System.Net.Http.Tests.HttpContentHeadersTest.ContentLength_SetCustomValue_TryComputeLengthNotInvoked C# (CSharp) Method

        public void ContentLength_SetCustomValue_TryComputeLengthNotInvoked()
        {
            _headers = new HttpContentHeaders(new ComputeLengthHttpContent(() => { throw new ShouldNotBeInvokedException(); }));

            _headers.ContentLength = 27;
            Assert.Equal((long)27, _headers.ContentLength);
            Assert.Equal((long)27, _headers.GetParsedValues(HttpKnownHeaderNames.ContentLength));

            // After explicitly setting the content length, set it to null.
            _headers.ContentLength = null;
            Assert.Equal(null, _headers.ContentLength);
            Assert.False(_headers.Contains(HttpKnownHeaderNames.ContentLength));

            // Make sure the header gets serialized correctly
            _headers.ContentLength = 12345;
            Assert.Equal("12345", _headers.GetValues("Content-Length").First());
        }