test_plumbing_commit_graph_enhancements.py
python
| 1 | """Tests for the new commit-graph flags: --count, --first-parent, --ancestry-path.""" |
| 2 | |
| 3 | from __future__ import annotations |
| 4 | |
| 5 | import datetime |
| 6 | import hashlib |
| 7 | import json |
| 8 | import pathlib |
| 9 | |
| 10 | import pytest |
| 11 | from tests.cli_test_helper import CliRunner |
| 12 | |
| 13 | cli = None # argparse migration — CliRunner ignores this arg |
| 14 | from muse.core.store import CommitRecord, SnapshotRecord, write_commit, write_snapshot |
| 15 | |
| 16 | runner = CliRunner() |
| 17 | |
| 18 | |
| 19 | def _sha(tag: str) -> str: |
| 20 | return hashlib.sha256(tag.encode()).hexdigest() |
| 21 | |
| 22 | |
| 23 | def _init_repo(path: pathlib.Path) -> pathlib.Path: |
| 24 | muse = path / ".muse" |
| 25 | (muse / "commits").mkdir(parents=True) |
| 26 | (muse / "snapshots").mkdir(parents=True) |
| 27 | (muse / "objects").mkdir(parents=True) |
| 28 | (muse / "refs" / "heads").mkdir(parents=True) |
| 29 | (muse / "HEAD").write_text("ref: refs/heads/main", encoding="utf-8") |
| 30 | (muse / "repo.json").write_text( |
| 31 | json.dumps({"repo_id": "test-repo", "domain": "midi"}), encoding="utf-8" |
| 32 | ) |
| 33 | return path |
| 34 | |
| 35 | |
| 36 | def _env(repo: pathlib.Path) -> dict[str, str]: |
| 37 | return {"MUSE_REPO_ROOT": str(repo)} |
| 38 | |
| 39 | |
| 40 | def _snap(repo: pathlib.Path, tag: str) -> str: |
| 41 | sid = _sha(tag + ":snap") |
| 42 | write_snapshot( |
| 43 | repo, |
| 44 | SnapshotRecord( |
| 45 | snapshot_id=sid, |
| 46 | manifest={}, |
| 47 | created_at=datetime.datetime(2026, 1, 1, tzinfo=datetime.timezone.utc), |
| 48 | ), |
| 49 | ) |
| 50 | return sid |
| 51 | |
| 52 | |
| 53 | def _commit( |
| 54 | repo: pathlib.Path, |
| 55 | tag: str, |
| 56 | branch: str = "main", |
| 57 | parent: str | None = None, |
| 58 | parent2: str | None = None, |
| 59 | ) -> str: |
| 60 | sid = _snap(repo, tag) |
| 61 | cid = _sha(tag) |
| 62 | write_commit( |
| 63 | repo, |
| 64 | CommitRecord( |
| 65 | commit_id=cid, |
| 66 | repo_id="test-repo", |
| 67 | branch=branch, |
| 68 | snapshot_id=sid, |
| 69 | message=tag, |
| 70 | committed_at=datetime.datetime(2026, 1, 1, tzinfo=datetime.timezone.utc), |
| 71 | author="tester", |
| 72 | parent_commit_id=parent, |
| 73 | parent2_commit_id=parent2, |
| 74 | ), |
| 75 | ) |
| 76 | ref_path = repo / ".muse" / "refs" / "heads" / branch |
| 77 | ref_path.parent.mkdir(parents=True, exist_ok=True) |
| 78 | ref_path.write_text(cid, encoding="utf-8") |
| 79 | return cid |
| 80 | |
| 81 | |
| 82 | class TestCommitGraphCount: |
| 83 | def test_count_returns_integer(self, tmp_path: pathlib.Path) -> None: |
| 84 | _init_repo(tmp_path) |
| 85 | c1 = _commit(tmp_path, "a", parent=None) |
| 86 | _commit(tmp_path, "b", parent=c1) |
| 87 | result = runner.invoke(cli, ["plumbing", "commit-graph", "--count"], env=_env(tmp_path)) |
| 88 | assert result.exit_code == 0 |
| 89 | data = json.loads(result.output) |
| 90 | assert "count" in data |
| 91 | assert data["count"] == 2 |
| 92 | assert "commits" not in data # full node list suppressed |
| 93 | |
| 94 | def test_count_no_commits_returns_error(self, tmp_path: pathlib.Path) -> None: |
| 95 | _init_repo(tmp_path) |
| 96 | result = runner.invoke(cli, ["plumbing", "commit-graph", "--count"], env=_env(tmp_path)) |
| 97 | assert result.exit_code != 0 |
| 98 | |
| 99 | def test_count_with_stop_at(self, tmp_path: pathlib.Path) -> None: |
| 100 | _init_repo(tmp_path) |
| 101 | base = _commit(tmp_path, "base", parent=None) |
| 102 | _commit(tmp_path, "feature", parent=base) |
| 103 | result = runner.invoke( |
| 104 | cli, ["plumbing", "commit-graph", "--stop-at", base, "--count"], env=_env(tmp_path) |
| 105 | ) |
| 106 | assert result.exit_code == 0 |
| 107 | data = json.loads(result.output) |
| 108 | assert data["count"] == 1 # only "feature", base excluded |
| 109 | |
| 110 | def test_count_short_flag(self, tmp_path: pathlib.Path) -> None: |
| 111 | _init_repo(tmp_path) |
| 112 | _commit(tmp_path, "a") |
| 113 | result = runner.invoke(cli, ["plumbing", "commit-graph", "-c"], env=_env(tmp_path)) |
| 114 | assert result.exit_code == 0 |
| 115 | data = json.loads(result.output) |
| 116 | assert "count" in data |
| 117 | |
| 118 | |
| 119 | class TestCommitGraphFirstParent: |
| 120 | def test_first_parent_only(self, tmp_path: pathlib.Path) -> None: |
