Add repository/enterprise owner type guard to TEMPLATE and instructions docs

TEMPLATE.ps1 and both code snippets in tests.instructions.md were missing
the if-guard for OwnerType values 'repository' and 'enterprise' that all
actual test files already use. Without it the template's switch falls
through silently, returning  without making it explicit, and the
instructions guide readers toward a pattern that omits the guard.

Author: MariusStorhaug

.github/instructions/tests.instructions.md

@@ -98,18 +98,26 @@ whether the global `BeforeAll.ps1` already provisioned the repository.
 Primary repositories use `-AddReadme`, `-License 'mit'`, and `-Gitignore 'VisualStudio'` so that
 a default branch with content is available for tests that need commits (e.g., releases, tags).
 
+Some auth cases (e.g., `repository`, `enterprise`) do not operate on a user- or org-owned repository.
+Skip provisioning for those owner types and set `$repo = $null` so that repo-dependent tests can
+be skipped cleanly:
+
 ```powershell
 $repoPrefix = "Test-$os-$TokenType"
 $repoName = "$repoPrefix-$id"
-$repoParams = @{
-    Name      = $repoName
-    AddReadme = $true
-    License   = 'mit'
-    Gitignore = 'VisualStudio'
-}
-$repo = switch ($OwnerType) {
-    'user'         { Set-GitHubRepository @repoParams }
-    'organization' { Set-GitHubRepository @repoParams -Organization $Owner }
+if ($OwnerType -in ('repository', 'enterprise')) {
+    $repo = $null
+} else {
+    $repoParams = @{
+        Name      = $repoName
+        AddReadme = $true
+        License   = 'mit'
+        Gitignore = 'VisualStudio'
+    }
+    $repo = switch ($OwnerType) {
+        'user'         { Set-GitHubRepository @repoParams }
+        'organization' { Set-GitHubRepository @repoParams -Organization $Owner }
+    }
 }
 ```
 
@@ -142,15 +150,19 @@ Describe 'TestName' {
 
             $repoPrefix = "Test-$os-$TokenType"
             $repoName = "$repoPrefix-$id"
-            $repoParams = @{
-                Name      = $repoName
-                AddReadme = $true
-                License   = 'mit'
-                Gitignore = 'VisualStudio'
-            }
-            $repo = switch ($OwnerType) {
-                'user'         { Set-GitHubRepository @repoParams }
-                'organization' { Set-GitHubRepository @repoParams -Organization $Owner }
+            if ($OwnerType -in ('repository', 'enterprise')) {
+                $repo = $null
+            } else {
+                $repoParams = @{
+                    Name      = $repoName
+                    AddReadme = $true
+                    License   = 'mit'
+                    Gitignore = 'VisualStudio'
+                }
+                $repo = switch ($OwnerType) {
+                    'user'         { Set-GitHubRepository @repoParams }
+                    'organization' { Set-GitHubRepository @repoParams -Organization $Owner }
+                }
             }
         }
 

tests/TEMPLATE.ps1

@@ -44,15 +44,19 @@ Describe 'Template' {
             # Ensure the shared test repository exists. Set-GitHubRepository is idempotent.
             $repoPrefix = "Test-$os-$TokenType"
             $repoName = "$repoPrefix-$id"
-            $repoParams = @{
-                Name      = $repoName
-                AddReadme = $true
-                License   = 'mit'
-                Gitignore = 'VisualStudio'
-            }
-            $repo = switch ($OwnerType) {
-                'user' { Set-GitHubRepository @repoParams }
-                'organization' { Set-GitHubRepository @repoParams -Organization $Owner }
+            if ($OwnerType -in ('repository', 'enterprise')) {
+                $repo = $null
+            } else {
+                $repoParams = @{
+                    Name      = $repoName
+                    AddReadme = $true
+                    License   = 'mit'
+                    Gitignore = 'VisualStudio'
+                }
+                $repo = switch ($OwnerType) {
+                    'user' { Set-GitHubRepository @repoParams }
+                    'organization' { Set-GitHubRepository @repoParams -Organization $Owner }
+                }
             }
         }
         AfterAll {