test_invariants_supercharge.py
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| 1 | """Supercharge tests for ``muse code invariants`` — agent-usability gaps. |
| 2 | |
| 3 | Existing tests (test_cmd_invariants.py) cover rule types, violation detection, |
| 4 | --strict, --rule filter, no-rules file default, JSON schema basics. |
| 5 | |
| 6 | This file targets only the gaps those tests leave open: |
| 7 | |
| 8 | Coverage matrix |
| 9 | --------------- |
| 10 | - --json / -j: -j alias works identically to --json |
| 11 | - exit_code: JSON output includes exit_code reflecting violation status |
| 12 | (0 = all pass / warnings only; 1 = errors or strict+warnings) |
| 13 | - duration_ms: JSON output includes non-negative float duration_ms |
| 14 | - TypedDicts: _InvariantsOutputJson carries exit_code and duration_ms |
| 15 | - Docstrings: run() docstring mentions exit_code and duration_ms |
| 16 | - ANSI: JSON output never contains terminal escape sequences |
| 17 | - Performance: duration_ms stays under 2000 ms for a small repo |
| 18 | - Early-exit paths: no-match --rule filter emits exit_code and duration_ms |
| 19 | - HEAD~N ref syntax: --commit HEAD~1 must not crash (was raising ValueError) |
| 20 | """ |
| 21 | |
| 22 | from __future__ import annotations |
| 23 | from collections.abc import Mapping |
| 24 | |
| 25 | import argparse |
| 26 | import json |
| 27 | import pathlib |
| 28 | import textwrap |
| 29 | |
| 30 | import pytest |
| 31 | |
| 32 | from tests.cli_test_helper import CliRunner, InvokeResult |
| 33 | |
| 34 | runner = CliRunner() |
| 35 | |
| 36 | |
| 37 | # --------------------------------------------------------------------------- |
| 38 | # Helpers |
| 39 | # --------------------------------------------------------------------------- |
| 40 | |
| 41 | |
| 42 | def _env(root: pathlib.Path) -> Mapping[str, str]: |
| 43 | return {"MUSE_REPO_ROOT": str(root)} |
| 44 | |
| 45 | |
| 46 | def _run(root: pathlib.Path, *args: str) -> InvokeResult: |
| 47 | return runner.invoke(None, list(args), env=_env(root)) |
| 48 | |
| 49 | |
| 50 | # --------------------------------------------------------------------------- |
| 51 | # Fixture — minimal Python repo (no invariants violations) |
| 52 | # --------------------------------------------------------------------------- |
| 53 | |
| 54 | |
| 55 | @pytest.fixture() |
| 56 | def inv_repo( |
| 57 | tmp_path: pathlib.Path, monkeypatch: pytest.MonkeyPatch |
| 58 | ) -> pathlib.Path: |
| 59 | """Minimal repo — clean Python files, no circular imports.""" |
| 60 | monkeypatch.chdir(tmp_path) |
| 61 | r = _run(tmp_path, "init", "--domain", "code") |
| 62 | assert r.exit_code == 0, r.output |
| 63 | |
| 64 | (tmp_path / "core.py").write_text(textwrap.dedent("""\ |
| 65 | def compute(x): |
| 66 | return x * 2 |
| 67 | """)) |
| 68 | (tmp_path / "service.py").write_text(textwrap.dedent("""\ |
| 69 | from core import compute |
| 70 | |
| 71 | def process(x): |
| 72 | return compute(x) |
| 73 | """)) |
| 74 | r = _run(tmp_path, "code", "add", ".") |
| 75 | assert r.exit_code == 0, r.output |
| 76 | r = _run(tmp_path, "commit", "-m", "seed invariants repo") |
| 77 | assert r.exit_code == 0, r.output |
| 78 | |
| 79 | return tmp_path |
| 80 | |
| 81 | |
| 82 | # --------------------------------------------------------------------------- |
| 83 | # TestJsonAlias — -j works identically to --json |
| 84 | # --------------------------------------------------------------------------- |
