mirror of
https://github.com/pre-commit/pre-commit.git
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102 lines
2.2 KiB
Python
102 lines
2.2 KiB
Python
from __future__ import unicode_literals
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import mock
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import pytest
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import os
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import os.path
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import random
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import sys
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from plumbum import local
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from pre_commit.util import clean_path_on_failure
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from pre_commit.util import entry
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from pre_commit.util import memoize_by_cwd
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@pytest.fixture
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def memoized_by_cwd():
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@memoize_by_cwd
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def func(arg):
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return arg + str(random.getrandbits(64))
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return func
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def test_memoized_by_cwd_returns_same_twice_in_a_row(memoized_by_cwd):
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ret = memoized_by_cwd('baz')
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ret2 = memoized_by_cwd('baz')
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assert ret is ret2
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def test_memoized_by_cwd_returns_different_for_different_args(memoized_by_cwd):
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ret = memoized_by_cwd('baz')
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ret2 = memoized_by_cwd('bar')
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assert ret.startswith('baz')
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assert ret2.startswith('bar')
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assert ret != ret2
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def test_memoized_by_cwd_changes_with_different_cwd(memoized_by_cwd):
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ret = memoized_by_cwd('baz')
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with local.cwd('.git'):
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ret2 = memoized_by_cwd('baz')
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assert ret != ret2
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@pytest.fixture
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def entry_func():
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@entry
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def func(argv):
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return argv
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return func
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def test_explicitly_passed_argv_are_passed(entry_func):
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input = object()
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ret = entry_func(input)
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assert ret is input
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def test_no_arguments_passed_uses_argv(entry_func):
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argv = [1, 2, 3, 4]
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with mock.patch.object(sys, 'argv', argv):
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ret = entry_func()
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assert ret == argv[1:]
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def test_clean_on_failure_noop(in_tmpdir):
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with clean_path_on_failure('foo'):
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pass
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def test_clean_path_on_failure_does_nothing_when_not_raising(in_tmpdir):
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with clean_path_on_failure('foo'):
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os.mkdir('foo')
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assert os.path.exists('foo')
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def test_clean_path_on_failure_cleans_for_normal_exception(in_tmpdir):
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class MyException(Exception):
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pass
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with pytest.raises(MyException):
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with clean_path_on_failure('foo'):
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os.mkdir('foo')
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raise MyException
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assert not os.path.exists('foo')
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def test_clean_path_on_failure_cleans_for_system_exit(in_tmpdir):
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class MySystemExit(SystemExit):
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pass
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with pytest.raises(MySystemExit):
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with clean_path_on_failure('foo'):
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os.mkdir('foo')
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raise MySystemExit
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assert not os.path.exists('foo')
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