Native Client Visual Studio Add-in

visual_studio/NativeClientVSAddIn/UnitTests/PluginDebuggerHelperTest.cs

+// Copyright (c) 2012 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.
+
+namespace UnitTests
+{
+  using System;
+  using System.Diagnostics;
+  using System.IO;
+  using System.Reflection;
+  using System.Threading;
+
+  using EnvDTE80;
+  using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+  using NativeClientVSAddIn;
+
+  /// <summary>
+  /// This is a test class for PluginDebuggerHelperTest and is intended
+  /// to contain all PluginDebuggerHelperTest Unit Tests.
+  /// </summary>
+  [TestClass]
+  public class PluginDebuggerHelperTest
+  {
+    /// <summary>
+    /// The dummy loop solution is a valid nacl/pepper plug-in VS solution.
+    /// It is copied into the testing deployment directory and opened in some tests.
+    /// Because unit-tests run in any order, the solution should not be written to
+    /// in any tests.
+    /// </summary>
+    private const string DummyLoopSolution = @"\DummyLoop\DummyLoop.sln";
+
+    /// <summary>
+    /// The main visual studio object.
+    /// </summary>
+    private DTE2 dte_ = null;
+
+    /// <summary>
+    /// Gets or sets the test context which provides information about,
+    /// and functionality for the current test run.
+    /// </summary>
+    public TestContext TestContext { get; set; }
+
+    /// <summary>
+    /// This is run before each test to create test resources.
+    /// </summary>
+    [TestInitialize]
+    public void TestSetup()
+    {
+      dte_ = TestUtilities.StartVisualStudioInstance();
+    }
+
+    /// <summary>
+    /// This is run after each test to clean up things created in TestSetup().
+    /// </summary>
+    [TestCleanup]
+    public void TestCleanup()
+    {
+      TestUtilities.CleanUpVisualStudioInstance(dte_);
+    }
+
+    /// <summary>
+    /// A test for PluginDebuggerHelper Constructor.
+    /// </summary>
+    [TestMethod]
+    public void PluginDebuggerHelperConstructorTest()
+    {
+      // Check that a null dte fails.
+      try
+      {
+        PluginDebuggerHelper nullDte = new PluginDebuggerHelper(null);
+        Assert.Fail("Using null DTE instance did not throw exception");
+      }
+      catch (ArgumentNullException)
+      {
+        // This is expected for a correct implementation.
+      }
+      catch
+      {
+        Assert.Fail("Using null DTE instance threw something other than ArgumentNullException");
+      }
+
+      PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+      Assert.AreEqual(dte_, target.dte_);
+      Assert.IsNull(target.webServerOutputPane_);
+      Assert.IsFalse(target.isProperlyInitialized_);
+    }
+
+    /// <summary>
+    /// This unit test verifies that the gdb init file is written correctly,
+    /// and old-existing GDB processes are cleaned up.
+    /// Verification of actual attachment is the responsibility of integration
+    /// tests and NaCl-GDB itself.
+    /// </summary>
+    [TestMethod]
+    [DeploymentItem("NativeClientVSAddIn.dll")]
+    public void AttachNaClGDBTest()
+    {
+      PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+      string existingGDB = "AttachNaClGDBTest_existingGDB";
+      try
+      {
+        target.pluginProjectDirectory_ = TestContext.DeploymentDirectory;
+        target.pluginAssembly_ = "fakeAssemblyString";
+        target.irtPath_ = "fakeIrtPath";
+        target.gdbPath_ = "python.exe";
+        target.gdbProcess_ = TestUtilities.StartProcessForKilling(existingGDB, 20);
+        string existingInitFileName = Path.GetTempFileName();
+        target.gdbInitFileName_ = existingInitFileName;
+        target.isProperlyInitialized_ = true;
+
+        // Visual studio won't allow adding a breakpoint unless it is associated with
+        // an existing file and valid line number, so use DummyLoopSolution.
+        dte_.Solution.Open(TestContext.DeploymentDirectory + DummyLoopSolution);
+        string fileName = "main.cpp";
+        string functionName = "DummyInstance::HandleMessage";
+        int lineNumber = 35;
+        dte_.Debugger.Breakpoints.Add(Function: functionName);
+        dte_.Debugger.Breakpoints.Add(Line: lineNumber, File: fileName);
+
+        target.AttachNaClGDB(null, new PluginDebuggerHelper.PluginFoundEventArgs(0));
+
+        Assert.IsTrue(File.Exists(target.gdbInitFileName_), "Init file not written");
+
+        string[] gdbCommands = File.ReadAllLines(target.gdbInitFileName_);
+        bool functionBP = false;
+        bool lineBP = false;
+
+        // Validate that the commands contain what we specified.
+        // The syntax itself is not validated since this add-in is not responsible for
+        // the syntax and it could change.
+        foreach (string command in gdbCommands)
+        {
+          if (command.Contains(fileName) && command.Contains(lineNumber.ToString()))
+          {
+            lineBP = true;
+          }
+
+          if (command.Contains(functionName))
+          {
+            functionBP = true;
+          }
+        }
+
+        Assert.IsFalse(
+            TestUtilities.DoesProcessExist("python.exe", existingGDB),
+            "Failed to kill existing GDB process");
+        Assert.IsFalse(
+            File.Exists(existingInitFileName),
+            "Failed to delete existing temp gdb init file");
+        Assert.IsTrue(lineBP, "Line breakpoint not properly set");
+        Assert.IsTrue(functionBP, "Function breakpoint not properly set");
+      }
+      finally
+      {
+        if (dte_.Debugger.Breakpoints != null)
+        {
+          // Remove all breakpoints.
+          foreach (EnvDTE.Breakpoint bp in dte_.Debugger.Breakpoints)
+          {
+            bp.Delete();
+          }
+        }
+
+        if (!string.IsNullOrEmpty(target.gdbInitFileName_) && File.Exists(target.gdbInitFileName_))

