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368 lines
16 KiB
Python
368 lines
16 KiB
Python
# tests command line execution of scripts
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import importlib
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import importlib.machinery
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import zipimport
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import unittest
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import sys
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import os
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import os.path
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import py_compile
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import textwrap
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from test import support
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from test.script_helper import (
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make_pkg, make_script, make_zip_pkg, make_zip_script,
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assert_python_ok, assert_python_failure, temp_dir,
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spawn_python, kill_python)
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verbose = support.verbose
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example_args = ['test1', 'test2', 'test3']
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test_source = """\
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# Script may be run with optimisation enabled, so don't rely on assert
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# statements being executed
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def assertEqual(lhs, rhs):
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if lhs != rhs:
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raise AssertionError('%r != %r' % (lhs, rhs))
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def assertIdentical(lhs, rhs):
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if lhs is not rhs:
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raise AssertionError('%r is not %r' % (lhs, rhs))
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# Check basic code execution
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result = ['Top level assignment']
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def f():
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result.append('Lower level reference')
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f()
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assertEqual(result, ['Top level assignment', 'Lower level reference'])
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# Check population of magic variables
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assertEqual(__name__, '__main__')
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_loader = __loader__ if isinstance(__loader__, type) else type(__loader__)
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print('__loader__==%a' % _loader)
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print('__file__==%a' % __file__)
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assertEqual(__cached__, None)
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print('__package__==%r' % __package__)
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# Check the sys module
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import sys
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assertIdentical(globals(), sys.modules[__name__].__dict__)
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from test import test_cmd_line_script
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example_args_list = test_cmd_line_script.example_args
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assertEqual(sys.argv[1:], example_args_list)
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print('sys.argv[0]==%a' % sys.argv[0])
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print('sys.path[0]==%a' % sys.path[0])
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# Check the working directory
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import os
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print('cwd==%a' % os.getcwd())
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"""
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def _make_test_script(script_dir, script_basename, source=test_source):
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to_return = make_script(script_dir, script_basename, source)
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importlib.invalidate_caches()
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return to_return
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def _make_test_zip_pkg(zip_dir, zip_basename, pkg_name, script_basename,
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source=test_source, depth=1):
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to_return = make_zip_pkg(zip_dir, zip_basename, pkg_name, script_basename,
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source, depth)
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importlib.invalidate_caches()
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return to_return
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# There's no easy way to pass the script directory in to get
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# -m to work (avoiding that is the whole point of making
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# directories and zipfiles executable!)
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# So we fake it for testing purposes with a custom launch script
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launch_source = """\
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import sys, os.path, runpy
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sys.path.insert(0, %s)
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runpy._run_module_as_main(%r)
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"""
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def _make_launch_script(script_dir, script_basename, module_name, path=None):
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if path is None:
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path = "os.path.dirname(__file__)"
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else:
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path = repr(path)
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source = launch_source % (path, module_name)
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to_return = make_script(script_dir, script_basename, source)
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importlib.invalidate_caches()
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return to_return
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class CmdLineTest(unittest.TestCase):
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def _check_output(self, script_name, exit_code, data,
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expected_file, expected_argv0,
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expected_path0, expected_package,
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expected_loader):
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if verbose > 1:
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print("Output from test script %r:" % script_name)
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print(data)
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self.assertEqual(exit_code, 0)
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printed_loader = '__loader__==%a' % expected_loader
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printed_file = '__file__==%a' % expected_file
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printed_package = '__package__==%r' % expected_package
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printed_argv0 = 'sys.argv[0]==%a' % expected_argv0
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printed_path0 = 'sys.path[0]==%a' % expected_path0
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printed_cwd = 'cwd==%a' % os.getcwd()
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if verbose > 1:
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print('Expected output:')
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print(printed_file)
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print(printed_package)
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print(printed_argv0)
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print(printed_cwd)
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self.assertIn(printed_loader.encode('utf-8'), data)
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self.assertIn(printed_file.encode('utf-8'), data)
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self.assertIn(printed_package.encode('utf-8'), data)
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self.assertIn(printed_argv0.encode('utf-8'), data)
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self.assertIn(printed_path0.encode('utf-8'), data)
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self.assertIn(printed_cwd.encode('utf-8'), data)
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def _check_script(self, script_name, expected_file,
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expected_argv0, expected_path0,
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expected_package, expected_loader,
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*cmd_line_switches):