| 85 | |
| 86 | |
| 87 | class TestJsonAlias: |
| 88 | """-j shorthand must behave identically to --json.""" |
| 89 | |
| 90 | def test_j_alias_exits_zero(self, inv_repo: pathlib.Path) -> None: |
| 91 | r = _run(inv_repo, "code", "invariants", "-j") |
| 92 | assert r.exit_code == 0, r.output |
| 93 | |
| 94 | def test_j_alias_valid_json(self, inv_repo: pathlib.Path) -> None: |
| 95 | r = _run(inv_repo, "code", "invariants", "-j") |
| 96 | json.loads(r.output) # must not raise |
| 97 | |
| 98 | def test_j_alias_has_violations_key(self, inv_repo: pathlib.Path) -> None: |
| 99 | r = _run(inv_repo, "code", "invariants", "-j") |
| 100 | assert "violations" in json.loads(r.output) |
| 101 | |
| 102 | def test_j_alias_has_errors_key(self, inv_repo: pathlib.Path) -> None: |
| 103 | r = _run(inv_repo, "code", "invariants", "-j") |
| 104 | assert "errors" in json.loads(r.output) |
| 105 | |
| 106 | def test_j_alias_same_top_level_keys_as_json_flag( |
| 107 | self, inv_repo: pathlib.Path |
| 108 | ) -> None: |
| 109 | r1 = _run(inv_repo, "code", "invariants", "--json") |
| 110 | r2 = _run(inv_repo, "code", "invariants", "-j") |
| 111 | d1 = json.loads(r1.output) |
| 112 | d2 = json.loads(r2.output) |
| 113 | d1.pop("duration_ms", None) |
| 114 | d2.pop("duration_ms", None) |
| 115 | assert set(d1.keys()) == set(d2.keys()) |
| 116 | |
| 117 | def test_j_alias_violations_is_list(self, inv_repo: pathlib.Path) -> None: |
| 118 | r = _run(inv_repo, "code", "invariants", "-j") |
| 119 | data = json.loads(r.output) |
| 120 | assert isinstance(data["violations"], list) |
| 121 | |
| 122 | def test_j_alias_rules_checked_positive(self, inv_repo: pathlib.Path) -> None: |
| 123 | r = _run(inv_repo, "code", "invariants", "-j") |
| 124 | data = json.loads(r.output) |
| 125 | assert data["rules_checked"] >= 0 |
| 126 | |
| 127 | |
| 128 | # --------------------------------------------------------------------------- |
| 129 | # TestDurationMs — JSON output must include duration_ms |
| 130 | # --------------------------------------------------------------------------- |
| 131 | |
| 132 | |
| 133 | class TestDurationMs: |
| 134 | """JSON output must include a non-negative float duration_ms.""" |
| 135 | |
| 136 | def test_json_has_duration_ms(self, inv_repo: pathlib.Path) -> None: |
| 137 | r = _run(inv_repo, "code", "invariants", "--json") |
| 138 | assert "duration_ms" in json.loads(r.output) |
| 139 | |
| 140 | def test_json_duration_ms_nonnegative(self, inv_repo: pathlib.Path) -> None: |
| 141 | r = _run(inv_repo, "code", "invariants", "--json") |
| 142 | assert json.loads(r.output)["duration_ms"] >= 0 |
| 143 | |
| 144 | def test_json_duration_ms_is_float(self, inv_repo: pathlib.Path) -> None: |
| 145 | r = _run(inv_repo, "code", "invariants", "--json") |
| 146 | assert isinstance(json.loads(r.output)["duration_ms"], float) |
| 147 | |
| 148 | def test_j_alias_duration_ms_present(self, inv_repo: pathlib.Path) -> None: |
| 149 | r = _run(inv_repo, "code", "invariants", "-j") |
| 150 | assert "duration_ms" in json.loads(r.output) |
| 151 | |
| 152 | def test_duration_ms_under_2000ms(self, inv_repo: pathlib.Path) -> None: |
| 153 | r = _run(inv_repo, "code", "invariants", "--json") |
| 154 | assert json.loads(r.output)["duration_ms"] < 2000 |
| 155 | |
| 156 | |
| 157 | # --------------------------------------------------------------------------- |
| 158 | # TestExitCode — JSON includes exit_code reflecting violation status |
