public void TestEventTypeCreate() { // Arrange. var eventTypeInfo = new NameCommentStruct { Id = "123", Name = "TestEventType", Comment = "ForTest" }; var dataServiceMock = new Mock <IDataService>(); var service = new DefaultSubscriptionsManager(dataServiceMock.Object, GetMockStatisticsService()); // Act. service.CreateEventType(eventTypeInfo); // Assert. dataServiceMock.Verify(f => f.UpdateObject(It.Is <MessageType>(t => t.ID == eventTypeInfo.Id && t.Name == eventTypeInfo.Name && t.Description == eventTypeInfo.Comment)), Times.Once); }