public void AnArgumentNullExceptionShouldBeThrown()
            {
                var configureExtensions = new ConfigureExtensions();

                var exception = Assert.Throws <ArgumentNullException>(() => configureExtensions.SetMappingConvention(null));

                Assert.Equal("mappingConvention", exception.ParamName);
            }
            public WhenCallingSetMappingConvention()
            {
                var configureExtensions = new ConfigureExtensions();

                configureExtensions.SetMappingConvention(this.mappingConvention);
            }