[binji, 2012/07/20 00:24:53]

This seems like duplication of the responsibilities of the class you're testing.

[tysand, 2012/08/07 23:01:54]

Yes, but if the test fails then we're leaking files and processes each time we
run the tests. Definitely dont want that.
On 2012/07/20 00:24:53, binji wrote:

+        {
+          File.Delete(target.gdbInitFileName_);
+        }
+
+        if (target.gdbProcess_ != null && !target.gdbProcess_.HasExited)

[binji, 2012/07/20 00:24:53]

same here

[tysand, 2012/08/07 23:01:54]

Done.

+        {
+          target.gdbProcess_.Kill();
+          target.gdbProcess_.Dispose();
+        }
+      }
+    }
+
+    /// <summary>
+    /// A test for FindAndAttachToPlugin.
+    /// </summary>
+    [TestMethod]
+    [DeploymentItem("NativeClientVSAddIn.dll")]
+    public void FindAndAttachToPluginTest()
+    {
+      PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+      target.isProperlyInitialized_ = true;
+
+      MockProcessSearcher processResults = new MockProcessSearcher();
+      uint currentProcId = (uint)System.Diagnostics.Process.GetCurrentProcess().Id;
+      string naclCommandLine = Strings.NaClProcessTypeFlag + " " + Strings.NaClDebugFlag;
+      target.pluginAssembly_ = "testAssemblyPath";
+      string pluginLoadFlag = string.Format(
+          Strings.PepperProcessPluginFlagFormat, target.pluginAssembly_);
+      string pepperCommandLine = string.Concat(
+          pluginLoadFlag, " ", Strings.PepperProcessTypeFlag);
+      string pluginFlagCommandLine =
+          string.Format(Strings.PepperProcessPluginFlagFormat, target.pluginAssembly_);
+
+      // Fake the list of processes on the system.
+      processResults.ProcessList.Add(
+          new ProcessInfo(currentProcId, currentProcId, string.Empty, string.Empty, "devenv.exe"));
+      processResults.ProcessList.Add(
+          new ProcessInfo(1, currentProcId, string.Empty, string.Empty, "MyParentProcess"));
+      processResults.ProcessList.Add(
+          new ProcessInfo(10, 1, string.Empty, pepperCommandLine, Strings.PepperProcessName));
+      processResults.ProcessList.Add(
+          new ProcessInfo(11, 1, string.Empty, naclCommandLine, Strings.NaClProcessName));
+      processResults.ProcessList.Add(
+          new ProcessInfo(12, 1, string.Empty, pluginFlagCommandLine, Strings.PepperProcessName));
+      processResults.ProcessList.Add(
+          new ProcessInfo(13, 1, string.Empty, Strings.NaClDebugFlag, Strings.NaClProcessName));
+
+      // These two don't have this process as their parent, so they should not be attached to.
+      processResults.ProcessList.Add(
+          new ProcessInfo(14, 14, string.Empty, pepperCommandLine, Strings.PepperProcessName));
+      processResults.ProcessList.Add(
+          new ProcessInfo(15, 15, string.Empty, naclCommandLine, Strings.NaClProcessName));
+
+      // Set the private value to the mock object (can't use accessor since no valid cast).
+      typeof(PluginDebuggerHelper).GetField(
+          "processSearcher_",
+          BindingFlags.NonPublic | BindingFlags.Instance).SetValue(target.Target, processResults);
+
+      // Test that the correct processes are attached to.
+      bool goodNaCl = false;
+      bool goodPepper = false;
+      var handler = new EventHandler<NativeClientVSAddIn.PluginDebuggerHelper.PluginFoundEventArgs>(
+        delegate(object unused, NativeClientVSAddIn.PluginDebuggerHelper.PluginFoundEventArgs args)
+        {
+          switch (args.ProcessID)
+          {
+            case 10:
+              if (goodPepper)
+              {
+                Assert.Fail("Should not attach twice to same pepper process");
+              }
+
+              if (target.projectPlatformType_ ==
+                  PluginDebuggerHelper_Accessor.ProjectPlatformType.NaCl)
+              {
+                Assert.Fail("Attached to pepper process when NaCl was the target");
+              }
+
+              goodPepper = true;
+              break;
+            case 11:
+              if (goodNaCl)
+              {
+                Assert.Fail("Should not attach twice to same nacl process");
+              }
+
+              if (target.projectPlatformType_ ==
+                  PluginDebuggerHelper_Accessor.ProjectPlatformType.Pepper)
