public void ShouldReturnConfigurationValue()
        {
            var value  = "aaa";
            var entity = new Configuration {
                ConfigurationType = ConfigurationType.RemoteServiceAddress, Value = value
            };
            var dbEntities = new List <Configuration> {
                entity
            };
            var dbSet = GetQueryableMockDbSet(dbEntities);

            contextMock.SetupGet(x => x.Configurations).Returns(dbSet);

            var result = repository.GetConfigurationValue(ConfigurationType.RemoteServiceAddress);

            Assert.AreEqual(value, result);
        }