pre-commit-hooks/tests/no_commit_to_branch_test.py at bbe110c1c15d2a8fb933db0d6b1d9fa4e214759d · emanb29/pre-commit-hooks · GitHub

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from __future__ import annotations

from unittest.mock import patch

import pytest

from pre_commit_hooks.no_commit_to_branch import _default_branch
from pre_commit_hooks.no_commit_to_branch import is_on_branch
from pre_commit_hooks.no_commit_to_branch import main
from pre_commit_hooks.util import cmd_output
from testing.util import git_commit


def test_other_branch(temp_git_dir):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', 'anotherbranch')
        assert is_on_branch({'placeholder'}) is False


def test_multi_branch(temp_git_dir):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', 'another/branch')
        assert is_on_branch({'placeholder'}) is False


def test_multi_branch_fail(temp_git_dir):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', 'another/branch')
        assert is_on_branch({'another/branch'}) is True


def test_exact_branch(temp_git_dir):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', 'branchname')
        assert is_on_branch({'branchname'}) is True


def test_main_branch_call(temp_git_dir):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', 'other')
        assert main(('--branch', 'other')) == 1


@pytest.mark.parametrize('branch_name', ('b1', 'b2'))
def test_forbid_multiple_branches(temp_git_dir, branch_name):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', branch_name)
        assert main(('--branch', 'b1', '--branch', 'b2'))


def test_branch_pattern_fail(temp_git_dir):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', 'another/branch')
        assert is_on_branch(set(), {'another/.*'}) is True


@pytest.mark.parametrize('branch_name', ('somebranch', 'another/branch'))
def test_branch_pattern_multiple_branches_fail(temp_git_dir, branch_name):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', branch_name)
        assert main(('--branch', 'somebranch', '--pattern', 'another/.*'))


def test_main_default_call(temp_git_dir):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', 'anotherbranch')
        assert main(()) == 0


def test_not_on_a_branch(temp_git_dir):
    with temp_git_dir.as_cwd():
        git_commit('--allow-empty', '-m1')
        head = cmd_output('git', 'rev-parse', 'HEAD').strip()
        cmd_output('git', 'checkout', head)
        # we're not on a branch!
        assert main(()) == 0


@pytest.mark.parametrize('branch_name', ('master', 'main'))
def test_default_branch_names(temp_git_dir, branch_name):
    with temp_git_dir.as_cwd():
        cmd_output('git', 'checkout', '-b', branch_name)
        assert main(()) == 1


def test_default_branch_falls_back_when_empty_branch(tmpdir):
    with patch(
        'pre_commit_hooks.no_commit_to_branch.cmd_output',
        return_value='origin/',
    ):
        assert _default_branch() == frozenset({'master', 'main'})


def test_default_branch_detects_from_origin(tmpdir):
    remote = tmpdir.join('remote')
    cmd_output('git', 'init', '--', str(remote))
    with remote.as_cwd():
        cmd_output('git', 'checkout', '-b', 'develop')
        git_commit('--allow-empty', '-m', 'init')

    local = tmpdir.join('local')
    cmd_output('git', 'clone', str(remote), str(local))

    with local.as_cwd():
        assert _default_branch() == frozenset({'develop'})


def test_main_blocks_detected_default_branch(tmpdir):
    remote = tmpdir.join('remote')
    cmd_output('git', 'init', '--', str(remote))
    with remote.as_cwd():
        cmd_output('git', 'checkout', '-b', 'develop')
        git_commit('--allow-empty', '-m', 'init')

    local = tmpdir.join('local')
    cmd_output('git', 'clone', str(remote), str(local))

    with local.as_cwd():
        # On detected default branch — should be blocked
        assert main(()) == 1
        # On a feature branch — should pass
        cmd_output('git', 'checkout', '-b', 'feature')
        assert main(()) == 0