test_core_worktree.py
python
| 1 | """Tests for muse/core/worktree.py — multiple simultaneous branch checkouts.""" |
| 2 | |
| 3 | from __future__ import annotations |
| 4 | |
| 5 | import json |
| 6 | import pathlib |
| 7 | |
| 8 | import pytest |
| 9 | |
| 10 | from muse.core.worktree import ( |
| 11 | WorktreeInfo, |
| 12 | add_worktree, |
| 13 | list_worktrees, |
| 14 | prune_worktrees, |
| 15 | remove_worktree, |
| 16 | ) |
| 17 | |
| 18 | |
| 19 | # --------------------------------------------------------------------------- |
| 20 | # Helpers |
| 21 | # --------------------------------------------------------------------------- |
| 22 | |
| 23 | |
| 24 | def _make_repo(tmp_path: pathlib.Path, branch: str = "main") -> pathlib.Path: |
| 25 | """Create a minimal Muse repo inside a named subdirectory.""" |
| 26 | repo = tmp_path / "myproject" |
| 27 | muse = repo / ".muse" |
| 28 | for d in ("objects", "commits", "snapshots", "refs/heads"): |
| 29 | (muse / d).mkdir(parents=True, exist_ok=True) |
| 30 | (muse / "repo.json").write_text(json.dumps({"repo_id": "test-repo"})) |
| 31 | (muse / "HEAD").write_text(f"refs/heads/{branch}\n") |
| 32 | (muse / "refs" / "heads" / branch).write_text("0" * 64) |
| 33 | return repo |
| 34 | |
| 35 | |
| 36 | def _add_branch(repo: pathlib.Path, branch: str) -> None: |
| 37 | ref = repo / ".muse" / "refs" / "heads" / branch |
| 38 | ref.parent.mkdir(parents=True, exist_ok=True) |
| 39 | ref.write_text("0" * 64) |
| 40 | |
| 41 | |
| 42 | # --------------------------------------------------------------------------- |
| 43 | # add_worktree |
| 44 | # --------------------------------------------------------------------------- |
| 45 | |
| 46 | |
| 47 | def test_add_worktree_creates_directory(tmp_path: pathlib.Path) -> None: |
| 48 | repo = _make_repo(tmp_path) |
| 49 | _add_branch(repo, "feat/audio") |
| 50 | wt_path = add_worktree(repo, "feat-audio", "feat/audio") |
| 51 | assert wt_path.exists() |
| 52 | assert (wt_path).exists() |
| 53 | |
| 54 | |
| 55 | def test_add_worktree_creates_metadata(tmp_path: pathlib.Path) -> None: |
| 56 | repo = _make_repo(tmp_path) |
| 57 | _add_branch(repo, "dev") |
| 58 | add_worktree(repo, "mydev", "dev") |
| 59 | meta = repo / ".muse" / "worktrees" / "mydev.json" |
| 60 | assert meta.exists() |
| 61 | data = json.loads(meta.read_text()) |
| 62 | assert data["name"] == "mydev" |
| 63 | assert data["branch"] == "dev" |
| 64 | |
| 65 | |
| 66 | def test_add_worktree_creates_head_file(tmp_path: pathlib.Path) -> None: |
| 67 | repo = _make_repo(tmp_path) |
| 68 | _add_branch(repo, "dev") |
| 69 | add_worktree(repo, "mydev", "dev") |
| 70 | head = repo / ".muse" / "worktrees" / "mydev.HEAD" |
| 71 | assert head.exists() |
| 72 | assert "refs/heads/dev" in head.read_text() |
| 73 | |
| 74 | |
| 75 | def test_add_worktree_rejects_unknown_branch(tmp_path: pathlib.Path) -> None: |
| 76 | repo = _make_repo(tmp_path) |
| 77 | with pytest.raises(ValueError, match="does not exist"): |
| 78 | add_worktree(repo, "bad", "no-such-branch") |
| 79 | |
| 80 | |
| 81 | def test_add_worktree_rejects_duplicate_name(tmp_path: pathlib.Path) -> None: |
| 82 | repo = _make_repo(tmp_path) |
| 83 | _add_branch(repo, "dev") |
| 84 | add_worktree(repo, "mydev", "dev") |
| 85 | with pytest.raises(ValueError, match="already exists"): |
| 86 | add_worktree(repo, "mydev", "dev") |
| 87 | |
| 88 | |
| 89 | def test_add_worktree_rejects_invalid_name(tmp_path: pathlib.Path) -> None: |
| 90 | repo = _make_repo(tmp_path) |
| 91 | _add_branch(repo, "dev") |
| 92 | with pytest.raises(ValueError): |
| 93 | add_worktree(repo, "..", "dev") |
| 94 | |
| 95 | |
| 96 | def test_add_worktree_directory_name_includes_repo_name(tmp_path: pathlib.Path) -> None: |
| 97 | repo = _make_repo(tmp_path) |
| 98 | _add_branch(repo, "dev") |
| 99 | wt_path = add_worktree(repo, "dev", "dev") |
| 100 | assert "myproject" in wt_path.name |
| 101 | |
| 102 | |
| 103 | # --------------------------------------------------------------------------- |
| 104 | # list_worktrees |
| 105 | # --------------------------------------------------------------------------- |
| 106 | |
| 107 | |
| 108 | def test_list_worktrees_includes_main(tmp_path: pathlib.Path) -> None: |