+              {
+                Assert.Fail("Attached to nacl process when pepper was the target");
+              }
+
+              goodNaCl = true;
+              break;
+            case 12:
+              Assert.Fail("Should not attach to pepper process with bad args");
+              break;
+            case 13:
+              Assert.Fail("Should not attach to nacl process with bad args");
+              break;
+            case 14:
+              Assert.Fail("Should not attach to pepper process that is not "
+                        + "descendant of Visual Studio");
+              break;
+            case 15:
+              Assert.Fail("Should not attach to nacl process that is not "
+                        + "descendant of Visual Studio");
+              break;
+            default:
+              Assert.Fail("Should not attach to non-pepper/non-nacl process");
+              break;
+          }
+        });
+
+      target.add_PluginFoundEvent(handler);
+      target.projectPlatformType_ = PluginDebuggerHelper_Accessor.ProjectPlatformType.Pepper;
+      target.FindAndAttachToPlugin(null, null);
+      target.projectPlatformType_ = PluginDebuggerHelper_Accessor.ProjectPlatformType.NaCl;
+      target.FindAndAttachToPlugin(null, null);
+      target.remove_PluginFoundEvent(handler);
+      Assert.IsTrue(goodPepper, "Failed to attach to pepper process");
+      Assert.IsTrue(goodNaCl, "Failed to attach to NaCl process");
+    }
+
+    /// <summary>
+    /// A test for LoadProjectSettings.
+    /// </summary>
+    [TestMethod]
+    public void LoadProjectSettingsTest()
+    {
+      string expectedSDKRootDir =
+          Environment.GetEnvironmentVariable(Strings.SDKPathEnvironmentVariable);
+      Assert.IsNotNull(expectedSDKRootDir, "SDK Path environment variable not set!");
+
+      PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+      target.isProperlyInitialized_ = false;
+      try
+      {
+        target.LoadProjectSettings();
+        Assert.Fail("Initializing with no loaded solution shouldn't succeed");
+      }
+      catch (ArgumentOutOfRangeException)
+      {
+        // This is expected for a correct implementation.
+      }
+
+      dte_.Solution.Open(TestContext.DeploymentDirectory + DummyLoopSolution);
+
+      // Setting the start-up project to a non-cpp project should make loading fail.
+      string badProjectUniqueName = @"NotNaCl\NotNaCl.csproj";
+      object[] badStartupProj = { badProjectUniqueName };
+      dte_.Solution.SolutionBuild.StartupProjects = badStartupProj;
+      Assert.IsFalse(target.LoadProjectSettings());
+      Assert.IsFalse(target.isProperlyInitialized_);
+
+      // Setting the start-up project to correct C++ project, but also setting the platform
+      // to non-nacl/pepper should make loading fail.
+      string projectUniqueName = @"DummyLoop\DummyLoop.vcxproj";
+      object[] startupProj = { projectUniqueName };
+      dte_.Solution.SolutionBuild.StartupProjects = startupProj;
+      TestUtilities.SetSolutionConfiguration(dte_, projectUniqueName, "Debug", "Win32");
+      Assert.IsFalse(target.LoadProjectSettings());
+      Assert.IsFalse(target.isProperlyInitialized_);
+
+      // Setting the platform to NaCl should make loading succeed.
+      TestUtilities.SetSolutionConfiguration(
+          dte_, projectUniqueName, "Debug", Strings.NaClPlatformName);
+      Assert.IsTrue(target.LoadProjectSettings());
+      Assert.IsTrue(target.isProperlyInitialized_);
+      Assert.AreEqual(
+          target.projectPlatformType_,
+          PluginDebuggerHelper_Accessor.ProjectPlatformType.NaCl);
+      Assert.AreEqual(
+          target.pluginProjectDirectory_,
+          TestContext.DeploymentDirectory + @"\DummyLoop\DummyLoop\");
+      Assert.AreEqual(
+          target.pluginAssembly_,
+          TestContext.DeploymentDirectory + @"\DummyLoop\DummyLoop\NaCl\Debug\DummyLoop.nexe");
+      Assert.AreEqual(
+          target.pluginOutputDirectory_,
+          TestContext.DeploymentDirectory + @"\DummyLoop\DummyLoop\NaCl\Debug\");
+      Assert.AreEqual(target.sdkRootDirectory_, expectedSDKRootDir);
+      Assert.AreEqual(target.webServerExecutable_, "python.exe");
+      ////Assert.AreEqual(target._webServerArguments, "");

