add one more error message to cover test case failed on macos

Author: VeryEarly

src/Websites/Websites.Test/ScenarioTests/WebAppTests.ps1

@@ -711,6 +711,7 @@ function Test-WindowsContainerCanIssueWebAppPSSession
 			$messageUnavailable = "Connecting to remote server $wname.azurewebsites.net failed with the following error message : The WinRM client sent a request to an HTTP server and got a response saying the requested HTTP URL was not available."
 			$messagePsVersionNotSupported = "Remote Powershell sessions into Windows Containers on App Service from this version of PowerShell is not supported.";
 			$messageMIResulFailed = "Connecting to remote server $wname.azurewebsites.net failed with the following error message : MI_RESULT_FAILED";
+			$messageWSManNotInstalled = "This parameter set requires WSMan, and no supported WSMan client library was found. WSMan is either not installed or unavailable for this system";
 
 			# One possible warning message in Playback mode.
 			$messageWSMANNotConfigured = "Your current WSMAN Trusted Hosts settings will prevent you from connecting to your Container Web App";
@@ -719,14 +720,17 @@ function Test-WindowsContainerCanIssueWebAppPSSession
 				($Error[0] -like "*$($messageUnavailable)*") -or 
 				($Error[0] -like "*$($messageWSMANNotConfigured)*") -or
 				($Error[0] -like "*$($messagePsVersionNotSupported)*") -or
-				($Error[0] -like "*$($messageMIResulFailed)*")
+				($Error[0] -like "*$($messageMIResulFailed)*") -or
+				($Error[0] -like "*$($messageWSManNotInstalled)*")
 
 			$resultWarning = ($wv[0] -like "*$($messageWSMANNotConfigured)*")
 
 			Write-Debug "Expected error message 1: $messageDNS"
 			Write-Debug "Expected error message 2: $messageUnavailable"
 			Write-Debug "Expected error message 3: $messagePsVersionNotSupported"
-			
+			Write-Debug "Expected error message 4: $messageMIResulFailed"
+			Write-Debug "Expected error message 5: $messageWSManNotInstalled"
+
 			Write-Debug "Expected Warning message 1: $messageWSMANNotConfigured"