| 109 | repo = _make_repo(tmp_path) |
| 110 | worktrees = list_worktrees(repo) |
| 111 | assert any(wt.is_main for wt in worktrees) |
| 112 | |
| 113 | |
| 114 | def test_list_worktrees_includes_linked(tmp_path: pathlib.Path) -> None: |
| 115 | repo = _make_repo(tmp_path) |
| 116 | _add_branch(repo, "dev") |
| 117 | add_worktree(repo, "dev", "dev") |
| 118 | worktrees = list_worktrees(repo) |
| 119 | names = [wt.name for wt in worktrees] |
| 120 | assert "dev" in names |
| 121 | |
| 122 | |
| 123 | def test_list_worktrees_empty_repo(tmp_path: pathlib.Path) -> None: |
| 124 | repo = _make_repo(tmp_path) |
| 125 | worktrees = list_worktrees(repo) |
| 126 | assert len(worktrees) == 1 # only main |
| 127 | assert worktrees[0].is_main |
| 128 | |
| 129 | |
| 130 | # --------------------------------------------------------------------------- |
| 131 | # remove_worktree |
| 132 | # --------------------------------------------------------------------------- |
| 133 | |
| 134 | |
| 135 | def test_remove_worktree_removes_directory(tmp_path: pathlib.Path) -> None: |
| 136 | repo = _make_repo(tmp_path) |
| 137 | _add_branch(repo, "dev") |
| 138 | wt_path = add_worktree(repo, "dev", "dev") |
| 139 | assert wt_path.exists() |
| 140 | remove_worktree(repo, "dev") |
| 141 | assert not wt_path.exists() |
| 142 | |
| 143 | |
| 144 | def test_remove_worktree_removes_metadata(tmp_path: pathlib.Path) -> None: |
| 145 | repo = _make_repo(tmp_path) |
| 146 | _add_branch(repo, "dev") |
| 147 | add_worktree(repo, "dev", "dev") |
| 148 | remove_worktree(repo, "dev") |
| 149 | meta = repo / ".muse" / "worktrees" / "dev.json" |
| 150 | assert not meta.exists() |
| 151 | |
| 152 | |
| 153 | def test_remove_worktree_not_found_raises(tmp_path: pathlib.Path) -> None: |
| 154 | repo = _make_repo(tmp_path) |
| 155 | with pytest.raises(ValueError, match="does not exist"): |
| 156 | remove_worktree(repo, "nonexistent") |
| 157 | |
| 158 | |
| 159 | def test_remove_worktree_not_in_list_after_removal(tmp_path: pathlib.Path) -> None: |
| 160 | repo = _make_repo(tmp_path) |
| 161 | _add_branch(repo, "dev") |
| 162 | add_worktree(repo, "dev", "dev") |
| 163 | remove_worktree(repo, "dev") |
| 164 | worktrees = list_worktrees(repo) |
| 165 | names = [wt.name for wt in worktrees] |
| 166 | assert "dev" not in names |
| 167 | |
| 168 | |
| 169 | # --------------------------------------------------------------------------- |
| 170 | # prune_worktrees |
| 171 | # --------------------------------------------------------------------------- |
| 172 | |
| 173 | |
| 174 | def test_prune_removes_stale_metadata(tmp_path: pathlib.Path) -> None: |
| 175 | repo = _make_repo(tmp_path) |
| 176 | _add_branch(repo, "dev") |
| 177 | wt_path = add_worktree(repo, "dev", "dev") |
| 178 | # Manually delete the worktree directory to simulate external removal. |
| 179 | import shutil |
| 180 | shutil.rmtree(wt_path) |
| 181 | pruned = prune_worktrees(repo) |
| 182 | assert "dev" in pruned |
| 183 | |
| 184 | |
| 185 | def test_prune_does_nothing_when_all_present(tmp_path: pathlib.Path) -> None: |
| 186 | repo = _make_repo(tmp_path) |
| 187 | _add_branch(repo, "dev") |
| 188 | add_worktree(repo, "dev", "dev") |
| 189 | pruned = prune_worktrees(repo) |
| 190 | assert pruned == [] |
| 191 | |
| 192 | |
| 193 | def test_prune_empty_repo(tmp_path: pathlib.Path) -> None: |
| 194 | repo = _make_repo(tmp_path) |
| 195 | assert prune_worktrees(repo) == [] |
| 196 | |
| 197 | |
| 198 | # --------------------------------------------------------------------------- |
| 199 | # Stress: multiple worktrees |
| 200 | # --------------------------------------------------------------------------- |
| 201 | |
| 202 | |
| 203 | def test_stress_many_worktrees(tmp_path: pathlib.Path) -> None: |
| 204 | """Creating 10 worktrees should all succeed and be listed.""" |
| 205 | repo = _make_repo(tmp_path) |
| 206 | for i in range(10): |
| 207 | branch = f"feat-{i}" |
| 208 | _add_branch(repo, branch) |
| 209 | add_worktree(repo, f"wt{i}", branch) |
| 210 | |
| 211 | worktrees = list_worktrees(repo) |
| 212 | linked = [wt for wt in worktrees if not wt.is_main] |
| 213 | assert len(linked) == 10 |