public void ConfigureDefaultHmacDelegatingHandlerOptionProvider_HttpClientBuilderIsNull_ThrowsArgumentNullException()
        {
            var exception = Assert.Throws <ArgumentNullException>(() => HttpClientBuilderExtensions.ConfigureDefaultHmacDelegatingHandlerOptionProvider(null, configuration: null));

            Assert.Equal("builder", exception.ParamName);

            exception = Assert.Throws <ArgumentNullException>(() => HttpClientBuilderExtensions.ConfigureDefaultHmacDelegatingHandlerOptionProvider(null, null));
            Assert.Equal("builder", exception.ParamName);
        }
        public void AddHmacDelegatingHandler_HttpClientBuilderIsNull_ThrowsArgumentNullException()
        {
            var exception = Assert.Throws <ArgumentNullException>(() => HttpClientBuilderExtensions.AddHmacDelegatingHandler(null));

            Assert.Equal("builder", exception.ParamName);
        }