public void ShouldUndoChanges(int numberOfChangesToUndo)
{
//Given
PaintingMediator paint = new PaintingMediator();
CanvasBackService canvasService = new CanvasBackService();
Canvas canvasNode = new Canvas();
canvasService.SetCanvas(canvasNode);
paint.SetCanvasService(canvasService);
for (int i = 0; i < numberOfChangesToUndo; i++)
{
paint.Rotate(90);
}
//When
for (int i = 0; i < numberOfChangesToUndo; i++)
{
paint.Undo();
}
//Then
int expectedNumberOfChangesOnStack = 0;
Assert.AreEqual(expectedNumberOfChangesOnStack, paint.GetNumberOfDoneChanges());
}
public void ShouldRotateCanvas(int degrees)
{
//Given
PaintingMediator paint = new PaintingMediator();
CanvasBackService canvasService = new CanvasBackService();
Canvas canvasNode = new Canvas();
canvasService.SetCanvas(canvasNode);
paint.SetCanvasService(canvasService);
//When
paint.Rotate(degrees);
//Then
Assert.AreEqual(canvasNode.Height, canvasNode.Width);
Assert.AreEqual(canvasNode.Width, canvasNode.Height);
}