Files
govoplan/tests/test_release_migration_audit.py
T
2026-09-08 12:36:36 +02:00

369 lines
18 KiB
Python

from __future__ import annotations
import importlib.util
from pathlib import Path
import sys
import tempfile
import unittest
META_ROOT = Path(__file__).resolve().parents[1]
SCRIPT = META_ROOT / "tools" / "release" / "release-migration-audit.py"
def load_audit_module():
spec = importlib.util.spec_from_file_location("release_migration_audit", SCRIPT)
if spec is None or spec.loader is None:
raise RuntimeError(f"Could not load {SCRIPT}")
module = importlib.util.module_from_spec(spec)
sys.modules[spec.name] = module
spec.loader.exec_module(module)
return module
class ReleaseMigrationAuditTests(unittest.TestCase):
def test_typed_alembic_variables_are_parsed(self) -> None:
audit = load_audit_module()
with tempfile.TemporaryDirectory(prefix="migration-audit-test-") as directory:
path = Path(directory) / "1234_example.py"
path.write_text(
"""
from __future__ import annotations
from typing import Sequence, Union
revision: str = "1234"
down_revision: Union[str, None] = "base"
depends_on: Union[str, None] = "core"
branch_labels: Union[str, Sequence[str], None] = None
""",
encoding="utf-8",
)
migration = audit.parse_migration_file("govoplan-core", path)
self.assertIsNotNone(migration)
self.assertEqual(migration.revision, "1234")
self.assertEqual(migration.down_revisions, ("base",))
self.assertEqual(migration.depends_on, ("core",))
self.assertEqual(migration.branch_labels, ())
def test_development_wrapper_uses_release_revision_metadata(self) -> None:
audit = load_audit_module()
with tempfile.TemporaryDirectory(prefix="migration-audit-test-") as directory:
root = Path(directory)
versions = root / "versions"
development = root / "dev_versions"
versions.mkdir()
development.mkdir()
release = versions / "1234_example.py"
release.write_text(
'revision = "1234"\n'
'down_revision = "base"\n'
'depends_on = "core"\n'
"branch_labels = None\n",
encoding="utf-8",
)
wrapper = development / release.name
wrapper.write_text(
"from importlib import import_module\n"
'_migration = import_module("govoplan_core.backend.migrations.versions.1234_example")\n'
"revision = _migration.revision\n"
"down_revision = _migration.down_revision\n"
"depends_on = _migration.depends_on\n"
"branch_labels = _migration.branch_labels\n",
encoding="utf-8",
)
migration = audit.parse_migration_file("govoplan-core", wrapper)
self.assertIsNotNone(migration)
self.assertEqual("1234", migration.revision)
self.assertEqual(("base",), migration.down_revisions)
self.assertEqual(("core",), migration.depends_on)
def test_literal_wrapper_alias_and_different_filename_are_resolved_without_execution(self) -> None:
audit = load_audit_module()
with tempfile.TemporaryDirectory(prefix="migration-audit-test-") as directory:
root = Path(directory)
(root / "versions").mkdir()
(root / "dev_versions").mkdir()
(root / "versions/1234_v019_example.py").write_text(
'revision = "1234"\ndown_revision = "base"\ndepends_on = "core"\nbranch_labels = None\n'
'raise AssertionError("Migration implementation must not execute")\n',
encoding="utf-8",
)
wrapper = root / "dev_versions/1234_example.py"
for alias in ("_migration", "edit_revision", "message_actions"):
with self.subTest(alias=alias):
wrapper.write_text(
"from importlib import import_module as load_migration\n"
f'{alias} = load_migration("govoplan_campaign.backend.migrations.versions." "1234_v019_example")\n'
f"revision = {alias}.revision\ndown_revision = {alias}.down_revision\n"
f"depends_on = {alias}.depends_on\nbranch_labels = {alias}.branch_labels\n"
'raise AssertionError("Wrapper must not execute")\n',
encoding="utf-8",
)
migration = audit.parse_migration_file("govoplan-campaign", wrapper)
self.assertEqual(migration.revision, "1234")
self.assertEqual(migration.down_revisions, ("base",))
self.assertEqual(migration.depends_on, ("core",))
def test_core_literal_sibling_file_wrapper_is_resolved_without_execution(self) -> None:
audit = load_audit_module()
with tempfile.TemporaryDirectory(prefix="migration-audit-test-") as directory:
root = Path(directory)
(root / "versions").mkdir()
(root / "dev_versions").mkdir()
(root / "versions/1234_example.py").write_text(
'revision = "1234"\ndown_revision = None\ndepends_on = None\nbranch_labels = None\n'
'raise AssertionError("Migration implementation must not execute")\n',
encoding="utf-8",
)
wrapper = root / "dev_versions/1234_example.py"
wrapper.write_text(
"from importlib.util import module_from_spec, spec_from_file_location\n"
"from pathlib import Path\n"
'_path = Path(__file__).resolve().parents[1] / "versions" / "1234_example.py"\n'
'_spec = spec_from_file_location("synthetic_migration", _path)\n'
"_module = module_from_spec(_spec)\n_spec.loader.exec_module(_module)\n"
