public void GivenValidData_WhenADocumentIsAddedToACart_ThenTheCartIsUpdated() { _cartItemService.AddItem(It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>()); _cartItemEngine.Verify(s => s.AddItem(It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>(), It.IsAny <string>()), Times.Once); }