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if not __debug__:
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cmd_line_switches += ('-' + 'O' * sys.flags.optimize,)
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run_args = cmd_line_switches + (script_name,) + tuple(example_args)
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rc, out, err = assert_python_ok(*run_args)
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self._check_output(script_name, rc, out + err, expected_file,
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expected_argv0, expected_path0,
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expected_package, expected_loader)
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def _check_import_error(self, script_name, expected_msg,
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*cmd_line_switches):
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run_args = cmd_line_switches + (script_name,)
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rc, out, err = assert_python_failure(*run_args)
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if verbose > 1:
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print('Output from test script %r:' % script_name)
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print(err)
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print('Expected output: %r' % expected_msg)
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self.assertIn(expected_msg.encode('utf-8'), err)
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def test_dash_c_loader(self):
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rc, out, err = assert_python_ok("-c", "print(__loader__)")
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expected = repr(importlib.machinery.BuiltinImporter).encode("utf-8")
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self.assertIn(expected, out)
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def test_stdin_loader(self):
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p = spawn_python()
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try:
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p.stdin.write(b"print(__loader__)\n")
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p.stdin.flush()
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finally:
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out = kill_python(p)
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expected = repr(importlib.machinery.BuiltinImporter).encode("utf-8")
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self.assertIn(expected, out)
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def test_basic_script(self):
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, 'script')
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self._check_script(script_name, script_name, script_name,
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script_dir, None,
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importlib.machinery.SourceFileLoader)
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def test_script_compiled(self):
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, 'script')
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py_compile.compile(script_name, doraise=True)
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os.remove(script_name)
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pyc_file = support.make_legacy_pyc(script_name)
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self._check_script(pyc_file, pyc_file,
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pyc_file, script_dir, None,
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importlib.machinery.SourcelessFileLoader)
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def test_directory(self):
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, '__main__')
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self._check_script(script_dir, script_name, script_dir,
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script_dir, '',
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importlib.machinery.SourceFileLoader)
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def test_directory_compiled(self):
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, '__main__')
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py_compile.compile(script_name, doraise=True)
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os.remove(script_name)
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pyc_file = support.make_legacy_pyc(script_name)
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self._check_script(script_dir, pyc_file, script_dir,
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script_dir, '',
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importlib.machinery.SourcelessFileLoader)
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def test_directory_error(self):
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with temp_dir() as script_dir:
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msg = "can't find '__main__' module in %r" % script_dir
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self._check_import_error(script_dir, msg)
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def test_zipfile(self):
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, '__main__')
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zip_name, run_name = make_zip_script(script_dir, 'test_zip', script_name)
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self._check_script(zip_name, run_name, zip_name, zip_name, '',
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zipimport.zipimporter)
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def test_zipfile_compiled(self):
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, '__main__')
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compiled_name = py_compile.compile(script_name, doraise=True)
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zip_name, run_name = make_zip_script(script_dir, 'test_zip', compiled_name)
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self._check_script(zip_name, run_name, zip_name, zip_name, '',
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zipimport.zipimporter)
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def test_zipfile_error(self):
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, 'not_main')
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zip_name, run_name = make_zip_script(script_dir, 'test_zip', script_name)
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msg = "can't find '__main__' module in %r" % zip_name
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self._check_import_error(zip_name, msg)
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def test_module_in_package(self):
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with temp_dir() as script_dir:
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pkg_dir = os.path.join(script_dir, 'test_pkg')
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make_pkg(pkg_dir)
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script_name = _make_test_script(pkg_dir, 'script')
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launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.script')
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self._check_script(launch_name, script_name, script_name,
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script_dir, 'test_pkg',
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importlib.machinery.SourceFileLoader)
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def test_module_in_package_in_zipfile(self):
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with temp_dir() as script_dir:
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zip_name, run_name = _make_test_zip_pkg(script_dir, 'test_zip', 'test_pkg', 'script')
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launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.script', zip_name)
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self._check_script(launch_name, run_name, run_name,
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zip_name, 'test_pkg', zipimport.zipimporter)
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def test_module_in_subpackage_in_zipfile(self):
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with temp_dir() as script_dir:
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zip_name, run_name = _make_test_zip_pkg(script_dir, 'test_zip', 'test_pkg', 'script', depth=2)
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launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.test_pkg.script', zip_name)
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self._check_script(launch_name, run_name, run_name,
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zip_name, 'test_pkg.test_pkg',
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zipimport.zipimporter)
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def test_package(self):
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with temp_dir() as script_dir:
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pkg_dir = os.path.join(script_dir, 'test_pkg')
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make_pkg(pkg_dir)
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script_name = _make_test_script(pkg_dir, '__main__')
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launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg')
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self._check_script(launch_name, script_name,
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script_name, script_dir, 'test_pkg',
