Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/class/System.Net.Http/Test/System.Net.Http.Headers/HttpRequestHeadersTest.cs

@@ -0,0 +1,18 @@
+using NUnit.Framework;
+using System.Net.Http;
+
+namespace MonoTests.System.Net.Http.Headers
+{
+	[TestFixture]
+	public class HttpRequestHeadersTest
+	{
+		[Test]
+		public void AccessHostAfterAdding()
+		{
+			var requestMessage = new HttpRequestMessage ();
+			requestMessage.Headers.TryAddWithoutValidation ("Host", "MyHost:90");
+
+			Assert.AreEqual ("MyHost:90", requestMessage.Headers.Host);
+		}
+	}
+}