public void Arrange_should_arrange_inner_component(string contentAlignment, string clipMargin, string expectedInnerLayout, string expectedViewRegion)
{
var viewport = new Viewport
{
Width = 30,
Height = 30,
ClipMargin = Spacer.Parse(clipMargin),
Inner = new FixedMeasureComponent(100, 200),
ContentAlignment = Alignment.Parse(contentAlignment)
};
viewport.Measure(new Size(int.MaxValue, int.MaxValue), TestRendererContext.Instance);
viewport.Arrange(new Rectangle(1, 2, 30, 30));
viewport.Inner.Layout.ShouldBe(RectParser.ToRect(expectedInnerLayout));
viewport.ActualViewRegion.ShouldBe(RectParser.ToRect(expectedViewRegion));
}