Enable HtmlHelperExtensionTests for .NET Core

Author: Dustin Masters

tests/React.Tests/Mvc/HtmlHelperExtensionsTests.cs

@@ -5,12 +5,15 @@
  * LICENSE file in the root directory of this source tree.
  */
 #if NET452
+using React.Web.Mvc;
+#else
+using React.AspNet;
+#endif
 
 using System;
 using System.IO;
 using System.Security.Cryptography;
 using Moq;
-using React.Web.Mvc;
 using Xunit;
 
 namespace React.Tests.Mvc
@@ -269,4 +272,3 @@ public void RenderFunctionsCalledNonLazily()
 		}
 	}
 }
-#endif

tests/React.Tests/Mvc/TestUtilities.cs

@@ -0,0 +1,21 @@
+#if !NET452
+using System.IO;
+using System.Text.Encodings.Web;
+using Microsoft.AspNetCore.Html;
+
+namespace React.Tests.Mvc
+{
+	public static class TestUtilities
+	{
+		public static string ToHtmlString(this IHtmlContent source)
+		{
+			using (var writer = new StringWriter())
+			{
+				source.WriteTo(writer, HtmlEncoder.Default);
+				return writer.ToString();
+			}
+		}
+	}
+}
+
+#endif