test_plumbing_rev_parse.py
python
| 1 | """Tests for ``muse plumbing rev-parse``. |
| 2 | |
| 3 | Covers: HEAD resolution, branch-name resolution, full commit-ID passthrough, |
| 4 | abbreviated-prefix resolution, ambiguous-prefix detection, not-found errors, |
| 5 | text-format output, bad-format handling, and an empty-branch edge case. |
| 6 | """ |
| 7 | |
| 8 | from __future__ import annotations |
| 9 | |
| 10 | import datetime |
| 11 | import hashlib |
| 12 | import json |
| 13 | import pathlib |
| 14 | |
| 15 | from tests.cli_test_helper import CliRunner |
| 16 | |
| 17 | cli = None # argparse migration — CliRunner ignores this arg |
| 18 | from muse.core.errors import ExitCode |
| 19 | from muse.core.store import CommitRecord, SnapshotRecord, write_commit, write_snapshot |
| 20 | |
| 21 | runner = CliRunner() |
| 22 | |
| 23 | |
| 24 | # --------------------------------------------------------------------------- |
| 25 | # Helpers |
| 26 | # --------------------------------------------------------------------------- |
| 27 | |
| 28 | |
| 29 | def _sha(tag: str) -> str: |
| 30 | return hashlib.sha256(tag.encode()).hexdigest() |
| 31 | |
| 32 | |
| 33 | def _init_repo(path: pathlib.Path) -> pathlib.Path: |
| 34 | muse = path / ".muse" |
| 35 | (muse / "commits").mkdir(parents=True) |
| 36 | (muse / "snapshots").mkdir(parents=True) |
| 37 | (muse / "objects").mkdir(parents=True) |
| 38 | (muse / "refs" / "heads").mkdir(parents=True) |
| 39 | (muse / "HEAD").write_text("ref: refs/heads/main", encoding="utf-8") |
| 40 | (muse / "repo.json").write_text( |
| 41 | json.dumps({"repo_id": "test-repo", "domain": "midi"}), encoding="utf-8" |
| 42 | ) |
| 43 | return path |
| 44 | |
| 45 | |
| 46 | def _env(repo: pathlib.Path) -> dict[str, str]: |
| 47 | return {"MUSE_REPO_ROOT": str(repo)} |
| 48 | |
| 49 | |
| 50 | def _snap(repo: pathlib.Path, tag: str = "snap") -> str: |
| 51 | sid = _sha(f"snap-{tag}") |
| 52 | write_snapshot( |
| 53 | repo, |
| 54 | SnapshotRecord( |
| 55 | snapshot_id=sid, |
| 56 | manifest={}, |
| 57 | created_at=datetime.datetime(2026, 1, 1, tzinfo=datetime.timezone.utc), |
| 58 | ), |
| 59 | ) |
| 60 | return sid |
| 61 | |
| 62 | |
| 63 | def _commit( |
| 64 | repo: pathlib.Path, tag: str, sid: str, branch: str = "main", parent: str | None = None |
| 65 | ) -> str: |
| 66 | cid = _sha(tag) |
| 67 | write_commit( |
| 68 | repo, |
| 69 | CommitRecord( |
| 70 | commit_id=cid, |
| 71 | repo_id="test-repo", |
| 72 | branch=branch, |
| 73 | snapshot_id=sid, |
| 74 | message=tag, |
| 75 | committed_at=datetime.datetime(2026, 1, 1, tzinfo=datetime.timezone.utc), |
| 76 | author="tester", |
| 77 | parent_commit_id=parent, |
| 78 | ), |
| 79 | ) |
| 80 | ref = repo / ".muse" / "refs" / "heads" / branch |
| 81 | ref.parent.mkdir(parents=True, exist_ok=True) |
| 82 | ref.write_text(cid, encoding="utf-8") |
| 83 | return cid |
| 84 | |
| 85 | |
| 86 | # --------------------------------------------------------------------------- |
| 87 | # Unit: HEAD resolution |
| 88 | # --------------------------------------------------------------------------- |
| 89 | |
| 90 | |
| 91 | class TestRevParseHead: |
