Fixed: Indexer testing

Omg now has a preprocessor to catch authentication issues
Indexer testing works again, instead of always being successful

src/NzbDrone.Core/Indexers/HttpIndexerBase.cs

@@ -2,7 +2,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Net;
-using System.Text;
 using FluentValidation.Results;
 using NLog;
 using NzbDrone.Common;
@@ -186,9 +185,8 @@ namespace NzbDrone.Core.Indexers
 
         protected virtual IList<ReleaseInfo> FetchPage(IndexerRequest request, IParseIndexerResponse parser)
         {
-            var url = request.Url;
-
             _logger.Debug("Downloading Feed " + request.Url);
+
             var response = new IndexerResponse(request, _httpClient.Execute(request.HttpRequest));
 
             return parser.ParseResponse(response).ToList();
@@ -201,12 +199,16 @@ namespace NzbDrone.Core.Indexers
 
         protected virtual ValidationFailure TestConnection()
         {
-            // TODO: This doesn't even work coz those exceptions get catched.
             try
             {
-                var releases = FetchRecent();
+                var parser = GetParser();
+                var generator = GetRequestGenerator();
+                var releases = FetchPage(generator.GetRecentRequests().First().First(), parser);
 
-                if (releases.Any()) return null;
+                if (releases.Empty())
+                {
+                    return new ValidationFailure("Url", "No results were returned from your indexer, please check your settings.");
+                }
             }
             catch (ApiKeyException)
             {

src/NzbDrone.Core/Indexers/Newznab/NewznabRssParser.cs

@@ -45,7 +45,6 @@ namespace NzbDrone.Core.Indexers.Newznab
             return releaseInfo;
         }
 
-
         protected override String GetInfoUrl(XElement item)
         {
             return item.TryGetValue("comments").TrimEnd("#comments");

src/NzbDrone.Core/Indexers/Omgwtfnzbs/OmgwtfnzbsRssParser.cs

@@ -1,6 +1,8 @@
 using System;
+using System.Linq;
 using System.Text.RegularExpressions;
 using System.Xml.Linq;
+using NzbDrone.Core.Indexers.Exceptions;
 
 namespace NzbDrone.Core.Indexers.Omgwtfnzbs
 {
@@ -12,6 +14,16 @@ namespace NzbDrone.Core.Indexers.Omgwtfnzbs
             UseEnclosureLength = true;
         }
 
+        protected override bool PreProcess(IndexerResponse indexerResponse)
+        {
+            var xdoc = XDocument.Parse(indexerResponse.Content);
+            var notice = xdoc.Descendants("notice").FirstOrDefault();
+
+            if (notice == null) return true;
+
+            throw new ApiKeyException(notice.Value);
+        }
+
         protected override string GetInfoUrl(XElement item)
         {
             //Todo: Me thinks I need to parse details to get this...