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

        public void LastModified_UseAddMethodWithInvalidValue_InvalidValueRecognized()
        {
            _headers.TryAddWithoutValidation("Last-Modified", " Sun, 06 Nov 1994 08:49:37 GMT ,");
            Assert.Null(_headers.GetParsedValues("Last-Modified"));
            Assert.Equal(1, _headers.GetValues("Last-Modified").Count());
            Assert.Equal(" Sun, 06 Nov 1994 08:49:37 GMT ,", _headers.GetValues("Last-Modified").First());

            _headers.Clear();
            _headers.TryAddWithoutValidation("Last-Modified", " Sun, 06 Nov ");
            Assert.Null(_headers.GetParsedValues("Last-Modified"));
            Assert.Equal(1, _headers.GetValues("Last-Modified").Count());
            Assert.Equal(" Sun, 06 Nov ", _headers.GetValues("Last-Modified").First());
        }