fixed reading test adapter paths from runsettings

src/Microsoft.TestPlatform.Client/TestPlatform.cs

@@ -4,11 +4,15 @@
 namespace Microsoft.VisualStudio.TestPlatform.Client
 {
     using System;
+    using System.IO;
     using System.Collections.Generic;
 
     using Microsoft.VisualStudio.TestPlatform.Client.Discovery;
     using Microsoft.VisualStudio.TestPlatform.Client.Execution;
+    using Microsoft.VisualStudio.TestPlatform.Common;
+    using Microsoft.VisualStudio.TestPlatform.Common.Utilities;
     using Microsoft.VisualStudio.TestPlatform.CrossPlatEngine;
+    using Microsoft.VisualStudio.TestPlatform.ObjectModel;
     using Microsoft.VisualStudio.TestPlatform.ObjectModel.Client;
     using Microsoft.VisualStudio.TestPlatform.ObjectModel.Engine;
     using Microsoft.VisualStudio.TestPlatform.ObjectModel.Utilities;
@@ -54,6 +58,8 @@ public IDiscoveryRequest CreateDiscoveryRequest(DiscoveryCriteria discoveryCrite
                 throw new ArgumentNullException("discoveryCriteria");
             }
 
+            UpdateTestAdapterPaths(discoveryCriteria.RunSettings);
+
             var runconfiguration = XmlRunSettingsUtilities.GetRunConfigurationNode(discoveryCriteria.RunSettings);
             var testHostManager = this.TestEngine.GetDefaultTestHostManager(runconfiguration);
 
@@ -76,6 +82,8 @@ public ITestRunRequest CreateTestRunRequest(TestRunCriteria testRunCriteria)
                 throw new ArgumentNullException("testRunCriteria");
             }
 
+            UpdateTestAdapterPaths(testRunCriteria.TestRunSettings);
+
             var runConfiguration = XmlRunSettingsUtilities.GetRunConfigurationNode(testRunCriteria.TestRunSettings);
             var testHostManager = this.TestEngine.GetDefaultTestHostManager(runConfiguration);
 
@@ -121,5 +129,33 @@ public void UpdateExtensions(IEnumerable<string> pathToAdditionalExtensions, boo
             this.TestEngine.GetExtensionManager()
                    .UseAdditionalExtensions(pathToAdditionalExtensions, loadOnlyWellKnownExtensions);
         }
+
+        /// <summary>
+        /// Update the test adapter paths provided through run settings to be used by the test service
+        /// </summary>
+        private void UpdateTestAdapterPaths(string runSettings)
+        {
+            IEnumerable<string> customTestAdaptersPaths = RunSettingsUtilities.GetTestAdaptersPaths(runSettings);
+
+            if (customTestAdaptersPaths != null)
+            {
+                foreach (string customTestAdaptersPath in customTestAdaptersPaths)
+                {
+                    var adapterPath = Path.GetFullPath(Environment.ExpandEnvironmentVariables(customTestAdaptersPath));
+                    if (!Directory.Exists(adapterPath))
+                    {
+                        EqtTrace.Warning(string.Format("AdapterPath Not Found:", adapterPath));
+                        continue;
+                    }
+                    List<string> adapterFiles = new List<string>(
+                        Directory.EnumerateFiles(adapterPath,TestPlatformConstants.TestAdapterPattern , SearchOption.AllDirectories)
+                        );
+                    if (adapterFiles.Count > 0)
+                    {
+                        this.UpdateExtensions(adapterFiles, false);
+                    }
+                }
+            }
+        }
     }
 }

src/Microsoft.TestPlatform.Common/Constants.cs

@@ -4,7 +4,7 @@
 namespace Microsoft.VisualStudio.TestPlatform.Common
 {
     /// <summary>
-    /// Defines the defaults/constants used across different components.
+    /// Defines the defaults used across different components.
     /// </summary>
     public static class TestPlatformDefaults
     {
@@ -38,4 +38,21 @@ public static class TestPlatformDefaults
         /// </summary>
         public const bool DefaultEnableBoundsOnLoggerEventQueue = true;
     }
+
+    /// <summary>
+    /// Defines the constants used across different components.
+    /// </summary>
+    public static class TestPlatformConstants
+    {
+        /// <summary>
+        /// string pattern used to find the test adapters
+        /// </summary>
+        public const string TestAdapterPattern = @"*.TestAdapter.dll";
+
+        /// <summary>
+        /// Regex pattern used to find the test adapters
+        /// </summary>
+        public const string TestAdapterRedexPattern = @".*.TestAdapter.dll";
+
+    }
 }

src/Microsoft.TestPlatform.Common/Utilities/RunSettingsUtilities.cs

@@ -4,6 +4,8 @@
 namespace Microsoft.VisualStudio.TestPlatform.Common.Utilities
 {
     using System;
+    using System.Collections.Generic;
+    using System.Linq;
     using Microsoft.VisualStudio.TestPlatform.ObjectModel;
     using Microsoft.VisualStudio.TestPlatform.ObjectModel.Utilities;
 