[binji, 2012/07/20 00:24:53]

Remove commented code.

[tysand, 2012/08/07 23:01:54]

Done.

+      ////Assert.AreEqual(target._gdbPath, "");
+
+      // Setting platform to Pepper should make succeed.
+      TestUtilities.SetSolutionConfiguration(
+          dte_, projectUniqueName, "Debug", Strings.PepperPlatformName);
+      Assert.IsTrue(target.LoadProjectSettings());
+      Assert.IsTrue(target.isProperlyInitialized_);
+      Assert.AreEqual(
+          target.projectPlatformType_,
+          PluginDebuggerHelper_Accessor.ProjectPlatformType.Pepper);
+      Assert.AreEqual(
+          target.pluginProjectDirectory_,
+          TestContext.DeploymentDirectory + @"\DummyLoop\DummyLoop\");
+      Assert.AreEqual(
+          target.pluginAssembly_,
+          TestContext.DeploymentDirectory + @"\DummyLoop\Debug\PPAPI\DummyLoop.dll");
+      Assert.AreEqual(
+          target.pluginOutputDirectory_,
+          TestContext.DeploymentDirectory + @"\DummyLoop\Debug\PPAPI\");
+      Assert.AreEqual(target.sdkRootDirectory_, expectedSDKRootDir);
+      Assert.AreEqual(target.webServerExecutable_, "python.exe");
+      ////Assert.AreEqual(target._webServerArguments, "");
+      ////Assert.AreEqual(target._gdbPath, "");
+    }
+
+    /// <summary>
+    /// Checks that VS properly attaches debugger.
+    /// </summary>
+    [TestMethod]
+    [DeploymentItem("NativeClientVSAddIn.dll")]
+    public void AttachVSDebuggerTest()
+    {
+      using (Process dummyProc = TestUtilities.StartProcessForKilling("DummyProc", 20))
+      {
+        try
+        {
+          PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+          target.projectPlatformType_ = PluginDebuggerHelper_Accessor.ProjectPlatformType.Pepper;
+          target.isProperlyInitialized_ = true;
+
+          target.AttachVSDebugger(
+              null,
+              new NativeClientVSAddIn.PluginDebuggerHelper.PluginFoundEventArgs((uint)dummyProc.Id));

[binji, 2012/07/20 00:24:53]

nit: wrap at 100 chars

[tysand, 2012/08/07 23:01:54]

Done.

