ci: separate dev deployment, main checks and GitHub mirroring

scripts/tests/test_mirror.py

@@ -0,0 +1,36 @@
+"""Verify strict mirroring with isolated local repositories."""
+import os
+from pathlib import Path
+import subprocess
+import sys
+import tempfile
+import unittest
+
+sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
+from mirror import git, references, synchronize
+
+
+class MirrorTests(unittest.TestCase):
+    def test_full_history_tags_deletions_and_failed_source(self):
+        with tempfile.TemporaryDirectory() as directory:
+            root = Path(directory)
+            source, target = root / 'source', root / 'target.git'
+            subprocess.run(['git', 'init', '-b', 'main', str(source)], check=True, capture_output=True)
+            subprocess.run(['git', 'init', '--bare', str(target)], check=True, capture_output=True)
+            (source / 'note.md').write_text('synthetic note')
+            git(source, 'add', '.')
+            git(source, '-c', 'user.name=Test', '-c', '[email protected]', 'commit', '-m', 'test')
+            git(source, 'branch', 'dev')
+            git(source, '-c', 'user.name=Test', '-c', '[email protected]', 'tag', '-a', 'test-tag', '-m', 'test')
+            state = root / 'state'
+            synchronize(state, str(source), str(target), os.environ.copy())
+            self.assertEqual(references(source), references(target))
+            git(source, 'branch', '-D', 'dev')
+            git(source, 'tag', '-d', 'test-tag')
+            git(target, 'branch', 'target-only', 'main')
+            synchronize(state, str(source), str(target), os.environ.copy())
+            self.assertEqual(references(source), references(target))
+            before = references(target)
+            with self.assertRaises(subprocess.CalledProcessError):
+                synchronize(state, str(root / 'missing'), str(target), os.environ.copy())
+            self.assertEqual(before, references(target))