mirror of
https://github.com/pre-commit/pre-commit.git
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143 lines
4.4 KiB
Python
143 lines
4.4 KiB
Python
# encoding: utf-8
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from __future__ import unicode_literals
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from contextlib import contextmanager
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import mock
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import pytest
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from pre_commit.file_classifier.classifier import _file_is_binary
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from pre_commit.file_classifier.classifier import _guess_types_from_extension
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from pre_commit.file_classifier.classifier import _guess_types_from_shebang
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from pre_commit.file_classifier.classifier import _read_interpreter_from_shebang # noqa
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from pre_commit.file_classifier.classifier import classify
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from pre_commit.git import GIT_MODE_EXECUTABLE
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from pre_commit.git import GIT_MODE_FILE
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from pre_commit.git import GIT_MODE_SUBMODULE
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from pre_commit.git import GIT_MODE_SYMLINK
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@contextmanager
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def mock_open(read_data):
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# mock_open doesn't support reading binary data :\
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# https://bugs.python.org/issue23004
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with mock.patch('io.open') as m:
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mock_read = m.return_value.__enter__().read
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mock_read.return_value = read_data
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yield m
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@pytest.mark.parametrize('path,data,mode,expected', [
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(
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'test.py',
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b'def main():\n pass\n',
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GIT_MODE_FILE,
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['file', 'text', 'python', 'nonexecutable'],
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),
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(
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'Makefile',
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b'test:\n\ttac /etc/passwd\n',
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GIT_MODE_FILE,
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['file', 'text', 'make', 'nonexecutable'],
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),
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(
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'delete-everything',
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b'#!/bin/bash\nrm -rf /\n',
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GIT_MODE_EXECUTABLE,
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['file', 'text', 'shell', 'executable'],
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),
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(
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'bin/bash',
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b'\x7f\x45\x4c\x46\x02\x01\x01',
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GIT_MODE_EXECUTABLE,
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['file', 'binary', 'executable'],
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),
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(
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'modules/apache2',
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None,
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GIT_MODE_SUBMODULE,
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['submodule'],
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),
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(
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'some/secret',
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None,
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GIT_MODE_SYMLINK,
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['symlink'],
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),
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])
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def test_classify(path, data, mode, expected):
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with mock_open(data):
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assert set(classify(path, mode)) == set(expected)
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def test_classify_invalid():
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# should raise ValueError if given a mode that it doesn't know about
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with pytest.raises(ValueError):
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classify('some_path', 9999)
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@pytest.mark.parametrize('path,expected', [
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('/hello/foo.py', ['python']),
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('a/b/c/d/e.rb', ['ruby']),
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('derp.sh', ['shell']),
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('derp.tmpl.sh', ['shell']),
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('', []),
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('derpsh', []),
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('\x7f\x45\x4c\x46\x02\x01\x01\x00\x00', []),
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])
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def test_guess_types_from_extension(path, expected):
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assert set(_guess_types_from_extension(path)) == set(expected)
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@pytest.mark.parametrize('data,expected', [
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(b'#!/usr/bin/env python3\nasdf', ['python']),
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(b'#!/usr/bin/env /usr/bin/python2.7\nasdf', ['python']),
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(b'#!/bin/bash -euxm', ['shell']),
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(b'#!/bin/sh -euxm', ['shell']),
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(b'', []),
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(b'\x7f\x45\x4c\x46\x02\x01\x01\x00\x00', []),
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])
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def test_guess_types_from_shebang(data, expected):
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with mock_open(data):
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assert set(_guess_types_from_shebang('/etc/passwd')) == set(expected)
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@pytest.mark.parametrize('data,expected', [
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(b'#!/usr/bin/env python3\nasdf', 'python3'),
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(b'#!/bin/bash -euxm', 'bash'),
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(b'#!/bin/bash -e -u -x -m', 'bash'),
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(b'#! /usr/bin/python ', 'python'),
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(b'what is this', None),
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(b'', None),
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(b'#!\n/usr/bin/python', None),
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(b'\n#!/usr/bin/python', None),
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('#!/usr/bin/énv python3\nasdf'.encode('utf8'), None),
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(b'#! ', None),
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(b'\x7f\x45\x4c\x46\x02\x01\x01\x00\x00', None),
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(b'#!\x7f\x45\x4c\x46\x02\x01\x01\x00\x00', None),
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])
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def test_read_interpreter_from_shebang(data, expected):
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with mock_open(data) as m:
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assert _read_interpreter_from_shebang('/etc/passwd') == expected
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m.assert_called_once_with('/etc/passwd', 'rb')
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@pytest.mark.parametrize('data,expected', [
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(b'hello world', False),
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(b'', False),
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('éóñəå ⊂(◉‿◉)つ(ノ≥∇≤)ノ'.encode('utf8'), False),
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('¯\_(ツ)_/¯'.encode('utf8'), False),
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('♪┏(・o･)┛♪┗ ( ･o･) ┓♪┏ ( ) ┛♪┗ (･o･ ) ┓♪┏(･o･)┛♪'.encode('utf8'), False),
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('éóñå'.encode('latin1'), False),
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(b'hello world\x00', True),
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(b'\x7f\x45\x4c\x46\x02\x01\x01', True), # first few bytes of /bin/bash
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(b'\x43\x92\xd9\x0f\xaf\x32\x2c', True), # some /dev/urandom output
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])
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def test_file_is_binary(data, expected):
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with mock_open(data) as m:
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assert _file_is_binary('/etc/passwd') is expected
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m.assert_called_once_with('/etc/passwd', 'rb')
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