Do a dry run of stubsabot on PRs touching scripts/ or tests/ (#10508)

.github/workflows/meta_tests.yml

@@ -1,4 +1,5 @@
-name: Typecheck-typeshed-code
+# This workflow is for testing typeshed's scripts and tests themselves
+name: Meta-tests
 
 on:
   workflow_dispatch:
@@ -9,8 +10,9 @@ on:
     paths:
       - "scripts/**"
       - "tests/**"
-      - ".github/workflows/typecheck_typeshed_code.yml"
+      - ".github/workflows/meta_tests.yml"
       - "requirements-tests.txt"
+      - "pyproject.toml"
 
 permissions:
   contents: read
@@ -68,3 +70,19 @@ jobs:
           python-platform: ${{ matrix.python-platform }}
           python-version: "3.9"
           project: ./pyrightconfig.scripts_and_tests.json
+  stubsabot-dry-run:
+    name: Stubsabot dry run
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: "3.11"
+          cache: pip
+          cache-dependency-path: requirements-tests.txt
+      - name: Git config
+        run: |
+          git config --global user.name stubsabot
+          git config --global user.email '<>'
+      - run: pip install -r requirements-tests.txt
+      - run: python scripts/stubsabot.py --action-level local

scripts/stubsabot.py

@@ -744,7 +744,7 @@ async def main() -> None:
         ["git", "branch", "--show-current"], text=True, capture_output=True, check=True
     ).stdout.strip()
 
-    if args.action_level >= ActionLevel.fork:
+    if args.action_level >= ActionLevel.local:
         subprocess.check_call(["git", "fetch", "--prune", "--all"])
 
     try:
@@ -784,7 +784,7 @@ async def main() -> None:
     finally:
         # if you need to cleanup, try:
         # git branch -D $(git branch --list 'stubsabot/*')
-        if args.action_level >= ActionLevel.local:
+        if args.action_level >= ActionLevel.local and original_branch:
             subprocess.check_call(["git", "checkout", original_branch])