Fix for changes in XPathNavigator for netcoreapp2.0

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

@@ -109,10 +109,8 @@ private static string AddDefaultRunSettings(string runSettings)
                 var document = new XmlDocument();
                 document.Load(reader);
 
-                var navigator = document.CreateNavigator();
-
-                InferRunSettingsHelper.UpdateRunSettingsWithUserProvidedSwitches(navigator, architecture, framework, defaultResultsDirectory);
-                return navigator.OuterXml;
+                InferRunSettingsHelper.UpdateRunSettingsWithUserProvidedSwitches(document, architecture, framework, defaultResultsDirectory);
+                return document.OuterXml;
             }
         }
 

src/Microsoft.TestPlatform.ObjectModel/Utilities/XmlRunSettingsUtilities.cs

@@ -186,7 +186,7 @@ public static Dictionary<string, object> GetTestRunParameters(string settingsXml
         /// </returns>
         [SuppressMessage("Microsoft.Security.Xml", "CA3053:UseXmlSecureResolver",
             Justification = "XmlReaderSettings.XmlResolver is not available in core. Suppress until fxcop issue is fixed.")]
-        public static IXPathNavigable CreateDefaultRunSettings()
+        public static XmlDocument CreateDefaultRunSettings()
         {
             // Create a new default xml doc that looks like this:
             // <?xml version="1.0" encoding="utf-8"?>
@@ -209,11 +209,7 @@ public static IXPathNavigable CreateDefaultRunSettings()
             var dataCollectorsNode = doc.CreateElement(Constants.DataCollectorsSettingName);
             dataCollectionRunSettingsNode.AppendChild(dataCollectorsNode);
 
-#if NET451
             return doc;
-#else
-            return doc.ToXPathNavigable();
-#endif
         }
 
         /// <summary>

src/Microsoft.TestPlatform.Utilities/InferRunSettingsHelper.cs

@@ -69,7 +69,7 @@ public static string MakeRunsettingsCompatible(string runsettingsXml)
                     {
                         EqtTrace.Error("InferRunSettingsHelper.MakeRunsettingsCompatible: Unable to navigate to RunConfiguration. Current node: " + runSettingsNavigator.LocalName);
                     }
-                    else if(runSettingsNavigator.HasChildren)
+                    else if (runSettingsNavigator.HasChildren)
                     {
                         var listOfInValidRunConfigurationSettings = new List<string>();
 
@@ -90,7 +90,7 @@ public static string MakeRunsettingsCompatible(string runsettingsXml)
                         runSettingsNavigator.MoveToFirstChild();
                         do
                         {
-                            if(!listOfValidRunConfigurationSettings.Contains(runSettingsNavigator.LocalName))
+                            if (!listOfValidRunConfigurationSettings.Contains(runSettingsNavigator.LocalName))
                             {
                                 listOfInValidRunConfigurationSettings.Add(runSettingsNavigator.LocalName);
                             }
@@ -100,7 +100,7 @@ public static string MakeRunsettingsCompatible(string runsettingsXml)
                         // Delete all invalid RunConfiguration Settings
                         if (listOfInValidRunConfigurationSettings.Count > 0)
                         {
-                            if(EqtTrace.IsWarningEnabled)
+                            if (EqtTrace.IsWarningEnabled)
                             {
                                 string settingsName = string.Join(", ", listOfInValidRunConfigurationSettings);
                                 EqtTrace.Warning(string.Format("InferRunSettingsHelper.MakeRunsettingsCompatible: Removing the following settings: {0} from RunSettings file. To use those settings please move to latest version of Microsoft.NET.Test.Sdk", settingsName));
@@ -109,7 +109,7 @@ public static string MakeRunsettingsCompatible(string runsettingsXml)
                             // move navigator to RunConfiguration node
                             runSettingsNavigator.MoveToParent();
 
