Refactor UpdateInstall.ps1 script to download and install individually

data/wsl/UpdateInstall.ps1

@@ -22,7 +22,7 @@ $SearchResult = $Searcher.Search("IsInstalled=0")
 # Check if updates are available
 if ($SearchResult.Updates.Count -eq 0) {
     LogMessage "No updates found." -Color "Yellow"
-    return
+    return 0
 }
 
 # Display updates found
@@ -48,9 +48,11 @@ foreach ($Update in $UpdatesToInstall) {
             LogMessage "Downloaded: $($Update.Title) successfully." -Color "Green"
         } else {
             LogMessage "Download failed for: $($Update.Title)" -Color "Yellow"
+            return 1
         }
     } catch {
         LogMessage "Error downloading $($Update.Title): $_" -Color "Red"
+        return 1
     }
 }
 
@@ -69,11 +71,14 @@ foreach ($Update in $UpdatesToInstall) {
             LogMessage "Successfully installed: $($Update.Title)" -Color "Green"
         } else {
             LogMessage "Installation failed for: $($Update.Title). Result code: $($InstallResult.ResultCode)" -Color "Yellow"
+            return 1
         }
     } catch {
         LogMessage "Error occurred during installation of $($Update.Title): $_" -Color "Red"
+        return 1
     }
 }
 
 # Completion message
-LogMessage "Windows Update process completed."
+LogMessage "Windows Update process completed."
+return 0

tests/wsl/install/update_windows.pm

@@ -20,7 +20,7 @@ sub run {
         cmd => 'cd \\; $port.WriteLine($(.\\UpdateInstall.ps1))',
         code => sub {
             die("Update script finished unespectedly or timed out...")
-              unless wait_serial("Windows Update process completed.", timeout => 3600);
+              unless wait_serial('0', timeout => 3600);
         }
     );
     save_screenshot;