public void ContentController_DeleteMetaData_Throws_On_Negative_ContentItemId()
        {
            //Arrange
            Mock<IDataService> mockDataService = new Mock<IDataService>();
            ContentController controller = new ContentController(mockDataService.Object);

            ContentItem content = ContentTestHelper.CreateValidContentItem();
            content.ContentItemId = Null.NullInteger;

            //Act, Arrange
            Assert.Throws<ArgumentException>(() => controller.DeleteMetaData(content,
                                                                             Constants.CONTENT_ValidMetaDataName,
                                                                             Constants.CONTENT_ValidMetaDataValue));
        }
        public void ContentController_DeleteMetaData_Throws_On_Null_MetaDataName()
        {
            //Arrange
            Mock<IDataService> mockDataService = new Mock<IDataService>();
            ContentController controller = new ContentController(mockDataService.Object);

            //Act, Arrange
            AutoTester.ArgumentNull<ContentItem>(content => controller.DeleteMetaData(content,
                                                                                      Null.NullString,
                                                                                      Constants.
                                                                                          CONTENT_ValidMetaDataValue));
        }
        public void ContentController_DeleteMetaData_Calls_DataService_On_Valid_Arguments()
        {
            //Arrange
            Mock<IDataService> mockDataService = new Mock<IDataService>();
            ContentController controller = new ContentController(mockDataService.Object);

            ContentItem content = ContentTestHelper.CreateValidContentItem();
            content.ContentItemId = Constants.CONTENT_ValidContentItemId;

            //Act
            controller.DeleteMetaData(content, Constants.CONTENT_ValidMetaDataName, Constants.CONTENT_ValidMetaDataValue);

            //Assert
            mockDataService.Verify(
                ds =>
                ds.DeleteMetaData(content, Constants.CONTENT_ValidMetaDataName, Constants.CONTENT_ValidMetaDataValue));
        }