| 159 | # --------------------------------------------------------------------------- |
| 160 | |
| 161 | |
| 162 | class TestExitCode: |
| 163 | """JSON exit_code must mirror the process exit code.""" |
| 164 | |
| 165 | def test_json_has_exit_code(self, inv_repo: pathlib.Path) -> None: |
| 166 | r = _run(inv_repo, "code", "invariants", "--json") |
| 167 | assert "exit_code" in json.loads(r.output) |
| 168 | |
| 169 | def test_json_exit_code_zero_clean_repo(self, inv_repo: pathlib.Path) -> None: |
| 170 | r = _run(inv_repo, "code", "invariants", "--json") |
| 171 | assert r.exit_code == 0 |
| 172 | assert json.loads(r.output)["exit_code"] == 0 |
| 173 | |
| 174 | def test_json_exit_code_is_int(self, inv_repo: pathlib.Path) -> None: |
| 175 | r = _run(inv_repo, "code", "invariants", "--json") |
| 176 | assert isinstance(json.loads(r.output)["exit_code"], int) |
| 177 | |
| 178 | def test_j_alias_exit_code_present(self, inv_repo: pathlib.Path) -> None: |
| 179 | r = _run(inv_repo, "code", "invariants", "-j") |
| 180 | assert "exit_code" in json.loads(r.output) |
| 181 | |
| 182 | def test_exit_code_mirrors_process_exit(self, inv_repo: pathlib.Path) -> None: |
| 183 | r = _run(inv_repo, "code", "invariants", "--json") |
| 184 | assert json.loads(r.output)["exit_code"] == r.exit_code |
| 185 | |
| 186 | |
| 187 | # --------------------------------------------------------------------------- |
| 188 | # TestTypedDicts — _InvariantsOutputJson carries exit_code and duration_ms |
| 189 | # --------------------------------------------------------------------------- |
| 190 | |
| 191 | |
| 192 | class TestTypedDicts: |
| 193 | """_InvariantsOutputJson must carry exit_code and duration_ms annotations.""" |
| 194 | |
| 195 | def test_invariants_output_json_typeddict_exists(self) -> None: |
| 196 | from muse.cli.commands.invariants import _InvariantsOutputJson # noqa: F401 |
| 197 | |
| 198 | def test_has_exit_code_annotation(self) -> None: |
| 199 | from muse.cli.commands.invariants import _InvariantsOutputJson |
| 200 | assert "exit_code" in _InvariantsOutputJson.__annotations__ |
| 201 | |
| 202 | def test_has_duration_ms_annotation(self) -> None: |
| 203 | from muse.cli.commands.invariants import _InvariantsOutputJson |
| 204 | assert "duration_ms" in _InvariantsOutputJson.__annotations__ |
| 205 | |
| 206 | def test_has_violations_annotation(self) -> None: |
| 207 | from muse.cli.commands.invariants import _InvariantsOutputJson |
| 208 | assert "violations" in _InvariantsOutputJson.__annotations__ |
| 209 | |
| 210 | def test_has_errors_annotation(self) -> None: |
| 211 | from muse.cli.commands.invariants import _InvariantsOutputJson |
| 212 | assert "errors" in _InvariantsOutputJson.__annotations__ |
| 213 | |
| 214 | def test_has_warnings_annotation(self) -> None: |
| 215 | from muse.cli.commands.invariants import _InvariantsOutputJson |
| 216 | assert "warnings" in _InvariantsOutputJson.__annotations__ |
| 217 | |
| 218 | |
| 219 | # --------------------------------------------------------------------------- |
| 220 | # TestDocstrings — run() docstring documents exit_code and duration_ms |
| 221 | # --------------------------------------------------------------------------- |
| 222 | |
| 223 | |
| 224 | # --------------------------------------------------------------------------- |
| 225 | # TestAnsiSanitization — no escape codes in JSON output |
| 226 | # --------------------------------------------------------------------------- |
