Fixes #60: Diagnostic messages do not include banner/time

Author: bradwilson

xunit.runner.visualstudio.testadapter/Visitors/DiagnosticMessageVisitor.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Diagnostics;
 using Microsoft.VisualStudio.TestPlatform.ObjectModel.Logging;
 using Xunit.Abstractions;
 
@@ -9,18 +10,20 @@ public class DiagnosticMessageVisitor : TestMessageVisitor
         readonly string assemblyDisplayName;
         readonly IMessageLogger logger;
         readonly bool showDiagnostics;
+        readonly Stopwatch stopwatch;
 
-        public DiagnosticMessageVisitor(IMessageLogger logger, string assemblyDisplayName, bool showDiagnostics)
+        public DiagnosticMessageVisitor(IMessageLogger logger, string assemblyDisplayName, bool showDiagnostics, Stopwatch stopwatch)
         {
             this.logger = logger;
             this.assemblyDisplayName = assemblyDisplayName;
             this.showDiagnostics = showDiagnostics;
+            this.stopwatch = stopwatch;
         }
 
         protected override bool Visit(IDiagnosticMessage diagnosticMessage)
         {
             if (showDiagnostics)
-                logger.SendMessage(TestMessageLevel.Warning, String.Format("{0}: {1}", assemblyDisplayName, diagnosticMessage.Message));
+                logger.SendMessage(TestMessageLevel.Warning, String.Format("[xUnit.net {0}] {1}: {2}", stopwatch.Elapsed, assemblyDisplayName, diagnosticMessage.Message));
 
             return base.Visit(diagnosticMessage);
         }

xunit.runner.visualstudio.testadapter/VsTestRunner.cs

@@ -98,7 +98,7 @@ void DiscoverTests<TVisitor>(IEnumerable<string> sources,
                             }
                             else
                             {
-                                var diagnosticMessageVisitor = new DiagnosticMessageVisitor(logger, fileName, configuration.DiagnosticMessagesOrDefault);
+                                var diagnosticMessageVisitor = new DiagnosticMessageVisitor(logger, fileName, configuration.DiagnosticMessagesOrDefault, stopwatch);
 
                                 using (var framework = new XunitFrontController(assemblyFileName, configFileName: null, shadowCopy: true, diagnosticMessageSink: diagnosticMessageVisitor))
                                 {
@@ -313,7 +313,7 @@ void RunTestsInAssembly(IFrameworkHandle frameworkHandle,
             assemblyFileName = Path.Combine(Windows.ApplicationModel.Package.Current.InstalledLocation.Path, Path.GetFileName(assemblyFileName));
 #endif
 
-            var diagnosticMessageVisitor = new DiagnosticMessageVisitor(frameworkHandle, assemblyDisplayName, runInfo.Configuration.DiagnosticMessagesOrDefault);
+            var diagnosticMessageVisitor = new DiagnosticMessageVisitor(frameworkHandle, assemblyDisplayName, runInfo.Configuration.DiagnosticMessagesOrDefault, stopwatch);
             var controller = new XunitFrontController(assemblyFileName, configFileName: null, shadowCopy: true, diagnosticMessageSink: diagnosticMessageVisitor);
 
             lock (toDispose)