| 92 | def test_head_resolves_to_current_branch_commit(self, tmp_path: pathlib.Path) -> None: |
| 93 | repo = _init_repo(tmp_path) |
| 94 | sid = _snap(repo) |
| 95 | cid = _commit(repo, "first", sid) |
| 96 | result = runner.invoke(cli, ["plumbing", "rev-parse", "HEAD"], env=_env(repo)) |
| 97 | assert result.exit_code == 0, result.output |
| 98 | data = json.loads(result.stdout) |
| 99 | assert data["commit_id"] == cid |
| 100 | assert data["ref"] == "HEAD" |
| 101 | |
| 102 | def test_head_case_insensitive(self, tmp_path: pathlib.Path) -> None: |
| 103 | repo = _init_repo(tmp_path) |
| 104 | sid = _snap(repo) |
| 105 | cid = _commit(repo, "c1", sid) |
| 106 | for variant in ("head", "Head", "hEaD"): |
| 107 | result = runner.invoke(cli, ["plumbing", "rev-parse", variant], env=_env(repo)) |
| 108 | assert result.exit_code == 0 |
| 109 | assert json.loads(result.stdout)["commit_id"] == cid |
| 110 | |
| 111 | def test_head_on_empty_branch_exits_user_error(self, tmp_path: pathlib.Path) -> None: |
| 112 | repo = _init_repo(tmp_path) # No commits yet. |
| 113 | result = runner.invoke(cli, ["plumbing", "rev-parse", "HEAD"], env=_env(repo)) |
| 114 | assert result.exit_code == ExitCode.USER_ERROR |
| 115 | assert "error" in json.loads(result.stdout) |
| 116 | |
| 117 | |
| 118 | # --------------------------------------------------------------------------- |
| 119 | # Integration: branch-name resolution |
| 120 | # --------------------------------------------------------------------------- |
| 121 | |
| 122 | |
| 123 | class TestRevParseBranch: |
| 124 | def test_branch_name_resolves_to_tip_commit(self, tmp_path: pathlib.Path) -> None: |
| 125 | repo = _init_repo(tmp_path) |
| 126 | sid = _snap(repo) |
| 127 | cid = _commit(repo, "tip", sid, branch="feature") |
| 128 | (repo / ".muse" / "HEAD").write_text("ref: refs/heads/main", encoding="utf-8") |
| 129 | result = runner.invoke(cli, ["plumbing", "rev-parse", "feature"], env=_env(repo)) |
| 130 | assert result.exit_code == 0 |
| 131 | assert json.loads(result.stdout)["commit_id"] == cid |
| 132 | |
| 133 | def test_nonexistent_branch_not_found(self, tmp_path: pathlib.Path) -> None: |
| 134 | repo = _init_repo(tmp_path) |
| 135 | result = runner.invoke(cli, ["plumbing", "rev-parse", "no-such-branch"], env=_env(repo)) |
| 136 | assert result.exit_code == ExitCode.USER_ERROR |
| 137 | assert json.loads(result.stdout)["error"] == "not found" |
| 138 | |
| 139 | def test_multiple_branches_each_resolve_independently(self, tmp_path: pathlib.Path) -> None: |
| 140 | repo = _init_repo(tmp_path) |
| 141 | sid = _snap(repo) |
| 142 | cid_main = _commit(repo, "main-c", sid, branch="main") |
| 143 | cid_dev = _commit(repo, "dev-c", sid, branch="dev") |
| 144 | r_main = runner.invoke(cli, ["plumbing", "rev-parse", "main"], env=_env(repo)) |
| 145 | r_dev = runner.invoke(cli, ["plumbing", "rev-parse", "dev"], env=_env(repo)) |
| 146 | assert json.loads(r_main.stdout)["commit_id"] == cid_main |
| 147 | assert json.loads(r_dev.stdout)["commit_id"] == cid_dev |
| 148 | |
| 149 | |
| 150 | # --------------------------------------------------------------------------- |
| 151 | # Integration: full & abbreviated commit ID |
