public void Should_associate_the_configuration_value_to_the_key()
            {
                // Arrange
                var configurationBuilder = new ConfigurationBuilder();

                // Act
                configurationBuilder.AddKeyValue("SomeKey", "SomeValue");

                // Assert
                var configurationRoot = configurationBuilder.Build();
                var value             = configurationRoot.GetValue <string>("SomeKey");

                Assert.Equal("SomeValue", value);
            }