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importlib.machinery.SourceFileLoader)
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def test_package_compiled(self):
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with temp_dir() as script_dir:
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pkg_dir = os.path.join(script_dir, 'test_pkg')
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make_pkg(pkg_dir)
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script_name = _make_test_script(pkg_dir, '__main__')
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compiled_name = py_compile.compile(script_name, doraise=True)
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os.remove(script_name)
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pyc_file = support.make_legacy_pyc(script_name)
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launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg')
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self._check_script(launch_name, pyc_file,
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pyc_file, script_dir, 'test_pkg',
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importlib.machinery.SourcelessFileLoader)
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def test_package_error(self):
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with temp_dir() as script_dir:
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pkg_dir = os.path.join(script_dir, 'test_pkg')
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make_pkg(pkg_dir)
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msg = ("'test_pkg' is a package and cannot "
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"be directly executed")
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launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg')
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self._check_import_error(launch_name, msg)
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def test_package_recursion(self):
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with temp_dir() as script_dir:
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pkg_dir = os.path.join(script_dir, 'test_pkg')
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make_pkg(pkg_dir)
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main_dir = os.path.join(pkg_dir, '__main__')
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make_pkg(main_dir)
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msg = ("Cannot use package as __main__ module; "
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"'test_pkg' is a package and cannot "
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"be directly executed")
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launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg')
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self._check_import_error(launch_name, msg)
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def test_issue8202(self):
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# Make sure package __init__ modules see "-m" in sys.argv0 while
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# searching for the module to execute
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with temp_dir() as script_dir:
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with support.temp_cwd(path=script_dir):
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pkg_dir = os.path.join(script_dir, 'test_pkg')
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make_pkg(pkg_dir, "import sys; print('init_argv0==%r' % sys.argv[0])")
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script_name = _make_test_script(pkg_dir, 'script')
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rc, out, err = assert_python_ok('-m', 'test_pkg.script', *example_args)
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if verbose > 1:
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print(out)
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expected = "init_argv0==%r" % '-m'
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self.assertIn(expected.encode('utf-8'), out)
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self._check_output(script_name, rc, out,
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script_name, script_name, '', 'test_pkg',
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importlib.machinery.SourceFileLoader)
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def test_issue8202_dash_c_file_ignored(self):
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# Make sure a "-c" file in the current directory
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# does not alter the value of sys.path[0]
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with temp_dir() as script_dir:
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with support.temp_cwd(path=script_dir):
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with open("-c", "w") as f:
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f.write("data")
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rc, out, err = assert_python_ok('-c',
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'import sys; print("sys.path[0]==%r" % sys.path[0])')
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if verbose > 1:
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print(out)
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expected = "sys.path[0]==%r" % ''
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self.assertIn(expected.encode('utf-8'), out)
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def test_issue8202_dash_m_file_ignored(self):
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# Make sure a "-m" file in the current directory
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# does not alter the value of sys.path[0]
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, 'other')
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with support.temp_cwd(path=script_dir):
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with open("-m", "w") as f:
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f.write("data")
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rc, out, err = assert_python_ok('-m', 'other', *example_args)
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self._check_output(script_name, rc, out,
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script_name, script_name, '', '',
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importlib.machinery.SourceFileLoader)
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def test_dash_m_error_code_is_one(self):
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# If a module is invoked with the -m command line flag
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# and results in an error that the return code to the
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# shell is '1'
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with temp_dir() as script_dir:
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with support.temp_cwd(path=script_dir):
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pkg_dir = os.path.join(script_dir, 'test_pkg')
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make_pkg(pkg_dir)
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script_name = _make_test_script(pkg_dir, 'other',
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"if __name__ == '__main__': raise ValueError")
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rc, out, err = assert_python_failure('-m', 'test_pkg.other', *example_args)
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if verbose > 1:
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print(out)
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self.assertEqual(rc, 1)
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def test_pep_409_verbiage(self):
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# Make sure PEP 409 syntax properly suppresses
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# the context of an exception
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script = textwrap.dedent("""\
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try:
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raise ValueError
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except:
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raise NameError from None
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""")
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with temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, 'script', script)
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exitcode, stdout, stderr = assert_python_failure(script_name)
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text = stderr.decode('ascii').split('\n')
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self.assertEqual(len(text), 4)
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self.assertTrue(text[0].startswith('Traceback'))
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self.assertTrue(text[1].startswith(' File '))
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self.assertTrue(text[3].startswith('NameError'))
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def test_main():
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support.run_unittest(CmdLineTest)
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support.reap_children()
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if __name__ == '__main__':
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test_main()
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