| 152 | # --------------------------------------------------------------------------- |
| 153 | |
| 154 | |
| 155 | class TestRevParseCommitId: |
| 156 | def test_full_64_char_id_resolves(self, tmp_path: pathlib.Path) -> None: |
| 157 | repo = _init_repo(tmp_path) |
| 158 | sid = _snap(repo) |
| 159 | cid = _commit(repo, "commit", sid) |
| 160 | result = runner.invoke(cli, ["plumbing", "rev-parse", cid], env=_env(repo)) |
| 161 | assert result.exit_code == 0 |
| 162 | assert json.loads(result.stdout)["commit_id"] == cid |
| 163 | |
| 164 | def test_prefix_resolves_when_unique(self, tmp_path: pathlib.Path) -> None: |
| 165 | repo = _init_repo(tmp_path) |
| 166 | sid = _snap(repo) |
| 167 | cid = _commit(repo, "unique-prefix", sid) |
| 168 | prefix = cid[:12] |
| 169 | result = runner.invoke(cli, ["plumbing", "rev-parse", prefix], env=_env(repo)) |
| 170 | assert result.exit_code == 0 |
| 171 | assert json.loads(result.stdout)["commit_id"] == cid |
| 172 | |
| 173 | def test_unknown_full_id_exits_not_found(self, tmp_path: pathlib.Path) -> None: |
| 174 | repo = _init_repo(tmp_path) |
| 175 | ghost = _sha("ghost-commit") |
| 176 | result = runner.invoke(cli, ["plumbing", "rev-parse", ghost], env=_env(repo)) |
| 177 | assert result.exit_code == ExitCode.USER_ERROR |
| 178 | |
| 179 | |
| 180 | # --------------------------------------------------------------------------- |
| 181 | # Integration: format flags |
| 182 | # --------------------------------------------------------------------------- |
| 183 | |
| 184 | |
| 185 | class TestRevParseFormats: |
| 186 | def test_text_format_emits_bare_commit_id(self, tmp_path: pathlib.Path) -> None: |
| 187 | repo = _init_repo(tmp_path) |
| 188 | sid = _snap(repo) |
| 189 | cid = _commit(repo, "text", sid) |
| 190 | result = runner.invoke( |
| 191 | cli, ["plumbing", "rev-parse", "--format", "text", "main"], env=_env(repo) |
| 192 | ) |
| 193 | assert result.exit_code == 0 |
| 194 | assert result.stdout.strip() == cid |
| 195 | |
| 196 | def test_short_format_flag(self, tmp_path: pathlib.Path) -> None: |
| 197 | repo = _init_repo(tmp_path) |
| 198 | sid = _snap(repo) |
| 199 | cid = _commit(repo, "short", sid) |
| 200 | result = runner.invoke(cli, ["plumbing", "rev-parse", "-f", "text", "main"], env=_env(repo)) |
| 201 | assert result.exit_code == 0 |
| 202 | assert result.stdout.strip() == cid |
| 203 | |
| 204 | def test_bad_format_exits_user_error(self, tmp_path: pathlib.Path) -> None: |
| 205 | repo = _init_repo(tmp_path) |
| 206 | sid = _snap(repo) |
| 207 | _commit(repo, "x", sid) |
| 208 | result = runner.invoke( |
| 209 | cli, ["plumbing", "rev-parse", "--format", "toml", "main"], env=_env(repo) |
| 210 | ) |
| 211 | assert result.exit_code == ExitCode.USER_ERROR |
| 212 | |
| 213 | def test_json_output_has_ref_and_commit_id_keys(self, tmp_path: pathlib.Path) -> None: |
| 214 | repo = _init_repo(tmp_path) |
| 215 | sid = _snap(repo) |
| 216 | _commit(repo, "kv", sid) |
| 217 | result = runner.invoke(cli, ["plumbing", "rev-parse", "main"], env=_env(repo)) |
| 218 | assert result.exit_code == 0 |
| 219 | data = json.loads(result.stdout) |
| 220 | assert "ref" in data |
| 221 | assert "commit_id" in data |