import contextlib import os.path import shutil import sys import pytest from pre_commit import parse_shebang from pre_commit.envcontext import envcontext from pre_commit.envcontext import Var from pre_commit.util import make_executable def _echo_exe() -> str: exe = shutil.which('echo') assert exe is not None return exe def test_file_doesnt_exist(): assert parse_shebang.parse_filename('herp derp derp') == () def test_simple_case(tmpdir): x = tmpdir.join('f') x.write('#!/usr/bin/env echo') make_executable(x.strpath) assert parse_shebang.parse_filename(x.strpath) == ('echo',) def test_find_executable_full_path(): assert parse_shebang.find_executable(sys.executable) == sys.executable def test_find_executable_on_path(): assert parse_shebang.find_executable('echo') == _echo_exe() def test_find_executable_not_found_none(): assert parse_shebang.find_executable('not-a-real-executable') is None def write_executable(shebang, filename='run'): os.mkdir('bin') path = os.path.join('bin', filename) with open(path, 'w') as f: f.write(f'#!{shebang}') make_executable(path) return path @contextlib.contextmanager def bin_on_path(): bindir = os.path.join(os.getcwd(), 'bin') with envcontext((('PATH', (bindir, os.pathsep, Var('PATH'))),)): yield def test_find_executable_path_added(in_tmpdir): path = os.path.abspath(write_executable('/usr/bin/env sh')) assert parse_shebang.find_executable('run') is None with bin_on_path(): assert parse_shebang.find_executable('run') == path def test_find_executable_path_ext(in_tmpdir): """Windows exports PATHEXT as a list of extensions to automatically add to executables when doing PATH searching. """ exe_path = os.path.abspath( write_executable('/usr/bin/env sh', filename='run.myext'), ) env_path = {'PATH': os.path.dirname(exe_path)} env_path_ext = dict(env_path, PATHEXT=os.pathsep.join(('.exe', '.myext'))) assert parse_shebang.find_executable('run') is None assert parse_shebang.find_executable('run', _environ=env_path) is None ret = parse_shebang.find_executable('run.myext', _environ=env_path) assert ret == exe_path ret = parse_shebang.find_executable('run', _environ=env_path_ext) assert ret == exe_path def test_normexe_does_not_exist(): with pytest.raises(OSError) as excinfo: parse_shebang.normexe('i-dont-exist-lol') assert excinfo.value.args == ('Executable `i-dont-exist-lol` not found',) def test_normexe_does_not_exist_sep(): with pytest.raises(OSError) as excinfo: parse_shebang.normexe('./i-dont-exist-lol') assert excinfo.value.args == ('Executable `./i-dont-exist-lol` not found',) @pytest.mark.xfail(os.name == 'nt', reason='posix only') def test_normexe_not_executable(tmpdir): # pragma: win32 no cover tmpdir.join('exe').ensure() with tmpdir.as_cwd(), pytest.raises(OSError) as excinfo: parse_shebang.normexe('./exe') assert excinfo.value.args == ('Executable `./exe` is not executable',) def test_normexe_is_a_directory(tmpdir): with tmpdir.as_cwd(): tmpdir.join('exe').ensure_dir() exe = os.path.join('.', 'exe') with pytest.raises(OSError) as excinfo: parse_shebang.normexe(exe) msg, = excinfo.value.args assert msg == f'Executable `{exe}` is a directory' def test_normexe_already_full_path(): assert parse_shebang.normexe(sys.executable) == sys.executable def test_normexe_gives_full_path(): assert parse_shebang.normexe('echo') == _echo_exe() assert os.sep in _echo_exe() def test_normalize_cmd_trivial(): cmd = (_echo_exe(), 'hi') assert parse_shebang.normalize_cmd(cmd) == cmd def test_normalize_cmd_PATH(): cmd = ('echo', '--version') expected = (_echo_exe(), '--version') assert parse_shebang.normalize_cmd(cmd) == expected def test_normalize_cmd_shebang(in_tmpdir): echo = _echo_exe().replace(os.sep, '/') path = write_executable(echo) assert parse_shebang.normalize_cmd((path,)) == (echo, path) def test_normalize_cmd_PATH_shebang_full_path(in_tmpdir): echo = _echo_exe().replace(os.sep, '/') path = write_executable(echo) with bin_on_path(): ret = parse_shebang.normalize_cmd(('run',)) assert ret == (echo, os.path.abspath(path)) def test_normalize_cmd_PATH_shebang_PATH(in_tmpdir): echo = _echo_exe() path = write_executable('/usr/bin/env echo') with bin_on_path(): ret = parse_shebang.normalize_cmd(('run',)) assert ret == (echo, os.path.abspath(path))