"revision = _module.revision\ndown_revision = _module.down_revision\n"
"depends_on = _module.depends_on\nbranch_labels = _module.branch_labels\n",
encoding="utf-8",
)
migration = audit.parse_migration_file("govoplan-core", wrapper)
self.assertEqual(migration.revision, "1234")
self.assertEqual(migration.down_revisions, ())
def test_wrapper_rejects_dynamic_foreign_missing_or_rebound_targets(self) -> None:
audit = load_audit_module()
with tempfile.TemporaryDirectory(prefix="migration-audit-test-") as directory:
root = Path(directory)
(root / "versions").mkdir()
(root / "dev_versions").mkdir()
(root / "versions/1234_example.py").write_text('revision = "1234"\n', encoding="utf-8")
wrapper = root / "dev_versions/1234_example.py"
valid = '_migration = import_module("govoplan_campaign.backend.migrations.versions.1234_example")\n'
definitions = (
'_migration = import_module(module_name)\n',
'_migration = import_module("govoplan_mail.backend.migrations.versions.1234_example")\n',
'_migration = import_module("govoplan_campaign.backend.migrations.versions...other.1234_example")\n',
'_migration = import_module("govoplan_campaign.backend.migrations.versions.missing")\n',
valid + "_migration = another_module\n",
"import_module = another_loader\n" + valid,
"def import_module(value):\n return another_module\n" + valid,
"import another_loader as import_module\n" + valid,
valid + "class _migration:\n revision = 'another'\n",
"if condition:\n _migration = another_module\n" + valid,
valid + "del _migration\n",
)
for definition in definitions:
with self.subTest(definition=definition):
wrapper.write_text(
"from importlib import import_module\n" + definition + "revision = _migration.revision\n",
encoding="utf-8",
)
with self.assertRaisesRegex(ValueError, "unsupported or ambiguous"):
audit.parse_migration_file("govoplan-campaign", wrapper)
def test_wrapper_rejects_symlink_and_mixed_release_metadata(self) -> None:
audit = load_audit_module()
with tempfile.TemporaryDirectory(prefix="migration-audit-test-") as directory:
root = Path(directory)
(root / "versions").mkdir()
(root / "dev_versions").mkdir()
(root / "versions/1234_example.py").write_text('revision = "1234"\ndown_revision = None\n', encoding="utf-8")
(root / "versions/5678_example.py").write_text('revision = "5678"\ndown_revision = None\n', encoding="utf-8")
(root / "versions/linked.py").symlink_to(root / "versions/1234_example.py")
wrapper = root / "dev_versions/1234_example.py"
definitions = (
'_migration = import_module("govoplan_campaign.backend.migrations.versions.linked")\nrevision = _migration.revision\n',
'_migration = import_module("govoplan_campaign.backend.migrations.versions.1234_example")\n'
'_other = import_module("govoplan_campaign.backend.migrations.versions.5678_example")\n'
'revision = _migration.revision\ndown_revision = _other.down_revision\n',
)
for definition in definitions:
with self.subTest(definition=definition):
wrapper.write_text("from importlib import import_module\n" + definition, encoding="utf-8")
with self.assertRaisesRegex(ValueError, "unsupported or ambiguous"):
audit.parse_migration_file("govoplan-campaign", wrapper)
def test_unresolved_revision_expression_is_not_silently_omitted(self) -> None:
audit = load_audit_module()
with tempfile.TemporaryDirectory(prefix="migration-audit-test-") as directory:
path = Path(directory) / "1234_example.py"
path.write_text("revision = calculate_revision()\n", encoding="utf-8")
with self.assertRaisesRegex(ValueError, "Unsupported or ambiguous migration metadata"):
audit.parse_migration_file("govoplan-core", path)
def test_explicit_metadata_reexport_is_resolved_without_execution(self) -> None:
audit = load_audit_module()
with tempfile.TemporaryDirectory(prefix="migration-audit-test-") as directory:
root = Path(directory)
(root / "versions").mkdir()
(root / "dev_versions").mkdir()
(root / "versions/a234_example.py").write_text(
'revision = "1234"\ndown_revision = "base"\ndepends_on = None\nbranch_labels = None\n'
'raise AssertionError("Migration implementation must not execute")\n',
encoding="utf-8",
)
wrapper = root / "dev_versions/1234_example.py"
source = "govoplan_organizations.backend.migrations.versions.a234_example"
wrapper.write_text(f"from {source} import revision, down_revision, depends_on, branch_labels\n", encoding="utf-8")
migration = audit.parse_migration_file("govoplan-organizations", wrapper)
self.assertEqual(migration.revision, "1234")
self.assertEqual(migration.down_revisions, ("base",))
for declaration in (
f"from {source} import *\n",
f"from {source} import revision as down_revision\n",
f"from {source} import revision\nrevision = 'different'\n",
f"from {source} import revision\nimport another as revision\n",
