public void Rectangle_TurnsOnCorrect_Pixels(TurnOnPixelsInRectangleCommand sut, Pixel[] expected)
{
var viewer = new StubViewer(4, 4);
sut.Update(viewer);
Assert.Equal(4, viewer.Pixels.Count);
Assert.True(viewer.Pixels.Contains(expected[0]));
Assert.True(viewer.Pixels.Contains(expected[1]));
Assert.True(viewer.Pixels.Contains(expected[2]));
Assert.True(viewer.Pixels.Contains(expected[3]));
}
