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devx/tests/unit/test_check_pr_size.py
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emil 11c4a1fc9e
Post-merge / detect-and-configure (push) Failing after 18s
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DEVX-155: Replace pr_review with spec-driven CI gates and pr-review skill
2026-08-24 20:39:09 +00:00

170 lines
6.5 KiB
Python

"""Unit tests for devx.ci.check_pr_size."""
from unittest.mock import MagicMock, patch
from click.testing import CliRunner
from devx.ci.check_pr_size import (
check_size,
cli,
get_diff_stats,
has_refactoring_label,
is_excluded,
)
class TestIsExcluded:
def test_excludes_changelog(self) -> None:
assert is_excluded("CHANGELOG.md", ["CHANGELOG.md"])
def test_excludes_svg_glob(self) -> None:
assert is_excluded("docs/badges/coverage.svg", ["*.svg"])
def test_does_not_exclude_source(self) -> None:
assert not is_excluded("src/devx/ci/check_pr_size.py", ["CHANGELOG.md", "*.svg"])
def test_excludes_readme(self) -> None:
assert is_excluded("README.md", ["README.md"])
class TestCheckSize:
def test_under_limits_passes(self) -> None:
stats = [("src/main.py", 100, 50), ("tests/test_main.py", 80, 20)]
ok, detail = check_size(stats, max_lines=500, max_files=10, excluded_patterns=[])
assert ok is True
assert "250" in detail # 100+50+80+20
def test_over_lines_fails(self) -> None:
stats = [("src/main.py", 300, 300)]
ok, detail = check_size(stats, max_lines=500, max_files=10, excluded_patterns=[])
assert ok is False
assert "600" in detail
def test_over_files_fails(self) -> None:
stats = [(f"src/file{i}.py", 10, 5) for i in range(15)]
ok, detail = check_size(stats, max_lines=500, max_files=10, excluded_patterns=[])
assert ok is False
assert "15" in detail
def test_excluded_files_not_counted(self) -> None:
stats = [("CHANGELOG.md", 500, 500), ("src/main.py", 10, 5)]
ok, detail = check_size(stats, max_lines=500, max_files=10, excluded_patterns=["CHANGELOG.md"])
assert ok is True
assert "15" in detail # only 10+5
def test_empty_stats_passes(self) -> None:
ok, detail = check_size([], max_lines=500, max_files=10, excluded_patterns=[])
assert ok is True
class TestGetDiffStats:
@patch("devx.ci.check_pr_size.subprocess.run")
def test_parses_numstat_output(self, mock_run: MagicMock) -> None:
mock_run.return_value = MagicMock(
returncode=0,
stdout="10\t5\tsrc/main.py\n20\t10\ttests/test_main.py\n",
stderr="",
)
stats = get_diff_stats("origin/master", "HEAD")
assert len(stats) == 2
assert stats[0] == ("src/main.py", 10, 5)
assert stats[1] == ("tests/test_main.py", 20, 10)
@patch("devx.ci.check_pr_size.subprocess.run")
def test_handles_binary_files(self, mock_run: MagicMock) -> None:
mock_run.return_value = MagicMock(
returncode=0,
stdout="-\t-\timage.png\n",
stderr="",
)
stats = get_diff_stats("origin/master", "HEAD")
assert len(stats) == 1
assert stats[0] == ("image.png", 0, 0)
@patch("devx.ci.check_pr_size.subprocess.run")
def test_empty_output(self, mock_run: MagicMock) -> None:
mock_run.return_value = MagicMock(returncode=0, stdout="", stderr="")
stats = get_diff_stats("origin/master", "HEAD")
assert stats == []
@patch("devx.ci.check_pr_size.subprocess.run")
def test_git_diff_failure_raises(self, mock_run: MagicMock) -> None:
import pytest
mock_run.return_value = MagicMock(returncode=1, stdout="", stderr="fatal: bad ref")
with pytest.raises(Exception, match="git diff|bad ref"):
get_diff_stats("origin/master", "HEAD")
@patch("devx.ci.check_pr_size.subprocess.run")
def test_malformed_line_skipped(self, mock_run: MagicMock) -> None:
mock_run.return_value = MagicMock(
returncode=0,
stdout="not_a_valid_line\n10\t5\tsrc/main.py\n",
stderr="",
)
stats = get_diff_stats("origin/master", "HEAD")
assert len(stats) == 1
assert stats[0] == ("src/main.py", 10, 5)
class TestCli:
@patch("devx.ci.check_pr_size.subprocess.run")
def test_passes_when_small(self, mock_run: MagicMock) -> None:
mock_run.return_value = MagicMock(
returncode=0,
stdout="10\t5\tsrc/main.py\n",
stderr="",
)
runner = CliRunner()
result = runner.invoke(cli, ["--base", "origin/master", "--head", "HEAD"])
assert result.exit_code == 0
assert "OK" in result.output
@patch("devx.ci.check_pr_size.subprocess.run")
def test_fails_when_too_large(self, mock_run: MagicMock) -> None:
mock_run.return_value = MagicMock(
returncode=0,
stdout="300\t300\tsrc/main.py\n",
stderr="",
)
runner = CliRunner()
result = runner.invoke(cli, ["--base", "origin/master", "--head", "HEAD", "--max-lines", "500"])
assert result.exit_code != 0
assert "600" in result.output
@patch("devx.ci.check_pr_size.subprocess.run")
@patch("devx.ci.check_pr_size.has_refactoring_label", return_value=True)
def test_bypasses_with_refactoring_label(self, mock_label: MagicMock, mock_run: MagicMock) -> None:
mock_run.return_value = MagicMock(
returncode=0,
stdout="300\t300\tsrc/main.py\n",
stderr="",
)
runner = CliRunner()
result = runner.invoke(
cli,
["--base", "origin/master", "--head", "HEAD", "--repo", "owner/repo", "--pr-number", "42"],
)
assert result.exit_code == 0
assert "bypassed" in result.output.lower()
class TestHasRefactoringLabel:
@patch("devx.ci.check_pr_size.GiteaClient")
@patch("devx.ci.check_pr_size.get_ci_token", return_value="fake-token")
def test_returns_true_when_label_present(self, mock_token: MagicMock, mock_client_cls: MagicMock) -> None:
mock_client = mock_client_cls.return_value
mock_client.get_pr.return_value = {"labels": [{"name": "refactoring"}, {"name": "bug"}]}
assert has_refactoring_label("owner/repo", 42) is True
@patch("devx.ci.check_pr_size.GiteaClient")
@patch("devx.ci.check_pr_size.get_ci_token", return_value="fake-token")
def test_returns_false_when_label_absent(self, mock_token: MagicMock, mock_client_cls: MagicMock) -> None:
mock_client = mock_client_cls.return_value
mock_client.get_pr.return_value = {"labels": [{"name": "bug"}]}
assert has_refactoring_label("owner/repo", 42) is False
@patch("devx.ci.check_pr_size.get_ci_token", side_effect=Exception("no token"))
def test_returns_false_on_error(self, mock_token: MagicMock) -> None:
assert has_refactoring_label("owner/repo", 42) is False