join some declarations

src/Microsoft.TestPlatform.AdapterUtilities/ManagedNameUtilities/ManagedNameHelper.Reflection.cs

@@ -232,10 +232,8 @@ private static void GetManagedNameAndHierarchy(MethodBase method, bool useClosed
     /// </remarks>
     public static MethodBase GetMethod(Assembly assembly, string managedTypeName, string managedMethodName)
     {
-        Type? type;
-
         var parsedManagedTypeName = ReflectionHelpers.ParseEscapedString(managedTypeName);
-        type = assembly.GetType(parsedManagedTypeName, throwOnError: false, ignoreCase: false);
+        var type = assembly.GetType(parsedManagedTypeName, throwOnError: false, ignoreCase: false);
 
         if (type == null)
         {
@@ -291,10 +289,8 @@ bool Filter(MemberInfo mbr, object? param)
             return true;
         }
 
-        MemberInfo[] methods;
-
         var bindingFlags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static;
-        methods = type.FindMembers(MemberTypes.Method, bindingFlags, Filter, null);
+        var methods = type.FindMembers(MemberTypes.Method, bindingFlags, Filter, null);
 
         return (MethodInfo?)(methods.Length switch
         {

src/Microsoft.TestPlatform.Common/ExtensionFramework/VSExtensionManager.cs

@@ -85,10 +85,7 @@ private IEnumerable<string> GetTestExtensionsInternal(string extensionType)
         var resolutionPaths = installContext.GetVisualStudioCommonLocations(vsInstallPath);
         using (var assemblyResolver = new AssemblyResolver(resolutionPaths))
         {
-            object? extensionManager;
-            object? settingsManager;
-
-            settingsManager = SettingsManagerType.GetMethod("CreateForApplication", new Type[] { typeof(string) })?.Invoke(null, new object[] { installContext.GetVisualStudioPath(vsInstallPath) });
+            var settingsManager = SettingsManagerType.GetMethod("CreateForApplication", new Type[] { typeof(string) })?.Invoke(null, new object[] { installContext.GetVisualStudioPath(vsInstallPath) });
             if (settingsManager == null)
             {
                 EqtTrace.Warning("VSExtensionManager : Unable to create settings manager");
@@ -98,7 +95,7 @@ private IEnumerable<string> GetTestExtensionsInternal(string extensionType)
             try
             {
                 // create extension manager
-                extensionManager = Activator.CreateInstance(ExtensionManagerServiceType, settingsManager);
+                var extensionManager = Activator.CreateInstance(ExtensionManagerServiceType, settingsManager);
 
                 if (extensionManager != null)
                 {

src/Microsoft.TestPlatform.Utilities/InferRunSettingsHelper.cs

@@ -665,10 +665,9 @@ public static IEnumerable<string> FilterCompatibleSources(Architecture chosenPla
             bool isSettingIncompatible = IsSettingIncompatible(actualPlatform, chosenPlatform, actualFramework, chosenFramework);
             if (isSettingIncompatible)
             {
-                string incompatiblityMessage;
                 var onlyFileName = Path.GetFileName(source);
                 // Add message for incompatible sources.
-                incompatiblityMessage = string.Format(CultureInfo.CurrentCulture, OMResources.SourceIncompatible, onlyFileName, actualFramework.Name, actualPlatform);
+                var incompatiblityMessage = string.Format(CultureInfo.CurrentCulture, OMResources.SourceIncompatible, onlyFileName, actualFramework.Name, actualPlatform);
 
                 warnings.AppendLine(incompatiblityMessage);
                 incompatiblityFound = true;

src/vstest.console/Processors/TestAdapterPathArgumentProcessor.cs

@@ -127,8 +127,6 @@ public void Initialize(string? argument)
                 string.Format(CultureInfo.CurrentCulture, CommandLineResources.TestAdapterPathValueRequired));
         }
 
-        string[] customAdaptersPath;
-
         var testAdapterPaths = new List<string>();
 
         // VSTS task add double quotes around TestAdapterpath. For example if user has given TestAdapter path C:\temp,
@@ -145,7 +143,7 @@ public void Initialize(string? argument)
         }
 
         testAdapterPaths.AddRange(SplitPaths(argument));
-        customAdaptersPath = testAdapterPaths.Distinct().ToArray();
+        var customAdaptersPath = testAdapterPaths.Distinct().ToArray();
 
         _runSettingsManager.UpdateRunSettingsNode(RunSettingsPath, string.Join(";", customAdaptersPath));
         _commandLineOptions.TestAdapterPath = customAdaptersPath;

test/Microsoft.TestPlatform.TestUtilities/IntegrationTestBase.cs

@@ -692,8 +692,6 @@ public IVsTestConsoleWrapper GetVsTestConsoleWrapper(Dictionary<string, string?>
 
         Console.WriteLine($"Console runner path: {consoleRunnerPath}");
 
-        VsTestConsoleWrapper vstestConsoleWrapper;
-
         // Providing any environment variable to vstest.console will clear all existing environment variables,
         // this works around it by copying all existing variables, and adding debug. But we only want to do that
         // when we are setting any debug variables.
@@ -717,7 +715,7 @@ public IVsTestConsoleWrapper GetVsTestConsoleWrapper(Dictionary<string, string?>
             consoleParameters.EnvironmentVariables = environmentVariables;
         }
 
-        vstestConsoleWrapper = new VsTestConsoleWrapper(consoleRunnerPath, dotnetPath, consoleParameters);
+        var vstestConsoleWrapper = new VsTestConsoleWrapper(consoleRunnerPath, dotnetPath, consoleParameters);
         vstestConsoleWrapper.StartSession();
 
         return vstestConsoleWrapper;