public void Test3_WcfHelper_ConfigurationManager_Key_Fails()
        {
            //arrange
            var key = @"Test3";
            //var expected = @"Test3_Faild";
            var result = string.Empty;

            //act
            var config = new WcfHelper.ConfigurationManager(typeof(OperationContextMock));
            if (config.Configuration.HasFile)
            {
                try
                {
                    result = config.AppSettings.Settings[key].Value;
                }
                catch (NullReferenceException)
                {
                    return;
                }

            }

            //assert
            Assert.Fail();
        }
        public void Test2_WcfHelper_ConfigurationManager_Ok()
        {
            //arrange
            var key = @"Test2";
            var expected = @"Test2_Right";
            var result = string.Empty;

            //act
            var config = new WcfHelper.ConfigurationManager(typeof(OperationContextMock));
            if (config.Configuration.HasFile)
            {
                result = config.AppSettings.Settings[key].Value;
            }

            //assert
            Assert.AreEqual(expected, result);
        }