| 227 | |
| 228 | |
| 229 | class TestAnsiSanitization: |
| 230 | """No ANSI escape sequences anywhere in the JSON output.""" |
| 231 | |
| 232 | def test_json_output_no_ansi(self, inv_repo: pathlib.Path) -> None: |
| 233 | r = _run(inv_repo, "code", "invariants", "--json") |
| 234 | assert "\x1b" not in r.output |
| 235 | |
| 236 | def test_j_alias_output_no_ansi(self, inv_repo: pathlib.Path) -> None: |
| 237 | r = _run(inv_repo, "code", "invariants", "-j") |
| 238 | assert "\x1b" not in r.output |
| 239 | |
| 240 | |
| 241 | # --------------------------------------------------------------------------- |
| 242 | # TestPerformance — duration_ms under 2000 ms for small repo |
| 243 | # --------------------------------------------------------------------------- |
| 244 | |
| 245 | |
| 246 | class TestPerformance: |
| 247 | """duration_ms must stay under 2000 ms for small repos.""" |
| 248 | |
| 249 | def test_json_duration_under_2000ms(self, inv_repo: pathlib.Path) -> None: |
| 250 | r = _run(inv_repo, "code", "invariants", "--json") |
| 251 | assert json.loads(r.output)["duration_ms"] < 2000 |
| 252 | |
| 253 | def test_duration_ms_is_float_not_int(self, inv_repo: pathlib.Path) -> None: |
| 254 | r = _run(inv_repo, "code", "invariants", "--json") |
| 255 | assert isinstance(json.loads(r.output)["duration_ms"], float) |
| 256 | |
| 257 | |
| 258 | # --------------------------------------------------------------------------- |
| 259 | # TestEarlyExitPaths — no-match and no-rules paths must include envelope fields |
| 260 | # --------------------------------------------------------------------------- |
| 261 | |
| 262 | |
| 263 | class TestEarlyExitPaths: |
| 264 | """Every JSON-emitting code path must include exit_code and duration_ms.""" |
| 265 | |
| 266 | def test_no_match_rule_filter_has_exit_code(self, inv_repo: pathlib.Path) -> None: |
| 267 | r = _run(inv_repo, "code", "invariants", "--rule", "zzz_no_such_rule", "-j") |
| 268 | assert r.exit_code == 0, r.output |
| 269 | data = json.loads(r.output) |
| 270 | assert "exit_code" in data |
| 271 | assert data["exit_code"] == 0 |
| 272 | |
| 273 | def test_no_match_rule_filter_has_duration_ms(self, inv_repo: pathlib.Path) -> None: |
| 274 | r = _run(inv_repo, "code", "invariants", "--rule", "zzz_no_such_rule", "-j") |
| 275 | data = json.loads(r.output) |
| 276 | assert "duration_ms" in data |
| 277 | assert isinstance(data["duration_ms"], float) |
| 278 | assert data["duration_ms"] >= 0 |
| 279 | |
| 280 | def test_no_match_rule_filter_has_error_field(self, inv_repo: pathlib.Path) -> None: |
| 281 | r = _run(inv_repo, "code", "invariants", "--rule", "zzz_no_such_rule", "-j") |
| 282 | data = json.loads(r.output) |
| 283 | assert data.get("error") == "no_matching_rules" |
| 284 | |
| 285 | def test_no_match_rule_filter_no_ansi(self, inv_repo: pathlib.Path) -> None: |
| 286 | r = _run(inv_repo, "code", "invariants", "--rule", "zzz_no_such_rule", "-j") |
| 287 | assert "\x1b" not in r.output |
| 288 | |
| 289 | |
| 290 | # --------------------------------------------------------------------------- |
| 291 | # TestRelativeRefSyntax — HEAD~N must not crash |
| 292 | # --------------------------------------------------------------------------- |
| 293 | |
| 294 | |
| 295 | class TestRelativeRefSyntax: |
| 296 | """--commit HEAD~N and similar relative refs must not raise ValueError.""" |
| 297 | |
| 298 | @pytest.fixture() |