f"from {source} import revision\ndef revision():\n pass\n",
f"from {source.replace('govoplan_organizations', 'govoplan_mail')} import revision\n",
):
with self.subTest(declaration=declaration):
wrapper.write_text(declaration, encoding="utf-8")
with self.assertRaises(ValueError):
audit.parse_migration_file("govoplan-organizations", wrapper)
def test_release_baseline_matches_current_heads_in_strict_report(self) -> None:
audit = load_audit_module()
migrations = [
audit.Migration("govoplan-core", Path("base.py"), "base", (), (), ()),
audit.Migration("govoplan-core", Path("head.py"), "head", ("base",), (), ()),
]
report = audit.build_report(
migrations,
baseline={
"version": 1,
"releases": [
{
"release": "0.1.0",
"heads": [{"owner": "govoplan-core", "revision": "head"}],
}
],
},
baseline_file=Path("docs/migration-release-baselines.json"),
workspace_root=Path("/workspace"),
)
self.assertEqual(report["current_heads"], ["head"])
self.assertEqual(report["graph_errors"], [])
self.assertEqual(report["strict_errors"], [])
def test_owner_heads_are_accepted_for_subset_installs(self) -> None:
audit = load_audit_module()
migrations = [
audit.Migration("govoplan-core", Path("base.py"), "base", (), (), ()),
audit.Migration("govoplan-core", Path("core_head.py"), "core-head", ("base",), (), ()),
]
report = audit.build_report(
migrations,
baseline={
"version": 1,
"releases": [
{
"release": "0.1.0",
"heads": [{"owner": "govoplan-files", "revision": "files-head"}],
"owner_heads": [{"owner": "govoplan-core", "revisions": ["core-head"]}],
}
],
},
baseline_file=Path("docs/migration-release-baselines.json"),
workspace_root=Path("/workspace"),
)
self.assertEqual(report["current_heads"], ["core-head"])
self.assertEqual(report["strict_errors"], [])
def test_records_current_release_baseline(self) -> None:
audit = load_audit_module()
migrations = [
audit.Migration("govoplan-core", Path("base.py"), "base", (), (), ()),
audit.Migration("govoplan-core", Path("core_head.py"), "core-head", ("base",), (), ()),
audit.Migration("govoplan-files", Path("files_head.py"), "files-head", ("core-head",), (), ()),
]
report = audit.build_report(
migrations,
baseline={"version": 1, "releases": []},
baseline_file=Path("docs/migration-release-baselines.json"),
workspace_root=Path("/workspace"),
)
baseline = audit.record_release_baseline(
{"version": 1, "releases": []},
report,
release="0.2.0",
replace=False,
)
release = baseline["releases"][0]
self.assertEqual(release["release"], "0.2.0")
self.assertEqual(release["squash_policy"], "reviewed-manual")
self.assertEqual(release["heads"], [{"owner": "govoplan-files", "revision": "files-head"}])
self.assertIn({"owner": "govoplan-core", "revisions": ["core-head"]}, release["owner_heads"])
def test_missing_down_revision_is_a_graph_error(self) -> None:
audit = load_audit_module()
migrations = [
audit.Migration("govoplan-core", Path("head.py"), "head", ("missing",), (), ()),
]
report = audit.build_report(
migrations,
baseline={"version": 1, "releases": []},
baseline_file=Path("docs/migration-release-baselines.json"),
workspace_root=Path("/workspace"),
)
self.assertIn("references missing down_revision", report["graph_errors"][0])
def test_depends_on_participates_in_graph_validation_and_heads(self) -> None:
audit = load_audit_module()
migrations = [
audit.Migration("govoplan-core", Path("core.py"), "core", (), (), ()),
audit.Migration("govoplan-files", Path("files.py"), "files", (), ("core",), ()),
]
report = audit.build_report(
migrations,
baseline={"version": 1, "releases": []},
baseline_file=Path("docs/migration-release-baselines.json"),
workspace_root=Path("/workspace"),
)
self.assertEqual(report["graph_errors"], [])
self.assertEqual(report["current_heads"], ["files"])
def test_missing_depends_on_is_a_graph_error(self) -> None:
audit = load_audit_module()
migrations = [
audit.Migration("govoplan-files", Path("files.py"), "files", (), ("missing",), ()),
]
report = audit.build_report(
migrations,
baseline={"version": 1, "releases": []},
baseline_file=Path("docs/migration-release-baselines.json"),
workspace_root=Path("/workspace"),
)
self.assertIn("references missing depends_on", report["graph_errors"][0])
def test_dev_track_does_not_emit_release_baseline_warnings(self) -> None:
audit = load_audit_module()
migrations = [
audit.Migration("govoplan-core", Path("base.py"), "base", (), (), ()),
audit.Migration("govoplan-core", Path("head.py"), "head", ("base",), (), ()),
]
report = audit.build_report(
migrations,
baseline={"version": 1, "releases": []},
baseline_file=Path("docs/migration-release-baselines.json"),
workspace_root=Path("/workspace"),
track="dev",
)
self.assertEqual(report["track"], "dev")
self.assertEqual(report["strict_errors"], [])
if __name__ == "__main__":
unittest.main()