from __future__ import annotations import io import json import os import subprocess import tempfile import unittest from contextlib import redirect_stdout from unittest.mock import patch from pkgmgr.actions.branch import gc from pkgmgr.actions.branch.gc_forge import ForgeFacts from pkgmgr.cli.commands.branch import handle_branch from pkgmgr.cli.parser import create_parser GIT_ENV = { **os.environ, "GIT_AUTHOR_NAME": "t", "GIT_AUTHOR_EMAIL": "t@example.org", "GIT_COMMITTER_NAME": "t", "GIT_COMMITTER_EMAIL": "t@example.org", } def git(cwd: str, *args: str) -> str: return subprocess.run( ["git", "-c", "commit.gpgsign=false", *args], cwd=cwd, env=GIT_ENV, check=True, capture_output=True, text=True, ).stdout.strip() def docker_available() -> bool: try: subprocess.run(["docker", "info"], check=True, capture_output=True) except (FileNotFoundError, subprocess.CalledProcessError): return False return True class TestBranchGc(unittest.TestCase): def setUp(self) -> None: self._tmp = tempfile.TemporaryDirectory() self.root = os.path.realpath(self._tmp.name) self.origin = os.path.join(self.root, "origin.git") self.repo = os.path.join(self.root, "repo") git(self.root, "init", "--bare", "-b", "main", self.origin) git(self.root, "init", "-b", "main", self.repo) git(self.repo, "remote", "add", "origin", self.origin) self._commit("init") git(self.repo, "push", "-u", "origin", "main") self._branch_with_commit("merged") git(self.repo, "merge", "--no-ff", "-m", "merge merged", "merged") git(self.repo, "push", "origin", "main") git(self.repo, "branch", "fresh") git(self.repo, "push", "origin", "fresh") self._branch_with_commit("wip") self._branch_with_commit("squashed") self._branch_with_commit("locked") git(self.repo, "merge", "--no-ff", "-m", "merge locked", "locked") git(self.repo, "push", "origin", "main") git(self.repo, "remote", "set-head", "origin", "main") self.merged_wt = os.path.join(self.root, "wt-merged") git(self.repo, "worktree", "add", self.merged_wt, "merged") self.dirty_wt = os.path.join(self.root, "wt-dirty") git(self.repo, "worktree", "add", "-b", "dirty", self.dirty_wt, "merged") with open(os.path.join(self.dirty_wt, "scratch.txt"), "w") as fh: fh.write("x") self.locked_wt = os.path.join(self.root, "wt-locked") git(self.repo, "worktree", "add", self.locked_wt, "locked") self.squashed_sha = git(self.repo, "rev-parse", "squashed") self.forge = ForgeFacts( merged_heads={self.squashed_sha: 7}, open_heads={"wip": 3} ) def tearDown(self) -> None: self._tmp.cleanup() def _commit(self, name: str) -> None: with open(os.path.join(self.repo, f"{name}.txt"), "w") as fh: fh.write(name) git(self.repo, "add", f"{name}.txt") git(self.repo, "commit", "-m", name) def _branch_with_commit(self, name: str) -> None: git(self.repo, "checkout", "-b", name, "main") self._commit(name) git(self.repo, "push", "origin", name) git(self.repo, "checkout", "main") def _lock(self, reason: str) -> None: git(self.repo, "worktree", "lock", "--reason", reason, self.locked_wt) def _plan(self, host_ns: bool, cwds: dict[int, str]) -> gc.Repo: with ( patch.object(gc, "fetch_forge_facts", return_value=self.forge), patch.object(gc, "_process_cwds", return_value=cwds), ): return gc.plan_repo(self.repo, [], host_ns) def _items(self, plan: gc.Repo) -> dict[str, gc.Item]: return {item.branch: item for item in plan.items if item.branch} def test_classifies_every_branch(self) -> None: items = self._items(self._plan(host_ns=True, cwds={})) self.assertEqual(items["main"].state, "protected") self.assertEqual(items["merged"].state, "merged-clean") self.assertEqual(items["merged"].merged_by, "ancestor") self.assertEqual( items["merged"].actions, ["worktree", "local-branch", "remote-branch:origin"], ) self.assertTrue(items["merged"].eligible) self.assertEqual(items["squashed"].merged_by, "pr#7") self.assertTrue(items["squashed"].eligible) self.assertEqual(items["fresh"].state, "unmerged") self.assertEqual(items["fresh"].reason, "no own commits") self.assertEqual(items["wip"].state, "unmerged") self.assertEqual(items["wip"].skip, "open-pr #3") self.assertEqual(items["dirty"].state, "dirty") def test_busy_worktree_is_skipped(self) -> None: cwds = {4242: os.path.join(self.merged_wt, "sub")} items = self._items(self._plan(host_ns=True, cwds=cwds)) self.assertTrue(items["merged"].skip.startswith("process: pid 4242")) self.assertFalse(items["merged"].eligible) def test_lock_with_live_pid_is_skipped(self) -> None: self._lock(f"claude agent x (pid {os.getpid()} on host)") items = self._items(self._plan(host_ns=True, cwds={})) self.assertEqual(items["locked"].skip, f"lock: pid {os.getpid()} alive") def test_lock_with_dead_pid_is_overridden(self) -> None: self._lock("claude agent x (pid 999999999 on host)") items = self._items(self._plan(host_ns=True, cwds={})) self.assertIsNone(items["locked"].skip) self.assertTrue(items["locked"].eligible) def test_lock_outside_host_namespace_is_unknown(self) -> None: self._lock("claude agent x (pid 999999999 on host)") items = self._items(self._plan(host_ns=False, cwds={})) self.assertEqual(items["locked"].skip, "lock: liveness unknown") def test_lock_without_pid_is_respected(self) -> None: self._lock("manual hold") items = self._items(self._plan(host_ns=True, cwds={})) self.assertEqual(items["locked"].skip, "lock: manual hold") def test_forge_unavailable_skips_everything(self) -> None: self.forge = ForgeFacts(unavailable="no GitHub token") items = self._items(self._plan(host_ns=True, cwds={})) self.assertEqual(items["merged"].skip, "forge unavailable") self.assertIsNone(items["squashed"].merged_by) def test_stale_metadata_is_listed_not_pruned(self) -> None: stub = os.path.join(self.repo, ".git", "worktrees", "stub") os.makedirs(stub) open(os.path.join(stub, "commondir"), "w").close() plan = self._plan(host_ns=True, cwds={}) stale = [i for i in plan.items if i.state == "stale"] self.assertEqual([i.worktree for i in stale], [stub]) self.assertTrue(os.path.isdir(stub)) def test_execute_removes_worktree_and_branches(self) -> None: plan = self._plan(host_ns=True, cwds={}) item = self._items(plan)["merged"] meta = os.path.join(self.repo, ".git", "worktrees", "wt-merged") with patch.object(gc, "_process_cwds", return_value={}): gc.execute(plan, item) self.assertEqual(item.result, "done") self.assertFalse(os.path.exists(self.merged_wt)) self.assertFalse(os.path.exists(meta)) self.assertEqual(git(self.repo, "branch", "--list", "merged"), "") self.assertEqual(git(self.origin, "branch", "--list", "merged"), "") @unittest.skipUnless(docker_available(), "docker is not available") def test_execute_removes_foreign_owned_worktree_via_container(self) -> None: with open(os.path.join(self.repo, ".git", "info", "exclude"), "a") as fh: fh.write("node_modules/\n") subprocess.run( [ "docker", "run", "--rm", "-v", f"{self.merged_wt}:/w", gc.CLEANUP_IMAGE, "sh", "-c", ( "mkdir -p /w/node_modules/pkg && touch /w/node_modules/pkg/index.js" " && chown -R 65534:65534 /w/node_modules" ), ], check=True, capture_output=True, ) self.assertTrue(gc._foreign_owned(self.merged_wt)) plan = self._plan(host_ns=True, cwds={}) item = self._items(plan)["merged"] meta = os.path.join(self.repo, ".git", "worktrees", "wt-merged") with patch.object(gc, "_process_cwds", return_value={}): gc.execute(plan, item) self.assertEqual(item.result, "done") self.assertFalse(os.path.lexists(self.merged_wt)) self.assertFalse(os.path.exists(meta)) self.assertEqual(git(self.repo, "branch", "--list", "merged"), "") def test_metadata_kept_when_checkout_survives_removal(self) -> None: plan = self._plan(host_ns=True, cwds={}) item = self._items(plan)["merged"] meta = os.path.join(self.repo, ".git", "worktrees", "wt-merged") with ( patch.object(gc, "_process_cwds", return_value={}), patch.object(gc, "_foreign_owned", return_value=True), patch.object(gc, "_docker", return_value="") as docker, ): gc.execute(plan, item) docker.assert_called_once_with( [ "run", "--rm", "-v", f"{self.root}:/w", gc.CLEANUP_IMAGE, "rm", "-rf", "/w/wt-merged", ] ) self.assertTrue(item.result.startswith("failed: worktree")) self.assertTrue(os.path.isdir(self.merged_wt)) self.assertTrue(os.path.isdir(meta)) self.assertNotEqual(git(self.repo, "branch", "--list", "merged"), "") def test_execute_skips_item_changed_since_plan(self) -> None: plan = self._plan(host_ns=True, cwds={}) item = self._items(plan)["merged"] with open(os.path.join(self.merged_wt, "late.txt"), "w") as fh: fh.write("late") with patch.object(gc, "_process_cwds", return_value={}): gc.execute(plan, item) self.assertTrue(item.result.startswith("skipped: changed since plan")) self.assertTrue(os.path.isdir(self.merged_wt)) def test_branch_gc_json_and_refusal(self) -> None: out = io.StringIO() with ( patch.object(gc, "host_pid_namespace", return_value=True), patch.object(gc, "list_compose_containers", return_value=[]), patch.object(gc, "fetch_forge_facts", return_value=self.forge), patch.object(gc, "_process_cwds", return_value={}), redirect_stdout(out), ): code = gc.branch_gc( [self.repo], apply=False, as_json=True, include=["merged"], exclude=[] ) data = json.loads(out.getvalue()) self.assertEqual(code, 0) self.assertEqual([i["branch"] for i in data["repos"][0]["items"]], ["merged"]) with patch.object(gc, "host_pid_namespace", return_value=False): self.assertEqual( gc.branch_gc( [self.repo], apply=True, as_json=False, include=[], exclude=[] ), 2, ) def test_cli_forwards_gc_flags(self) -> None: args = create_parser("test").parse_args( [ "branch", "gc", "--apply", "--json", "--branch", "a", "--branch", "b", "--exclude", "c", ] ) with ( patch("pkgmgr.cli.commands.branch.main_repo_root", return_value=self.repo), patch("pkgmgr.cli.commands.branch.branch_gc", return_value=1) as run_gc, self.assertRaises(SystemExit) as exit_ctx, ): handle_branch(args, ctx=None) self.assertEqual(exit_ctx.exception.code, 1) run_gc.assert_called_once_with( [self.repo], apply=True, as_json=True, include=["a", "b"], exclude=["c"] ) if __name__ == "__main__": unittest.main()