Fixes for FileVersionProvider

- Path with query string works
 - No exception is thrown for absolute path

src/Microsoft.AspNet.Mvc.TagHelpers/Internal/FileVersionProvider.cs

@@ -48,6 +48,20 @@ namespace Microsoft.AspNet.Mvc.TagHelpers.Internal
         public string AddFileVersionToPath([NotNull] string path)
         {
             var resolvedPath = path;
+
+            var queryStringStartIndex = path.IndexOf('?');
+            if (queryStringStartIndex != -1)
+            {
+                resolvedPath = path.Substring(0, queryStringStartIndex);
+            }
+
+            Uri uri;
+            if (Uri.TryCreate(resolvedPath, UriKind.Absolute, out uri))
+            {
+                // Don't append version if the path is absolute.
+                return path;
+            }
+
             var fileInfo = _fileProvider.GetFileInfo(resolvedPath);
             if (!fileInfo.Exists)
             {

test/Microsoft.AspNet.Mvc.FunctionalTests/compiler/resources/HtmlGenerationWebSite.HtmlGeneration_Home.Image.html

@@ -11,10 +11,22 @@
     <!-- Plain image tag -->
     <img src="/images/red.png" alt="Red block" title="&lt;the title>">
 
-    <!-- Plain image  tag with file version -->
+    <!-- Plain image tag with file version -->
     <img alt="Red versioned" title="Red versioned" src="/images/red.png?v=W2F5D366_nQ2fQqUk3URdgWy2ZekXjHzHJaY5yaiOOk" />
 
-    <!-- Plain image  tag with file version set to false -->
+    <!-- Plain image tag with file version set to false -->
     <img alt="Red explicitly not versioned" title="Red versioned" src="/images/red.png" />
+
+    <!-- Plain image tag with absolute path and file version -->
+    <img alt="Absolute path versioned" src="http://contoso.com/hello/world" />
+
+    <!-- Plain image tag with file version and path to file that does not exist -->
+    <img alt="Path to non existing file" src="/images/fake.png" />
+
+    <!-- Plain image tag with file version and path containing query string -->
+    <img alt="Path with query string" src="/images/red.png?abc=def&amp;v=W2F5D366_nQ2fQqUk3URdgWy2ZekXjHzHJaY5yaiOOk" />
+
+    <!-- Plain image tag with file version and path linking to some action -->
+    <img alt="Path linking to some action" src="/controller/action" />
 </body>
 </html>

test/WebSites/HtmlGenerationWebSite/Views/HtmlGeneration_Home/Image.cshtml

@@ -13,10 +13,22 @@
     <!-- Plain image tag -->
     <img src="~/images/red.png" alt="Red block" title="&lt;the title>">
 
-    <!-- Plain image  tag with file version -->
+    <!-- Plain image tag with file version -->
     <img src="~/images/red.png" alt="Red versioned" title="Red versioned" asp-append-version="true" />
 
-    <!-- Plain image  tag with file version set to false -->
+    <!-- Plain image tag with file version set to false -->
     <img src="~/images/red.png" alt="Red explicitly not versioned" title="Red versioned" asp-append-version="false" />
+
+    <!-- Plain image tag with absolute path and file version -->
+    <img src="http://contoso.com/hello/world" alt="Absolute path versioned" asp-append-version="true" />
+
+    <!-- Plain image tag with file version and path to file that does not exist -->
+    <img src="~/images/fake.png" alt="Path to non existing file" asp-append-version="true" />
+
+    <!-- Plain image tag with file version and path containing query string -->
+    <img src="~/images/red.png?abc=def" alt="Path with query string" asp-append-version="true" />
+
+    <!-- Plain image tag with file version and path linking to some action -->
+    <img src="/controller/action" alt="Path linking to some action" asp-append-version="true" />
 </body>
 </html>