+
+          bool isBeingDebugged = false;
+          foreach (EnvDTE.Process proc in dte_.Debugger.DebuggedProcesses)
+          {
+            if (proc.ProcessID == dummyProc.Id)
+            {
+              isBeingDebugged = true;
+            }
+          }
+
+          Assert.IsTrue(isBeingDebugged, "Visual Studio debugger did not attach");
+        }
+        finally
+        {
+          if (dummyProc != null && !dummyProc.HasExited)
+          {
+            dummyProc.Kill();
+            dummyProc.Dispose();

[binji, 2012/07/20 00:24:53]

dispose is unnecessary because of using above, right?

[tysand, 2012/08/07 23:01:54]

Done.

+          }
+        }
+      }
+    }
+
+    /// <summary>
+    /// A test for StartDebugging.
+    /// </summary>
+    [TestMethod]
+    public void StartDebuggingTest()

[binji, 2012/07/20 00:24:53]

I don't understand what this is testing. It looks like it is just checking to
see if the pluginFinderTimer fires -- is that the only observable result from
calling StartDebugging?

[tysand, 2012/08/07 23:01:54]

Done.

+    {
+      PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+
+      // Neutralize StartWebServer by providing dummy executable settings.
+      target.webServerExecutable_ = "python.exe";
+      target.webServerArguments_ = "-c \"print 'test'\"";
+      target.pluginProjectDirectory_ = TestContext.DeploymentDirectory;
+
+      // Have the timer call a function to set success to true.
+      ManualResetEvent finderSuccess = new ManualResetEvent(false);
+      target.pluginFinderTimer_ = new System.Windows.Forms.Timer();
+      target.pluginFinderTimer_.Tick += (a, b) => { finderSuccess.Set(); };
+
+      // Check that an exception is thrown if not initialized properly.
+      target.isProperlyInitialized_ = false;
+      try
+      {
+        target.StartDebugging();
+        Assert.Fail("Debugging started when not initialized");
+      }
+      catch (Exception)
+      {
+        // Expected in a proper implementation.
+      }
+
+      // Properly start debugging and wait for event signal.
+      target.isProperlyInitialized_ = true;
+      target.StartDebugging();
+
+      // Pump events waiting for signal, time-out after 10 seconds.
+      bool success = false;
+      for (int i = 0; i < 20; i++)
+      {
+        System.Windows.Forms.Application.DoEvents();
+        if (finderSuccess.WaitOne(500))
+        {
+          success = true;
+          break;
+        }
+      }
+
+      Assert.IsTrue(success, "Plug-in finder timer did not fire");
+    }
+
+    /// <summary>
+    /// This tests that StartWebServer executes webServerExecutable_ with webServerArguments_
+    /// as arguments, sets the working directory to the project directory, and hooks
+    /// up stdout and stderr from the web server to the Web Server output panel in VS.
+    /// This test implicitly covers WebServerMessageReceive.
+    /// </summary>
+    [TestMethod]
+    [DeploymentItem("NativeClientVSAddIn.dll")]
+    public void StartWebServerTest()
+    {
+      PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+      try
+      {
+        string successMessage = "successful test!";
+        string stderrMessage = "stderr test";
+        target.webServerExecutable_ = "python.exe";
+
+        // To save pain, if modifying this in the future avoid special characters,
+        // or make sure to double escape them. Ex: \n --> \\n.
+        string program =
+          "import os;" +
+          "import sys;" +
+          string.Format("sys.stdout.write('{0}');", successMessage) +
+          string.Format("sys.stderr.write('{0}');", stderrMessage) +
+          "sys.stdout.write(os.getcwd());" +
+          "sys.stdout.flush();" +
+          "sys.stderr.flush()";
+        target.webServerArguments_ = string.Format("-c \"{0}\"", program);
+        target.pluginProjectDirectory_ = TestContext.DeploymentDirectory;
+        target.isProperlyInitialized_ = true;
+        target.StartWebServer();
+
+        // Check that the output pane exists.
+        EnvDTE.OutputWindowPane window = dte_.ToolWindows.OutputWindow.OutputWindowPanes.Item(
+          Strings.WebServerOutputWindowTitle);
+        Assert.IsNotNull(window, "Web server output pane failed to create");
+
+        // Wait for results to arrive for up to 10 seconds, checking every 0.5 seconds.
+        string result = TestUtilities.GetPaneText(target.webServerOutputPane_);

[binji, 2012/07/20 00:24:53]

move this inside the for loop, remove the duplicated code at the end of the loop

[tysand, 2012/08/07 23:01:54]

Done.