| 121 | _init_repo(tmp_path) |
| 122 | c1 = _commit(tmp_path, "c1", parent=None) |
| 123 | c2 = _commit(tmp_path, "c2", parent=c1) |
| 124 | result = runner.invoke( |
| 125 | cli, ["plumbing", "commit-graph", "--first-parent", "--count"], env=_env(tmp_path) |
| 126 | ) |
| 127 | assert result.exit_code == 0 |
| 128 | data = json.loads(result.output) |
| 129 | assert data["count"] == 2 |
| 130 | |
| 131 | def test_first_parent_excludes_merge_parent(self, tmp_path: pathlib.Path) -> None: |
| 132 | """With --first-parent, second parents of merges are not followed.""" |
| 133 | _init_repo(tmp_path) |
| 134 | c1 = _commit(tmp_path, "c1", parent=None) |
| 135 | c2 = _commit(tmp_path, "branch_tip", "feat", parent=c1) |
| 136 | # merge commit with c1 as first parent, c2 as second parent |
| 137 | _commit(tmp_path, "merge", parent=c1, parent2=c2) |
| 138 | result = runner.invoke( |
| 139 | cli, ["plumbing", "commit-graph", "--first-parent", "--count"], env=_env(tmp_path) |
| 140 | ) |
| 141 | assert result.exit_code == 0 |
| 142 | data = json.loads(result.output) |
| 143 | # Should NOT follow c2 branch; only main chain: merge → c1 |
| 144 | assert data["count"] == 2 # merge + c1 |
| 145 | |
| 146 | def test_first_parent_short_flag(self, tmp_path: pathlib.Path) -> None: |
| 147 | _init_repo(tmp_path) |
| 148 | _commit(tmp_path, "c1") |
| 149 | result = runner.invoke( |
| 150 | cli, ["plumbing", "commit-graph", "-1", "--count"], env=_env(tmp_path) |
| 151 | ) |
| 152 | assert result.exit_code == 0 |
| 153 | |
| 154 | |
| 155 | class TestCommitGraphAncestryPath: |
| 156 | def test_ancestry_path_requires_stop_at(self, tmp_path: pathlib.Path) -> None: |
| 157 | _init_repo(tmp_path) |
| 158 | _commit(tmp_path, "c1") |
| 159 | result = runner.invoke( |
| 160 | cli, ["plumbing", "commit-graph", "--ancestry-path"], env=_env(tmp_path) |
| 161 | ) |
| 162 | assert result.exit_code != 0 |
| 163 | data = json.loads(result.output) |
| 164 | assert "error" in data |
| 165 | |
| 166 | def test_ancestry_path_with_stop_at_runs(self, tmp_path: pathlib.Path) -> None: |
| 167 | _init_repo(tmp_path) |
| 168 | base = _commit(tmp_path, "base", parent=None) |
| 169 | _commit(tmp_path, "feature", parent=base) |
| 170 | result = runner.invoke( |
| 171 | cli, |
| 172 | ["plumbing", "commit-graph", "--stop-at", base, "--ancestry-path"], |
| 173 | env=_env(tmp_path), |
| 174 | ) |
| 175 | assert result.exit_code == 0 |
| 176 | data = json.loads(result.output) |
| 177 | assert "commits" in data |
| 178 | |
| 179 | def test_ancestry_path_short_flag(self, tmp_path: pathlib.Path) -> None: |
| 180 | _init_repo(tmp_path) |
| 181 | base = _commit(tmp_path, "base", parent=None) |
| 182 | _commit(tmp_path, "next", parent=base) |
| 183 | result = runner.invoke( |
| 184 | cli, |
| 185 | ["plumbing", "commit-graph", "--stop-at", base, "-a"], |
| 186 | env=_env(tmp_path), |
| 187 | ) |
| 188 | assert result.exit_code == 0 |
| 189 | |
| 190 | |
| 191 | class TestCommitGraphCombined: |
| 192 | def test_first_parent_and_count(self, tmp_path: pathlib.Path) -> None: |
| 193 | _init_repo(tmp_path) |
| 194 | c1 = _commit(tmp_path, "c1", parent=None) |
| 195 | _commit(tmp_path, "c2", parent=c1) |
| 196 | result = runner.invoke( |
| 197 | cli, ["plumbing", "commit-graph", "--first-parent", "--count"], env=_env(tmp_path) |
| 198 | ) |
| 199 | assert result.exit_code == 0 |
| 200 | data = json.loads(result.output) |
| 201 | assert data["count"] == 2 |
| 202 | |
| 203 | def test_count_always_emits_json(self, tmp_path: pathlib.Path) -> None: |
| 204 | """--count emits JSON even when --format text is specified.""" |
| 205 | _init_repo(tmp_path) |
| 206 | _commit(tmp_path, "c1") |
| 207 | result = runner.invoke( |
| 208 | cli, |
| 209 | ["plumbing", "commit-graph", "--count", "--format", "text"], |
| 210 | env=_env(tmp_path), |
| 211 | ) |
| 212 | assert result.exit_code == 0 |
| 213 | data = json.loads(result.output) |
| 214 | assert "count" in data |
| 215 | |
| 216 | def test_invalid_format_errors(self, tmp_path: pathlib.Path) -> None: |
| 217 | _init_repo(tmp_path) |
| 218 | _commit(tmp_path, "c1") |
| 219 | result = runner.invoke( |
| 220 | cli, ["plumbing", "commit-graph", "--format", "csv"], env=_env(tmp_path) |
| 221 | ) |
| 222 | assert result.exit_code != 0 |
| 223 | data = json.loads(result.output) |
| 224 | assert "error" in data |