[VS Addin] Add more information when compile tests fail.

visual_studio/NativeClientVSAddIn/UnitTests/BaseCompileTest.cs

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 using System;
 using System.Text;
 using System.Collections.Generic;
 using EnvDTE;
 using EnvDTE80;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 using Microsoft.VisualStudio.VCProjectEngine;
@@ skipping 58 matching lines @@
 
         /// <summary>
         /// Helper function which opens the given solution, sets the configuration and platform and
         /// tries to compile, failing the test if the build does not succeed.
         /// </summary>
         /// <param name="solutionPath">Path to the solution to open.</param>
         /// <param name="configName">Solution Configuration name (Debug or Release).</param>
         /// <param name="platformName">Platform name.</param>
         private void TryCompile(string configName, string platformName)
         {
-            string failFormat = "Project compile failed for {0} platform {1} config."
+            string failFormat = "Project compile failed for {0} platform {1} config.\n"
+                              + "If this test fails it could be because the build output"
+                              + "is set to Minimal or below.\n"
                               + "Build output: {2}";
             string cygwinWarningFormat = "Did not pass cygwin nodosfilewarning environment var to"
                                        + " tools Platform: {0}, configuration: {1}";
             StringComparison ignoreCase = StringComparison.InvariantCultureIgnoreCase;
 
             // Open Debug configuration and build.
             TestUtilities.SetSolutionConfiguration(
                 dte_, TestUtilities.NaClProjectUniqueName, configName, platformName);
             dte_.Solution.SolutionBuild.Build(true);
 
             string compileOutput = TestUtilities.GetPaneText(
                 dte_.ToolWindows.OutputWindow.OutputWindowPanes.Item("Build"));
+
+            // Check for "Build succeeded" in the output pane. This only works if
+            // the visual studio output verbosity is set to Normal or above.
+            // TODO(sbc): find some other way to verify success or at least verify
+            // that the build verbosity is set to Normal or above.
             Assert.IsTrue(
                 compileOutput.Contains("Build succeeded.", ignoreCase),
                 string.Format(failFormat, platformName, configName, compileOutput));
             Assert.IsFalse(
                 compileOutput.Contains("MS-DOS style path detected", ignoreCase),
                 string.Format(cygwinWarningFormat, platformName, configName));
         }
 
         /// <summary>
         /// Set the type of the project: Executable, DynamicLibrary, StaticLibrary
@@ skipping 21 matching lines @@
             if (ppapi)
             {
                 SetProjectType("DynamicLibrary", platform);
                 TryCompile("Debug", platform);
                 TryCompile("Release", platform);
             }
             dte_.Solution.Close(true);
         }
     }
 }