public void SetPletauShouldSetPlateuSize([Frozen] Mock <IPlateu> plateu, Size size) { SetPlateuSizeCommand sut = new SetPlateuSizeCommand(size); sut.SetReceiver(plateu.Object); sut.Execute(); plateu.VerifySet(p => p.Size = It.Is <Size>(p => p.Height == size.Height && p.Width == size.Width), Times.Once); }