Add validation to prevent setting ApiVersion to Unknown in Register-PSResourceRepository

Co-authored-by: alerickson <[email protected]>

Author: Copilot

src/code/RegisterPSResourceRepository.cs

@@ -145,6 +145,14 @@ protected override void ProcessRecord()
             PSRepositoryInfo.APIVersion? repoApiVersion = null;
             if (MyInvocation.BoundParameters.ContainsKey(nameof(ApiVersion)))
             {
+                if (ApiVersion == PSRepositoryInfo.APIVersion.Unknown)
+                {
+                    ThrowTerminatingError(new ErrorRecord(
+                        new ArgumentException("ApiVersion 'Unknown' is not a valid value for Register-PSResourceRepository. Valid values are: V2, V3, Local, NugetServer, ContainerRegistry"),
+                        "InvalidApiVersion",
+                        ErrorCategory.InvalidArgument,
+                        this));
+                }
                 repoApiVersion = ApiVersion;
             }
 

test/ResourceRepositoryTests/RegisterPSResourceRepository.Tests.ps1

@@ -404,6 +404,14 @@ Describe "Test Register-PSResourceRepository" -tags 'CI' {
         $res.ApiVersion | Should -Be 'v2'
     }
 
+    It "should throw error when trying to register repository with ApiVersion unknown" {
+        {Register-PSResourceRepository -Name $TestRepoName1 -Uri $tmpDir1Path -ApiVersion "unknown" -ErrorAction Stop} | Should -Throw -ErrorId "InvalidApiVersion,Microsoft.PowerShell.PSResourceGet.Cmdlets.RegisterPSResourceRepository"
+        
+        # Verify the repository was not created
+        $repo = Get-PSResourceRepository $TestRepoName1 -ErrorAction SilentlyContinue
+        $repo | Should -BeNullOrEmpty
+    }
+
     It "should register container registry repository with correct ApiVersion" {
         $ContainerRegistryName = "ACRRepo"
         $ContainerRegistryUri = "https://psresourcegettest.azurecr.io/"