@@ -112,5 +114,27 @@ public static int GetMaxCpuCount(RunConfiguration runConfiguration)
             return cpuCount;
         }
 
+        /// <summary>
+        /// Gets the test adapters path from the run configuration
+        /// </summary>
+        /// <param name="runSettings">Test run settings</param>
+        /// <param name="returnNullIfNotSet">True to return null, if adapter paths is not set.</param>
+        /// <returns>Test adapters paths</returns>
+        public static IEnumerable<string> GetTestAdaptersPaths(string runSettings)
+        {
+            var runConfiguration = XmlRunSettingsUtilities.GetRunConfigurationNode(runSettings);
+
+            IEnumerable<string> testAdaptersPaths = Enumerable.Empty<string>();
+            if (runConfiguration != null)
+            {
+                if (runConfiguration.TestAdaptersPathsSet)
+                {
+                    testAdaptersPaths = runConfiguration.TestAdaptersPaths.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
+                }
+            }
+
+            return testAdaptersPaths;
+        }
+
     }
 }

src/Microsoft.TestPlatform.CrossPlatEngine/Hosting/DotnetTestHostManager.cs

@@ -10,6 +10,7 @@ namespace Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Hosting
     using System.Linq;
 
     using Microsoft.Extensions.DependencyModel;
+    using Microsoft.VisualStudio.TestPlatform.Common;
     using Microsoft.VisualStudio.TestPlatform.Common.Logging;
     using Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Resources;
     using Microsoft.VisualStudio.TestPlatform.CrossPlatEngine.Helpers;
@@ -191,7 +192,7 @@ public IEnumerable<string> GetTestPlatformExtensions(IEnumerable<string> sources
 
             if (!string.IsNullOrEmpty(sourceDirectory) && this.fileHelper.DirectoryExists(sourceDirectory))
             {
-                return this.fileHelper.EnumerateFiles(sourceDirectory, ".*.TestAdapter.dll", SearchOption.TopDirectoryOnly);
+                return this.fileHelper.EnumerateFiles(sourceDirectory, TestPlatformConstants.TestAdapterRedexPattern, SearchOption.TopDirectoryOnly);
             }
 
             return Enumerable.Empty<string>();

src/vstest.console/Processors/TestAdapterPathArgumentProcessor.cs

@@ -9,6 +9,7 @@ namespace Microsoft.VisualStudio.TestPlatform.CommandLine.Processors
     using System.Globalization;
     using System.IO;
 
+    using Microsoft.VisualStudio.TestPlatform.Common;
     using Microsoft.VisualStudio.TestPlatform.Client;
     using Microsoft.VisualStudio.TestPlatform.ObjectModel.Client;
     using Microsoft.VisualStudio.TestPlatform.Utilities;
@@ -195,7 +196,7 @@ public ArgumentProcessorResult Execute()
         /// <returns> The list of test adapter assemblies. </returns>
         internal virtual IEnumerable<string> GetTestAdaptersFromDirectory(string directory)
         {
-            return Directory.EnumerateFiles(directory, @"*.TestAdapter.dll", SearchOption.AllDirectories);
+            return Directory.EnumerateFiles(directory, TestPlatformConstants.TestAdapterPattern, SearchOption.AllDirectories);
         }
 
         #endregion

test/Microsoft.TestPlatform.AcceptanceTests/RunsettingsTests.cs

@@ -217,8 +217,6 @@ public void RunSettingsWithParallelAndPlatformX64(string runnerFramework, string
             this.RunTestWithRunSettings(runConfigurationDictionary, null, null, testhostProcessName, expectedProcessCreated);
         }
 
-        // Known issue https://github.com/Microsoft/vstest/issues/135
-        [Ignore]
         [CustomDataTestMethod]
         [NET46TargetFramework]
         [NETCORETargetFramework]

test/Microsoft.TestPlatform.Common.UnitTests/Utilities/RunSettingsUtilitiesTests.cs

@@ -10,6 +10,8 @@ namespace TestPlatform.Common.UnitTests.Utilities
     using Microsoft.VisualStudio.TestPlatform.ObjectModel.Adapter;
     using System.Xml;
     using ExtensionFramework;
+    using System.Collections.Generic;
+
     [TestClass]
     public class RunSettingsUtilitiesTests
     {
@@ -93,6 +95,17 @@ public void GetMaxCpuCountWithInvalidCpuCountShouldReturnDefaultCpuCount()
 
             Assert.AreEqual(expectedResult, result);
         }
+
+        [TestMethod]
+        public void GetTestAdaptersPaths()
+        {
+            string settingXml = @"<RunSettings><RunConfiguration><TestAdaptersPaths>C:\testadapterpath;D:\secondtestadapterpath</TestAdaptersPaths></RunConfiguration ></RunSettings>";
+            string[] expectedResult = new string[] { @"C:\testadapterpath", @"D:\secondtestadapterpath" };
+
+            string[] result = (string[])RunSettingsUtilities.GetTestAdaptersPaths(settingXml);
+
+            CollectionAssert.AreEqual(expectedResult, result);
+        }
     }
 
     [SettingsName("DummyMSTest")]