remove Validate and use Guard

src/Adapter/MSTestAdapter.PlatformServices/Utilities/DeploymentUtilityBase.cs

@@ -128,10 +128,10 @@ public static string GetTestResultsDirectory(IRunContext? runContext) => !String
     /// <returns>Returns a list of deployment warnings.</returns>
     protected IEnumerable<string> Deploy(IList<DeploymentItem> deploymentItems, string testSource, string deploymentDirectory, string resultsDirectory)
     {
-        Validate.IsFalse(StringEx.IsNullOrWhiteSpace(deploymentDirectory), "Deployment directory is null or empty");
-        Validate.IsTrue(FileUtility.DoesDirectoryExist(deploymentDirectory), $"Deployment directory {deploymentDirectory} does not exist");
-        Validate.IsFalse(StringEx.IsNullOrWhiteSpace(testSource), "TestSource directory is null/empty");
-        Validate.IsTrue(FileUtility.DoesFileExist(testSource), $"TestSource {testSource} does not exist.");
+        Guard.NotNullOrWhiteSpace(deploymentDirectory);
+        Guard.NotNullOrWhiteSpace(testSource);
+        ApplicationStateGuard.Ensure(FileUtility.DoesDirectoryExist(deploymentDirectory), $"Deployment directory {deploymentDirectory} does not exist");
+        ApplicationStateGuard.Ensure(FileUtility.DoesFileExist(testSource), $"TestSource {testSource} does not exist.");
 
         testSource = Path.GetFullPath(testSource);
         var warnings = new List<string>();

src/Adapter/MSTestAdapter.PlatformServices/Utilities/FileUtility.cs

@@ -234,7 +234,7 @@ public static string TryConvertPathToRelative(string path, string rootDir)
     [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "Requirement is to handle all kinds of user exceptions and message appropriately.")]
     public virtual void DeleteDirectories(string filePath)
     {
-        Validate.IsFalse(StringEx.IsNullOrWhiteSpace(filePath), "Invalid filePath provided");
+        Guard.NotNullOrWhiteSpace(filePath);
         try
         {
             var root = new DirectoryInfo(filePath);