+        for (int repeat = 0; repeat < 20; repeat++)
+        {
+          if (result != null &&
+              result.Contains(successMessage) &&
+              result.Contains(stderrMessage) &&
+              result.Contains(TestContext.DeploymentDirectory))
+          {
+            break;
+          }
+
+          Thread.Sleep(500);
+          result = TestUtilities.GetPaneText(target.webServerOutputPane_);
+        }
+
+        Assert.IsFalse(string.IsNullOrEmpty(result), "Nothing printed to output pane");
+        StringAssert.Contains(
+            result,
+            successMessage,
+            "Executable did not successfully run given arguments");
+        StringAssert.Contains(
+            result,
+            TestContext.DeploymentDirectory,
+            "Web server working directory was not set to project directory");
+        StringAssert.Contains(result, stderrMessage, "Standard error message was not captured");
+      }
+      finally
+      {
+        if (!target.webServer_.WaitForExit(1000))
+        {
+          target.webServer_.Kill();
+          target.webServer_.Dispose();
+        }
+      }
+    }
+
+    /// <summary>
+    /// Ensures that StopDebugging() kills GDB and the web server, and resets the state of
+    /// PluginDebuggerHelper to before debugging started.
+    /// Implicitly tests KillGDBProcess().
+    /// </summary>
+    [TestMethod]
+    public void StopDebuggingTest()
+    {
+      PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+      string webServerIdentifier = "StartVisualStudioInstance_TestWebServer";
+      string gdbIdentifier = "StartVisualStudioInstance_TestGDB";
+
+      // Set up items that should exist given a successful calling of StartDebugging().
+      target.gdbInitFileName_ = Path.GetTempFileName();
+      target.pluginFinderForbiddenPids_.Add(123);

[binji, 2012/07/20 00:24:53]

what is 123?

[tysand, 2012/08/07 23:01:54]

Done.

+      target.webServer_ = TestUtilities.StartProcessForKilling(webServerIdentifier, 20);
+      target.gdbProcess_ = TestUtilities.StartProcessForKilling(gdbIdentifier, 20);
+      target.isProperlyInitialized_ = true;
+
+      target.StopDebugging();
+
+      Assert.IsFalse(target.isProperlyInitialized_, "Failed to set initialized state to false");
+      Assert.IsFalse(target.pluginFinderTimer_.Enabled, "Plug-in finder timer not stopped");
+      Assert.IsFalse(
+          TestUtilities.DoesProcessExist("python.exe", webServerIdentifier),
+          "Failed to kill web server process");
+      Assert.IsFalse(
+          TestUtilities.DoesProcessExist("python.exe", gdbIdentifier),
+          "Failed to kill gdb process");
+      Assert.IsFalse(
+          File.Exists(target.gdbInitFileName_),
+          "Failed to delete temp gdb init file");
+      Assert.IsTrue(
+          target.pluginFinderForbiddenPids_.Count == 0,
+          "Plugin finder Process IDs not cleared");
+    }
+
+    /// <summary>
+    /// A test for WebServerWriteLine.
+    /// </summary>
+    [TestMethod]
+    [DeploymentItem("NativeClientVSAddIn.dll")]
+    public void WebServerWriteLineTest()
+    {
+      PluginDebuggerHelper_Accessor target = new PluginDebuggerHelper_Accessor(dte_);
+      string successMessage = "successful test!";
+      target.webServerOutputPane_ = dte_.ToolWindows.OutputWindow.OutputWindowPanes.Add(
+          Strings.WebServerOutputWindowTitle);
+      target.isProperlyInitialized_ = true;
+      target.WebServerWriteLine(successMessage);
+      string result = TestUtilities.GetPaneText(target.webServerOutputPane_);

[binji, 2012/07/20 00:24:53]

same as above, move inside loop, etc.

[tysand, 2012/08/07 23:01:54]

Done.

+
+      // Wait for results to arrive for up to 10 seconds, checking every 0.5 seconds.
+      for (int repeat = 0; repeat < 20; repeat++)
+      {
+        if (result != null &&
+            result.Contains(successMessage))

[binji, 2012/07/20 00:24:53]

nit: looks like this should fit on the previous line

[tysand, 2012/08/07 23:01:54]

Done.

+        {
+          break;
+        }
+
+        Thread.Sleep(500);
+        result = TestUtilities.GetPaneText(target.webServerOutputPane_);
+      }
+
+      StringAssert.Contains(result, successMessage, "Message failed to print");
+    }
+  }
+}