penpot/scripts/test_check_commit.py
Andrey Antukh ea45507ac8 🔧 Raise commit message limits to 80 chars
Relax the subject limit from 70 to 80 characters and the body
wrap limit from 76 to 80. Merge/Revert/Reapply commits skip the
subject length check since git prepends those prefixes to an
existing subject. Update the checker, its tests, and all related
docs and memories accordingly.

AI-assisted-by: muse-spark-1.3-contributor
Signed-off-by: Andrey Antukh <niwi@niwi.nz>
2026-10-14 18:35:15 +02:00

185 lines
6.6 KiB
Python

#!/usr/bin/env python3
"""Tests for scripts/check-commit.
Run with:
python3 scripts/test_check_commit.py
Covers the body line-wrapping validator added to enforce the commit body
wrap rule documented in .serena/memories/workflow/creating-commits.md.
"""
import importlib.machinery
import importlib.util
import pathlib
import sys
import unittest
# Loading scripts/check-commit would otherwise emit scripts/__pycache__/.
sys.dont_write_bytecode = True
SCRIPT_PATH = pathlib.Path(__file__).resolve().parent / "check-commit"
def load_check_commit():
"""Load the extensionless scripts/check-commit as a module."""
loader = importlib.machinery.SourceFileLoader("check_commit", str(SCRIPT_PATH))
spec = importlib.util.spec_from_loader("check_commit", loader)
module = importlib.util.module_from_spec(spec)
loader.exec_module(module)
return module
check_commit = load_check_commit()
class BodyLineLengthTests(unittest.TestCase):
def assert_ok(self, message):
ok, error = check_commit.check_body_line_length(message)
self.assertTrue(ok, error)
self.assertIsNone(error)
def assert_fail(self, message):
ok, error = check_commit.check_body_line_length(message)
self.assertFalse(ok)
self.assertIsNotNone(error)
return error
def test_wrapped_body_passes(self):
message = (
":bug: Fix crash when opening the file menu\n"
"\n"
"The menu reused a stale reference after the file was\n"
"closed, which raised an exception on reopen.\n"
)
self.assert_ok(message)
def test_line_at_limit_passes(self):
line = "x " * 40 # 80 chars, breakable
self.assertEqual(len(line), 80)
self.assert_ok(":bug: Fix crash\n\n" + line + "\n")
def test_line_one_over_limit_fails(self):
line = "x " * 40 + "x" # 81 chars, breakable
self.assertEqual(len(line), 81)
error = self.assert_fail(":bug: Fix crash\n\n" + line + "\n")
self.assertIn("80", error)
def test_long_body_line_fails(self):
long_line = "word " * 20 # 100 chars, breakable
error = self.assert_fail(":bug: Fix crash\n\n" + long_line + "\n")
self.assertIn("80", error)
self.assertIn("line 3", error)
def test_subject_is_not_checked(self):
# The subject has its own length rule; the body validator ignores it.
subject = ":bug: " + "S" * 100
self.assert_ok(subject + "\n")
def test_url_line_passes(self):
line = (
"See https://github.com/penpot/penpot/issues/1234"
"/comments/very/long/fragment"
)
self.assert_ok(":books: Update docs\n\n" + line + "\n")
def test_trailer_passes(self):
line = "Signed-off-by: Someone With A Long Name <someone@example.com>"
self.assert_ok(":bug: Fix crash\n\nBody.\n\n" + line + "\n")
def test_unbreakable_token_passes(self):
line = "a" * 100 # no whitespace to wrap at
self.assert_ok(":bug: Fix crash\n\n" + line + "\n")
def test_blank_lines_are_ignored(self):
self.assert_ok(":bug: Fix crash\n\n\n\n")
def test_multiple_offenders_reported(self):
error = self.assert_fail(
":bug: Fix crash\n\n"
+ ("word " * 20)
+ "\n"
+ ("other " * 20)
+ "\n"
)
self.assertIn("line 3", error)
self.assertIn("line 4", error)
class ForbiddenTrailerTests(unittest.TestCase):
def assert_ok(self, message):
ok, error = check_commit.check_no_co_authored_by(message)
self.assertTrue(ok, error)
self.assertIsNone(error)
def assert_fail(self, message):
ok, error = check_commit.check_no_co_authored_by(message)
self.assertFalse(ok)
self.assertIsNotNone(error)
return error
def test_body_without_trailer_passes(self):
self.assert_ok(":bug: Fix crash\n\nBody.\n\nSigned-off-by: Someone <someone@example.com>\n")
def test_co_authored_by_fails(self):
error = self.assert_fail(":bug: Fix crash\n\nBody.\n\nCo-authored-by: Someone <someone@example.com>\n")
self.assertIn("Co-authored-by", error)
def test_co_authored_by_case_insensitive_fails(self):
self.assert_fail(":bug: Fix crash\n\nBody.\n\nco-authored-by: Someone <someone@example.com>\n")
def test_co_authored_by_in_body_fails(self):
self.assert_fail(":bug: Fix crash\n\nCo-authored-by: Someone <someone@example.com>\nBody.\n")
def test_similar_trailer_passes(self):
self.assert_ok(":bug: Fix crash\n\nBody.\n\nCo-developed-by: Someone <someone@example.com>\n")
class SubjectRulesRegressionTests(unittest.TestCase):
"""Guard the pre-existing validators against accidental breakage."""
def test_valid_subject_passes_regex(self):
ok, error = check_commit.check_regex(":bug: Fix crash on startup")
self.assertTrue(ok, error)
def test_missing_emoji_fails_regex(self):
ok, _ = check_commit.check_regex("Fix crash on startup")
self.assertFalse(ok)
def test_trailing_dot_fails(self):
ok, _ = check_commit.check_subject_no_trailing_dot(":bug: Fix crash.")
self.assertFalse(ok)
def test_subject_at_80_chars_passes(self):
# ":bug: " is 6 chars, so 74 chars of text reach exactly 80.
ok, error = check_commit.check_subject_length(":bug: " + "S" * 74)
self.assertTrue(ok, error)
def test_subject_over_80_chars_fails(self):
ok, error = check_commit.check_subject_length(":bug: " + "S" * 75)
self.assertFalse(ok)
self.assertIn("80", error)
def test_merge_subject_skips_length_check(self):
# Git generates Merge subjects from branch names; the limit is skipped.
subject = "Merge branch 'some-very-long-branch-name-that-keeps-going' into develop with extra text here"
self.assertGreater(len(subject), 80)
ok, error = check_commit.check_subject_length(subject)
self.assertTrue(ok, error)
def test_revert_subject_skips_length_check(self):
subject = 'Revert ":bug: Fix some earlier commit with a fairly long subject line already here" extra'
self.assertGreater(len(subject), 80)
ok, error = check_commit.check_subject_length(subject)
self.assertTrue(ok, error)
def test_reapply_subject_skips_length_check(self):
subject = 'Reapply ":bug: Fix some earlier commit with a fairly long subject line already here" extra'
self.assertGreater(len(subject), 80)
ok, error = check_commit.check_subject_length(subject)
self.assertTrue(ok, error)
if __name__ == "__main__":
unittest.main(verbosity=2)