-                            foreach(var s in listOfInValidRunConfigurationSettings)
+                            foreach (var s in listOfInValidRunConfigurationSettings)
                             {
                                 var nodePath = RunConfigurationNodePath + "/" + s;
                                 XmlUtilities.RemoveChildNode(runSettingsNavigator, nodePath, s);
@@ -129,12 +129,14 @@ public static string MakeRunsettingsCompatible(string runsettingsXml)
         /// <summary>
         /// Updates the run settings XML with the specified values.
         /// </summary>
-        /// <param name="runSettingsNavigator"> The navigator of the XML. </param>
-        /// <param name="architecture"> The architecture. </param>
-        /// <param name="framework"> The framework. </param>
-        /// <param name="resultsDirectory"> The results directory. </param>
-        public static void UpdateRunSettingsWithUserProvidedSwitches(XPathNavigator runSettingsNavigator, Architecture architecture, Framework framework, string resultsDirectory)
+        /// <param name="runSettingsDocument">XmlDocument of runsettings xml. </param>
+        /// <param name="architecture">The architecture. </param>
+        /// <param name="framework">The framework. </param>
+        /// <param name="resultsDirectory">The results directory. </param>
+        public static void UpdateRunSettingsWithUserProvidedSwitches(XmlDocument runSettingsDocument, Architecture architecture, Framework framework, string resultsDirectory)
         {
+            var runSettingsNavigator = runSettingsDocument.CreateNavigator();
+
             ValidateRunConfiguration(runSettingsNavigator);
 
             // when runsettings specifies platform, that takes precedence over the user specified platform via command line arguments.
@@ -164,67 +166,65 @@ public static void UpdateRunSettingsWithUserProvidedSwitches(XPathNavigator runS
             VerifyCompatibilityWithOSArchitecture(architecture);
 
             // Check if inputRunSettings has results directory configured.
-            var hasResultsDirectory = runSettingsNavigator.SelectSingleNode(ResultsDirectoryNodePath) != null;
+            var hasResultsDirectory = runSettingsDocument.SelectSingleNode(ResultsDirectoryNodePath) != null;
 
             // Regenerate the effective settings.
             if (shouldUpdatePlatform || shouldUpdateFramework || !hasResultsDirectory)
             {
-                UpdateRunConfiguration(runSettingsNavigator, architecture, framework, resultsDirectory);
+                UpdateRunConfiguration(runSettingsDocument, architecture, framework, resultsDirectory);
             }
-
-            runSettingsNavigator.MoveToRoot();
         }
 
         /// <summary>
         /// Updates the <c>RunConfiguration.DesignMode</c> value for a run settings. Doesn't do anything if the value is already set.
         /// </summary>
-        /// <param name="runSettingsNavigator">Navigator for runsettings xml</param>
+        /// <param name="runSettingsDocument">XmlDocument for runsettings xml</param>
         /// <param name="designModeValue">Value to set</param>
-        public static void UpdateDesignMode(XPathNavigator runSettingsNavigator, bool designModeValue)
+        public static void UpdateDesignMode(XmlDocument runSettingsDocument, bool designModeValue)
         {
-            AddNodeIfNotPresent<bool>(runSettingsNavigator, DesignModeNodePath, DesignModeNodeName, designModeValue);
+            AddNodeIfNotPresent<bool>(runSettingsDocument, DesignModeNodePath, DesignModeNodeName, designModeValue);
         }
 
         /// <summary>
         /// Updates the <c>RunConfiguration.CollectSourceInformation</c> value for a run settings. Doesn't do anything if the value is already set.
         /// </summary>
-        /// <param name="runSettingsNavigator">Navigator for runsettings xml</param>
+        /// <param name="runSettingsDocument">XmlDocument for runsettings xml</param>
         /// <param name="collectSourceInformationValue">Value to set</param>
-        public static void UpdateCollectSourceInformation(XPathNavigator runSettingsNavigator, bool collectSourceInformationValue)
+        public static void UpdateCollectSourceInformation(XmlDocument runSettingsDocument, bool collectSourceInformationValue)
         {
-            AddNodeIfNotPresent<bool>(runSettingsNavigator, CollectSourceInformationNodePath, CollectSourceInformationNodeName, collectSourceInformationValue);
+            AddNodeIfNotPresent<bool>(runSettingsDocument, CollectSourceInformationNodePath, CollectSourceInformationNodeName, collectSourceInformationValue);
         }
 
