TEST(ImageManager, Updates) {
    ImageManager imageManager;

    PremultipliedImage imageA({ 16, 12 });
    imageA.fill(255);
    imageManager.addImage(makeMutable<style::Image::Impl>("one", std::move(imageA), 1));

    auto a = *imageManager.getPattern("one");
    EXPECT_EQ(1, a.tl()[0]);
    EXPECT_EQ(1, a.tl()[1]);
    EXPECT_EQ(17, a.br()[0]);
    EXPECT_EQ(13, a.br()[1]);
    EXPECT_EQ(16, a.displaySize()[0]);
    EXPECT_EQ(12, a.displaySize()[1]);
    EXPECT_EQ(1.0f, a.pixelRatio);
    test::checkImage("test/fixtures/image_manager/updates_before", imageManager.getAtlasImage());

    PremultipliedImage imageB({ 5, 5 });
    imageA.fill(200);
    imageManager.updateImage(makeMutable<style::Image::Impl>("one", std::move(imageB), 1));

    auto b = *imageManager.getPattern("one");
    EXPECT_EQ(1, b.tl()[0]);
    EXPECT_EQ(1, b.tl()[1]);
    EXPECT_EQ(6, b.br()[0]);
    EXPECT_EQ(6, b.br()[1]);
    EXPECT_EQ(5, b.displaySize()[0]);
    EXPECT_EQ(5, b.displaySize()[1]);
    EXPECT_EQ(1.0f, b.pixelRatio);
    test::checkImage("test/fixtures/image_manager/updates_after", imageManager.getAtlasImage());
}
TEST(ImageManager, Basic) {
    FixtureLog log;
    ImageManager imageManager;

    auto images = parseSprite(util::read_file("test/fixtures/annotations/emerald.png"),
                              util::read_file("test/fixtures/annotations/emerald.json"));
    for (auto& image : images) {
        imageManager.addImage(image->baseImpl);
    }

    auto metro = *imageManager.getPattern("metro");
    EXPECT_EQ(1, metro.tl()[0]);
    EXPECT_EQ(1, metro.tl()[1]);
    EXPECT_EQ(19, metro.br()[0]);
    EXPECT_EQ(19, metro.br()[1]);
    EXPECT_EQ(18, metro.displaySize()[0]);
    EXPECT_EQ(18, metro.displaySize()[1]);
    EXPECT_EQ(1.0f, metro.pixelRatio);
    EXPECT_EQ(imageManager.getPixelSize(), imageManager.getAtlasImage().size);

    test::checkImage("test/fixtures/image_manager/basic", imageManager.getAtlasImage());
}