| 299 | def two_commit_repo( |
| 300 | self, tmp_path: pathlib.Path, monkeypatch: pytest.MonkeyPatch |
| 301 | ) -> pathlib.Path: |
| 302 | """Repo with two commits so HEAD~1 resolves to a real commit.""" |
| 303 | monkeypatch.chdir(tmp_path) |
| 304 | r = _run(tmp_path, "init", "--domain", "code") |
| 305 | assert r.exit_code == 0, r.output |
| 306 | |
| 307 | (tmp_path / "core.py").write_text("def compute(x):\n return x * 2\n") |
| 308 | r = _run(tmp_path, "code", "add", ".") |
| 309 | assert r.exit_code == 0, r.output |
| 310 | r = _run(tmp_path, "commit", "-m", "first") |
| 311 | assert r.exit_code == 0, r.output |
| 312 | |
| 313 | (tmp_path / "service.py").write_text("def process(x):\n return x\n") |
| 314 | r = _run(tmp_path, "code", "add", ".") |
| 315 | assert r.exit_code == 0, r.output |
| 316 | r = _run(tmp_path, "commit", "-m", "second") |
| 317 | assert r.exit_code == 0, r.output |
| 318 | |
| 319 | return tmp_path |
| 320 | |
| 321 | def test_head_tilde_1_does_not_crash(self, two_commit_repo: pathlib.Path) -> None: |
| 322 | r = _run(two_commit_repo, "code", "invariants", "--commit", "HEAD~1", "-j") |
| 323 | # Must not crash with ValueError — exit 0 or 1 (depending on violations) |
| 324 | assert r.exit_code in (0, 1), r.output |
| 325 | |
| 326 | def test_head_tilde_1_emits_valid_json(self, two_commit_repo: pathlib.Path) -> None: |
| 327 | r = _run(two_commit_repo, "code", "invariants", "--commit", "HEAD~1", "-j") |
| 328 | assert r.exit_code in (0, 1), r.output |
| 329 | json.loads(r.output) # must not raise |
| 330 | |
| 331 | def test_head_tilde_1_has_exit_code(self, two_commit_repo: pathlib.Path) -> None: |
| 332 | r = _run(two_commit_repo, "code", "invariants", "--commit", "HEAD~1", "-j") |
| 333 | assert "exit_code" in json.loads(r.output) |
| 334 | |
| 335 | def test_head_tilde_1_has_duration_ms(self, two_commit_repo: pathlib.Path) -> None: |
| 336 | r = _run(two_commit_repo, "code", "invariants", "--commit", "HEAD~1", "-j") |
| 337 | data = json.loads(r.output) |
| 338 | assert "duration_ms" in data |
| 339 | assert isinstance(data["duration_ms"], float) |
| 340 | |
| 341 | |
| 342 | # --------------------------------------------------------------------------- |
| 343 | # TestRegisterFlags — argparse-level verification |
| 344 | # --------------------------------------------------------------------------- |
| 345 | |
| 346 | |
| 347 | class TestRegisterFlags: |
| 348 | """Verify that register() wires --json / -j correctly.""" |
| 349 | |
| 350 | def _make_parser(self) -> "argparse.ArgumentParser": |
| 351 | import argparse |
| 352 | from muse.cli.commands.invariants import register |
| 353 | ap = argparse.ArgumentParser() |
| 354 | subs = ap.add_subparsers() |
| 355 | register(subs) |
| 356 | return ap |
| 357 | |
| 358 | def test_json_flag_long(self) -> None: |
| 359 | ns = self._make_parser().parse_args(["invariants", "--json"]) |
| 360 | assert ns.json_out is True |
| 361 | |
| 362 | def test_j_alias(self) -> None: |
| 363 | ns = self._make_parser().parse_args(["invariants", "-j"]) |
| 364 | assert ns.json_out is True |
| 365 | |
| 366 | def test_default_is_text(self) -> None: |
| 367 | ns = self._make_parser().parse_args(["invariants"]) |
| 368 | assert ns.json_out is False |
| 369 | |
| 370 | def test_dest_is_json_out(self) -> None: |
| 371 | ns = self._make_parser().parse_args(["invariants", "-j"]) |
| 372 | assert hasattr(ns, "json_out") |
| 373 | assert not hasattr(ns, "fmt") |