         /// <summary>
         /// Updates the <c>RunConfiguration.TargetDevice</c> value for a run settings. Doesn't do anything if the value is already set.
         /// </summary>
-        /// <param name="runSettingsNavigator">Navigator for runsettings xml</param>
+        /// <param name="runSettingsDocument">XmlDocument for runsettings xml</param>
         /// <param name="targetDevice">Value to set</param>
-        public static void UpdateTargetDevice(XPathNavigator runSettingsNavigator, string targetDevice)
+        public static void UpdateTargetDevice(XmlDocument runSettingsDocument, string targetDevice)
         {
-            AddNodeIfNotPresent<string>(runSettingsNavigator, TargetDeviceNodePath, TargetDevice, targetDevice);
+            AddNodeIfNotPresent<string>(runSettingsDocument, TargetDeviceNodePath, TargetDevice, targetDevice);
         }
 
         /// <summary>
         /// Updates the <c>RunConfiguration.TargetFrameworkVersion</c> value for a run settings. if the value is already set, behavior depends on overwrite.
         /// </summary>
-        /// <param name="runSettingsNavigator">Navigator for runsettings xml</param>
+        /// <param name="runSettingsDocument">XmlDocument for runsettings xml</param>
         /// <param name="framework">Value to set</param>
         /// <param name="overwrite">Overwrite option.</param>
-        public static void UpdateTargetFramework(XPathNavigator runSettingsNavigator, string framework, bool overwrite=false)
+        public static void UpdateTargetFramework(XmlDocument runSettingsDocument, string framework, bool overwrite = false)
         {
-            AddNodeIfNotPresent<string>(runSettingsNavigator, TargetFrameworkNodePath, TargetFrameworkNodeName, framework, overwrite);
+            AddNodeIfNotPresent<string>(runSettingsDocument, TargetFrameworkNodePath, TargetFrameworkNodeName, framework, overwrite);
         }
 
         /// <summary>
         /// Updates the <c>RunConfiguration.TargetPlatform</c> value for a run settings. if the value is already set, behavior depends on overwrite.
         /// </summary>
-        /// <param name="runSettingsNavigator">Navigator for runsettings xml</param>
+        /// <param name="runSettingsDocument">XmlDocument for runsettings xml</param>
         /// <param name="platform">Value to set</param>
         /// <param name="overwrite">Overwrite option.</param>
-        public static void UpdateTargetPlatform(XPathNavigator runSettingsNavigator, string platform, bool overwrite = false)
+        public static void UpdateTargetPlatform(XmlDocument runSettingsDocument, string platform, bool overwrite = false)
         {
-            AddNodeIfNotPresent<string>(runSettingsNavigator, TargetPlatformNodePath, TargetPlatformNodeName, platform, overwrite);
+            AddNodeIfNotPresent<string>(runSettingsDocument, TargetPlatformNodePath, TargetPlatformNodeName, platform, overwrite);
         }
 
         public static bool TryGetDeviceXml(XPathNavigator runSettingsNavigator, out String deviceXml)
@@ -267,7 +267,7 @@ public static bool IsTestSettingsEnabled(string runsettingsXml)
                     }
 
