135 lines
4.1 KiB
Python
135 lines
4.1 KiB
Python
from __future__ import annotations
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import multiprocessing
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import os.path
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import sys
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from unittest import mock
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import pytest
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import pre_commit.constants as C
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from pre_commit import parse_shebang
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from pre_commit.languages import helpers
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from pre_commit.prefix import Prefix
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from pre_commit.util import CalledProcessError
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from testing.auto_namedtuple import auto_namedtuple
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@pytest.fixture
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def find_exe_mck():
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with mock.patch.object(parse_shebang, 'find_executable') as mck:
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yield mck
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@pytest.fixture
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def homedir_mck():
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def fake_expanduser(pth):
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assert pth == '~'
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return os.path.normpath('/home/me')
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with mock.patch.object(os.path, 'expanduser', fake_expanduser):
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yield
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def test_exe_exists_does_not_exist(find_exe_mck, homedir_mck):
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find_exe_mck.return_value = None
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assert helpers.exe_exists('ruby') is False
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def test_exe_exists_exists(find_exe_mck, homedir_mck):
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find_exe_mck.return_value = os.path.normpath('/usr/bin/ruby')
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assert helpers.exe_exists('ruby') is True
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def test_exe_exists_false_if_shim(find_exe_mck, homedir_mck):
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find_exe_mck.return_value = os.path.normpath('/foo/shims/ruby')
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assert helpers.exe_exists('ruby') is False
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def test_exe_exists_false_if_homedir(find_exe_mck, homedir_mck):
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find_exe_mck.return_value = os.path.normpath('/home/me/somedir/ruby')
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assert helpers.exe_exists('ruby') is False
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def test_exe_exists_commonpath_raises_ValueError(find_exe_mck, homedir_mck):
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find_exe_mck.return_value = os.path.normpath('/usr/bin/ruby')
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with mock.patch.object(os.path, 'commonpath', side_effect=ValueError):
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assert helpers.exe_exists('ruby') is True
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def test_exe_exists_true_when_homedir_is_slash(find_exe_mck):
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find_exe_mck.return_value = os.path.normpath('/usr/bin/ruby')
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with mock.patch.object(os.path, 'expanduser', return_value=os.sep):
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assert helpers.exe_exists('ruby') is True
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def test_basic_get_default_version():
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assert helpers.basic_get_default_version() == C.DEFAULT
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def test_basic_healthy():
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assert helpers.basic_healthy(Prefix('.'), 'default') is True
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def test_failed_setup_command_does_not_unicode_error():
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script = (
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'import sys\n'
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"sys.stderr.buffer.write(b'\\x81\\xfe')\n"
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'raise SystemExit(1)\n'
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)
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# an assertion that this does not raise `UnicodeError`
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with pytest.raises(CalledProcessError):
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helpers.run_setup_cmd(Prefix('.'), (sys.executable, '-c', script))
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def test_assert_no_additional_deps():
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with pytest.raises(AssertionError) as excinfo:
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helpers.assert_no_additional_deps('lang', ['hmmm'])
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msg, = excinfo.value.args
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assert msg == (
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'for now, pre-commit does not support additional_dependencies for '
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'lang -- '
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"you selected `additional_dependencies: ['hmmm']`"
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)
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SERIAL_FALSE = auto_namedtuple(require_serial=False)
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SERIAL_TRUE = auto_namedtuple(require_serial=True)
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def test_target_concurrency_normal():
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with mock.patch.object(multiprocessing, 'cpu_count', return_value=123):
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with mock.patch.dict(os.environ, {}, clear=True):
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assert helpers.target_concurrency(SERIAL_FALSE) == 123
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def test_target_concurrency_cpu_count_require_serial_true():
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with mock.patch.dict(os.environ, {}, clear=True):
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assert helpers.target_concurrency(SERIAL_TRUE) == 1
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def test_target_concurrency_testing_env_var():
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with mock.patch.dict(
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os.environ, {'PRE_COMMIT_NO_CONCURRENCY': '1'}, clear=True,
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):
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assert helpers.target_concurrency(SERIAL_FALSE) == 1
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def test_target_concurrency_on_travis():
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with mock.patch.dict(os.environ, {'TRAVIS': '1'}, clear=True):
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assert helpers.target_concurrency(SERIAL_FALSE) == 2
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def test_target_concurrency_cpu_count_not_implemented():
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with mock.patch.object(
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multiprocessing, 'cpu_count', side_effect=NotImplementedError,
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):
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with mock.patch.dict(os.environ, {}, clear=True):
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assert helpers.target_concurrency(SERIAL_FALSE) == 1
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def test_shuffled_is_deterministic():
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seq = [str(i) for i in range(10)]
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expected = ['4', '0', '5', '1', '8', '6', '2', '3', '7', '9']
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assert helpers._shuffled(seq) == expected
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