",
                                          sf::Style::Default,
                                          sf::State::Windowed,
                                          sf::ContextSettings{});
            CHECK(window.isOpen());
            CHECK(window.getSize() == sf::Vector2u(256, 256));
            CHECK(window.getNativeHandle() != sf::WindowHandle());
            CHECK(window.getSettings().attributeFlags == sf::ContextSettings::Default);
            CHECK(!window.isSrgb());
            CHECK(window.getView().getCenter() == sf::Vector2f(128, 128));
            CHECK(window.getView().getSize() == sf::Vector2f(256, 256));
            CHECK(window.getView().getRotation() == sf::Angle::Zero);
            CHECK(window.getView().getViewport() == sf::FloatRect({0, 0}, {1, 1}));
            CHECK(window.getView().getTransform() == sf::Transform(0.0078125f, 0, -1, 0, -0.0078125f, 1, 0, 0, 1));
        }

        SECTION("State and settings")
        {
            const sf::RenderWindow window(sf::VideoMode(sf::Vector2u(240, 300), 24),
                                          "Window Title",
                                          sf::State::Windowed,
                                          sf::ContextSettings{});
            CHECK(window.isOpen());
            CHECK(window.getSize() == sf::Vector2u(240, 300));
            CHECK(window.getNativeHandle() != sf::WindowHandle());
            CHECK(window.getSettings().attributeFlags == sf::ContextSettings::Default);
            CHECK(!window.isSrgb());
            CHECK(window.getView().getCenter() == sf::Vector2f(120, 150));
            CHECK(window.getView().getSize() == sf::Vector2f(240, 300));
            CHECK(window.getView().getRotation() == sf::Angle::Zero);
            CHECK(window.getView().getViewport() == sf::FloatRect({0, 0}, {1, 1}));
            CHECK(window.getView().getTransform() ==
                  Approx(sf::Transform(0.00833333f, 0, -1, 0, -0.00666667f, 1, 0, 0, 1)));
        }
    }

    SECTION("Clear")
    {
        sf::RenderWindow window(sf::VideoMode(sf::Vector2u(256, 256), 24),
                                "Window Title",
                                sf::Style::Default,
                                sf::State::Windowed,
                                sf::ContextSettings{});
        REQUIRE(window.getSize() == sf::Vector2u(256, 256));

        sf::Texture texture(window.getSize());

        window.clear(sf::Color::Red);
        texture.update(window);
        CHECK(texture.copyToImage().getPixel(sf::Vector2u(64, 64)) == sf::Color::Red);

        window.clear(sf::Color::Green);
        texture.update(window);
        CHECK(texture.copyToImage().getPixel(sf::Vector2u(128, 128)) == sf::Color::Green);

        window.clear(sf::Color::Blue);
        texture.update(window);
        CHECK(texture.copyToImage().getPixel(sf::Vector2u(196, 196)) == sf::Color::Blue);
    }
}