                     var node = runSettingsNavigator.SelectSingleNode(@"/RunSettings/MSTest/SettingsFile");
-                    if(node != null && !string.IsNullOrEmpty(node.InnerXml))
+                    if (node != null && !string.IsNullOrEmpty(node.InnerXml))
                     {
                         return true;
                     }
@@ -280,21 +280,21 @@ public static bool IsTestSettingsEnabled(string runsettingsXml)
         /// <summary>
         /// Adds node under RunConfiguration setting. Noop if node is already present.
         /// </summary>
-        private static void AddNodeIfNotPresent<T>(XPathNavigator runSettingsNavigator, string nodePath, string nodeName, T nodeValue, bool overwrite = false)
+        private static void AddNodeIfNotPresent<T>(XmlDocument xmlDocument, string nodePath, string nodeName, T nodeValue, bool overwrite = false)
         {
             // Navigator should be at Root of runsettings xml, attempt to move to /RunSettings/RunConfiguration
-            if (!runSettingsNavigator.MoveToChild(RunSettingsNodeName, string.Empty) ||
-                !runSettingsNavigator.MoveToChild(RunConfigurationNodeName, string.Empty))
+            var root = xmlDocument.DocumentElement;
+
+            if (root.SelectSingleNode(string.Format("//{0}/{1}", RunSettingsNodeName, RunConfigurationNodeName)) == null)
             {
-                EqtTrace.Error("InferRunSettingsHelper.UpdateNodeIfNotPresent: Unable to navigate to RunConfiguration. Current node: " + runSettingsNavigator.LocalName);
+                EqtTrace.Error("InferRunSettingsHelper.UpdateNodeIfNotPresent: Unable to navigate to RunConfiguration. Current node: " + xmlDocument.LocalName);
                 return;
             }
 
-            var node = runSettingsNavigator.SelectSingleNode(nodePath);
+            var node = xmlDocument.SelectSingleNode(nodePath);
             if (node == null || overwrite)
             {
-                XmlUtilities.AppendOrModifyChild(runSettingsNavigator, nodePath, nodeName, nodeValue.ToString());
-                runSettingsNavigator.MoveToRoot();
+                XmlUtilities.AppendOrModifyChild(xmlDocument, nodePath, nodeName, nodeValue.ToString());
             }
         }
 
@@ -370,26 +370,22 @@ private static void VerifyCompatibilityWithOSArchitecture(Architecture architect
         /// Regenerates the RunConfiguration node with new values under runsettings.
         /// </summary>
         private static void UpdateRunConfiguration(
-            XPathNavigator navigator,
+            XmlDocument xmlDocument,
             Architecture effectivePlatform,
             Framework effectiveFramework,
             string resultsDirectory)
         {
-            var resultsDirectoryNavigator = navigator.SelectSingleNode(ResultsDirectoryNodePath);
+            var resultsDirectoryNavigator = xmlDocument.SelectSingleNode(ResultsDirectoryNodePath);
             if (null != resultsDirectoryNavigator)
             {
                 resultsDirectory = resultsDirectoryNavigator.InnerXml;
             }
 
-            XmlUtilities.AppendOrModifyChild(navigator, RunConfigurationNodePath, RunConfigurationNodeName, null);
-            navigator.MoveToChild(RunConfigurationNodeName, string.Empty);
-
-            XmlUtilities.AppendOrModifyChild(navigator, ResultsDirectoryNodePath, ResultsDirectoryNodeName, resultsDirectory);
-
-            XmlUtilities.AppendOrModifyChild(navigator, TargetPlatformNodePath, TargetPlatformNodeName, effectivePlatform.ToString());
-            XmlUtilities.AppendOrModifyChild(navigator, TargetFrameworkNodePath, TargetFrameworkNodeName, effectiveFramework.ToString());
+            XmlUtilities.AppendOrModifyChild(xmlDocument, RunConfigurationNodePath, RunConfigurationNodeName, null);
+            XmlUtilities.AppendOrModifyChild(xmlDocument, ResultsDirectoryNodePath, ResultsDirectoryNodeName, resultsDirectory);
 
