| 1 | """Tests for runtime-owned rollback planning.""" |
| 2 | |
| 3 | from __future__ import annotations |
| 4 | |
| 5 | import pytest |
| 6 | |
| 7 | from loader.runtime.rollback import ( |
| 8 | RollbackPlan, |
| 9 | RollbackType, |
| 10 | create_rollback_plan_for_action, |
| 11 | execute_rollback, |
| 12 | get_undo_command, |
| 13 | is_destructive_tool, |
| 14 | ) |
| 15 | |
| 16 | |
| 17 | def test_rollback_plan_formats_reverse_steps() -> None: |
| 18 | plan = RollbackPlan() |
| 19 | plan.add_file_creation("new.txt") |
| 20 | plan.add_file_modification("config.json", '{"a":1}') |
| 21 | |
| 22 | assert plan.get_rollback_steps() == [ |
| 23 | "Restore: config.json", |
| 24 | "Delete: new.txt", |
| 25 | ] |
| 26 | assert plan.to_prompt() == ( |
| 27 | "Rollback plan:\n" |
| 28 | " 1. Restore: config.json\n" |
| 29 | " 2. Delete: new.txt" |
| 30 | ) |
| 31 | |
| 32 | |
| 33 | def test_get_undo_command_handles_common_install_commands() -> None: |
| 34 | assert get_undo_command("mkdir docs") == "rmdir docs" |
| 35 | assert get_undo_command("npm install react") == "npm uninstall react" |
| 36 | assert get_undo_command("pip install pytest") == "pip uninstall -y pytest" |
| 37 | |
| 38 | |
| 39 | def test_is_destructive_tool_covers_patch_and_bash_patterns() -> None: |
| 40 | assert is_destructive_tool("patch", {"file_path": "notes.txt"}) is True |
| 41 | assert is_destructive_tool("bash", {"command": "git checkout -- README.md"}) is True |
| 42 | assert is_destructive_tool("bash", {"command": "ls -la"}) is False |
| 43 | |
| 44 | |
| 45 | @pytest.mark.asyncio |
| 46 | async def test_create_rollback_plan_for_new_write_returns_delete_action(tmp_path) -> None: |
| 47 | target = tmp_path / "notes.txt" |
| 48 | |
| 49 | async def read_file(_path: str) -> str: |
| 50 | raise AssertionError("new files should not be read for rollback") |
| 51 | |
| 52 | action = await create_rollback_plan_for_action( |
| 53 | "write", |
| 54 | {"file_path": str(target), "content": "alpha\n"}, |
| 55 | read_file, |
| 56 | ) |
| 57 | |
| 58 | assert action is not None |
| 59 | assert action.type == RollbackType.FILE_DELETE |
| 60 | assert action.file_path == str(target) |
| 61 | |
| 62 | |
| 63 | @pytest.mark.asyncio |
| 64 | async def test_execute_rollback_restores_file_and_marks_action(tmp_path) -> None: |
| 65 | target = tmp_path / "notes.txt" |
| 66 | plan = RollbackPlan() |
| 67 | plan.add_file_modification(str(target), "restored\n") |
| 68 | |
| 69 | writes: list[tuple[str, str]] = [] |
| 70 | commands: list[str] = [] |
| 71 | |
| 72 | async def write_file(path: str, content: str) -> None: |
| 73 | writes.append((path, content)) |
| 74 | |
| 75 | async def run_command(command: str) -> None: |
| 76 | commands.append(command) |
| 77 | |
| 78 | results = await execute_rollback(plan, write_file, run_command) |
| 79 | |
| 80 | assert results == [f"✓ Restored: {target}"] |
| 81 | assert writes == [(str(target), "restored\n")] |
| 82 | assert commands == [] |
| 83 | assert plan.actions[0].executed is True |