TEST_F(ScrollableAreaTest, RecalculatesScrollbarOverlayIfBackgroundChanges)
{
    OwnPtrWillBeRawPtr<MockScrollableArea> scrollableArea = MockScrollableArea::create(IntPoint(0, 100));

    EXPECT_EQ(ScrollbarOverlayStyleDefault, scrollableArea->scrollbarOverlayStyle());
    scrollableArea->recalculateScrollbarOverlayStyle(Color(34, 85, 51));
    EXPECT_EQ(ScrollbarOverlayStyleLight, scrollableArea->scrollbarOverlayStyle());
    scrollableArea->recalculateScrollbarOverlayStyle(Color(236, 143, 185));
    EXPECT_EQ(ScrollbarOverlayStyleDefault, scrollableArea->scrollbarOverlayStyle());
}