-            navigator.MoveToRoot();
+            XmlUtilities.AppendOrModifyChild(xmlDocument, TargetPlatformNodePath, TargetPlatformNodeName, effectivePlatform.ToString());
+            XmlUtilities.AppendOrModifyChild(xmlDocument, TargetFrameworkNodePath, TargetFrameworkNodeName, effectiveFramework.ToString());
         }
 
         public static bool TryGetPlatformXml(XPathNavigator runSettingsNavigator, out string platformXml)

src/Microsoft.TestPlatform.Utilities/Microsoft.TestPlatform.Utilities.csproj

@@ -20,6 +20,11 @@
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Xml" />
   </ItemGroup>
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard1.4' ">
+    <PackageReference Include="System.Xml.XPath.XmlDocument">
+      <Version>4.0.1</Version>
+    </PackageReference>
+  </ItemGroup>
   <ItemGroup>
     <Compile Update="Resources\Resources.Designer.cs">
       <DesignTime>True</DesignTime>

src/Microsoft.TestPlatform.Utilities/XmlUtilities.cs

@@ -51,12 +51,12 @@ internal static bool IsValidNodeXmlValue(string xmlNodeValue, Func<string, bool>
         [SuppressMessage("Microsoft.Security.Xml", "CA3053:UseXmlSecureResolver",
             Justification = "XmlDocument.XmlResolver is not available in core. Suppress until fxcop issue is fixed.")]
         internal static void AppendOrModifyChild(
-            XPathNavigator parentNavigator,
+            XmlDocument xmlDocument,
             string nodeXPath,
             string nodeName,
             string innerXml)
         {
-            var childNodeNavigator = parentNavigator.SelectSingleNode(nodeXPath);
+            var childNodeNavigator = xmlDocument.SelectSingleNode(nodeXPath);
 
             // Todo: There isn't an equivalent API to SecurityElement.Escape in Core yet. 
             // So trusting that the XML is always valid for now.
@@ -67,35 +67,19 @@ internal static void AppendOrModifyChild(
 #endif
             if (childNodeNavigator == null)
             {
-                var doc = new XmlDocument();
-                var childElement = doc.CreateElement(nodeName);
+                var childElement = xmlDocument.CreateElement(nodeName);
 
                 if (!string.IsNullOrEmpty(innerXml))
                 {
                     childElement.InnerXml = secureInnerXml;
                 }
 
-                childNodeNavigator = childElement.CreateNavigator();
-                parentNavigator.AppendChild(childNodeNavigator);
+                var parentNode = xmlDocument.SelectSingleNode(nodeXPath.Substring(0, nodeXPath.LastIndexOf('/')));
+                parentNode.AppendChild(childElement);
             }
             else if (!string.IsNullOrEmpty(innerXml))
             {
-#if NET451
                 childNodeNavigator.InnerXml = secureInnerXml;
-#else
-                // .Net Core has a bug where calling childNodeNavigator.InnerXml throws an XmlException with "Data at the root level is invalid".
-                // So doing the below instead.
-                var doc = new XmlDocument();
-
-                var childElement = doc.CreateElement(nodeName);
-
-                if (!string.IsNullOrEmpty(innerXml))
-                {
-                    childElement.InnerXml = secureInnerXml;
-                }
-
-                childNodeNavigator.ReplaceSelf(childElement.CreateNavigator().OuterXml);
-#endif
             }
         }
 

src/vstest.console/Processors/EnableCodeCoverageArgumentProcessor.cs

@@ -160,11 +160,7 @@ private void UpdateWithCodeCoverageSettingsIfNotConfigured()
             {
                 var document = new XmlDocument();
                 document.Load(reader);
-#if NET451
                 runSettingsDocument = document;
-#else
-                runSettingsDocument = document.ToXPathNavigable();
-#endif
             }
 
             var runSettingsNavigator = runSettingsDocument.CreateNavigator();

src/vstest.console/Processors/RunSettingsArgumentProcessor.cs

@@ -182,11 +182,7 @@ private IXPathNavigable GetRunSettingsDocument(string runSettingsFile)
                     var settingsDocument = new XmlDocument();
                     settingsDocument.Load(reader);
                     ClientUtilities.FixRelativePathsInRunSettings(settingsDocument, runSettingsFile);
-#if NET451
                     runSettingsDocument = settingsDocument;
-#else
-                    runSettingsDocument = settingsDocument.ToXPathNavigable();
-#endif
                 }
             }
             else