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

        public void ContentLanguage_UseAddMethod_AddedValueCanBeRetrievedUsingProperty()
        {
            _headers.TryAddWithoutValidation("Content-Language", ",custom1, custom2, custom3,");

            Assert.Equal(3, _headers.ContentLanguage.Count);
            Assert.Equal(3, _headers.GetValues("Content-Language").Count());

            Assert.Equal("custom1", _headers.ContentLanguage.ElementAt(0));
            Assert.Equal("custom2", _headers.ContentLanguage.ElementAt(1));
            Assert.Equal("custom3", _headers.ContentLanguage.ElementAt(2));

            _headers.ContentLanguage.Clear();
            Assert.Equal(0, _headers.ContentLanguage.Count);
            Assert.False(_headers.Contains("Content-Language"));
        }