public void TestThatGeneratePreviewLayerGeneratesPreviewLayer()
{
BitmapManager bitmapManager = new BitmapManager
{
ActiveDocument = new Document(10, 10)
};
bitmapManager.GeneratePreviewLayer();
Assert.NotNull(bitmapManager.PreviewLayer);
Assert.Equal(0, bitmapManager.PreviewLayer.Width + bitmapManager.PreviewLayer.Height); //Size is zero
Assert.Equal(0, bitmapManager.PreviewLayer.OffsetX + bitmapManager.PreviewLayer.OffsetY); //Offset is zero
Assert.Equal(bitmapManager.ActiveDocument.Width, bitmapManager.PreviewLayer.MaxWidth);
Assert.Equal(bitmapManager.ActiveDocument.Height, bitmapManager.PreviewLayer.MaxHeight);
}