7dda421bff
The previous fix only handled the case of the parent package of __main__ failing to initialize. Also make the "Error while finding spec" formatting slightly more appealing, and document and test that the module name must be absolute.
535 lines
23 KiB
Python
535 lines
23 KiB
Python
# tests command line execution of scripts
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import contextlib
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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 subprocess
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import textwrap
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from test import support
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from test.support.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, 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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from importlib.machinery import BuiltinImporter
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_loader = __loader__ if __loader__ is BuiltinImporter else type(__loader__)
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print('__loader__==%a' % _loader)
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print('__file__==%a' % __file__)
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print('__cached__==%a' % __cached__)
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print('__package__==%r' % __package__)
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# Check PEP 451 details
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import os.path
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if __package__ is not None:
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print('__main__ was located through the import system')
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assertIdentical(__spec__.loader, __loader__)
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expected_spec_name = os.path.splitext(os.path.basename(__file__))[0]
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if __package__:
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expected_spec_name = __package__ + "." + expected_spec_name
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assertEqual(__spec__.name, expected_spec_name)
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assertEqual(__spec__.parent, __package__)
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assertIdentical(__spec__.submodule_search_locations, None)
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assertEqual(__spec__.origin, __file__)
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if __spec__.cached is not None:
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assertEqual(__spec__.cached, __cached__)
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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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if __spec__ is not None:
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# XXX: We're not currently making __main__ available under its real name
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pass # assertIdentical(globals(), sys.modules[__spec__.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(repr(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, __isolated=False)
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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(repr(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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# Unfortunately, there's no way to automatically test the fully
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# interactive REPL, since that code path only gets executed when
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# stdin is an interactive tty.
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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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@contextlib.contextmanager
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def interactive_python(self, separate_stderr=False):
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if separate_stderr:
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p = spawn_python('-i', bufsize=1, stderr=subprocess.PIPE)
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stderr = p.stderr
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else:
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p = spawn_python('-i', bufsize=1, stderr=subprocess.STDOUT)
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stderr = p.stdout
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try:
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# Drain stderr until prompt
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while True:
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data = stderr.read(4)
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if data == b">>> ":
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break
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stderr.readline()
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yield p
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finally:
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kill_python(p)
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stderr.close()
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def check_repl_stdout_flush(self, separate_stderr=False):
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with self.interactive_python(separate_stderr) as p:
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p.stdin.write(b"print('foo')\n")
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p.stdin.flush()
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self.assertEqual(b'foo', p.stdout.readline().strip())
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def check_repl_stderr_flush(self, separate_stderr=False):
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with self.interactive_python(separate_stderr) as p:
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p.stdin.write(b"1/0\n")
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p.stdin.flush()
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stderr = p.stderr if separate_stderr else p.stdout
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self.assertIn(b'Traceback ', stderr.readline())
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self.assertIn(b'File "<stdin>"', stderr.readline())
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self.assertIn(b'ZeroDivisionError', stderr.readline())
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def test_repl_stdout_flush(self):
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self.check_repl_stdout_flush()
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def test_repl_stdout_flush_separate_stderr(self):
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self.check_repl_stdout_flush(True)
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def test_repl_stderr_flush(self):
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self.check_repl_stderr_flush()
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def test_repl_stderr_flush_separate_stderr(self):
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self.check_repl_stderr_flush(True)
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def test_basic_script(self):
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with support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.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 support.temp_dir() as script_dir:
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with support.change_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, __isolated=False)
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if verbose > 1:
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print(repr(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 support.temp_dir() as script_dir:
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with support.change_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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__isolated=False)
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if verbose > 1:
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print(repr(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 support.temp_dir() as script_dir:
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script_name = _make_test_script(script_dir, 'other')
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with support.change_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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__isolated=False)
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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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@contextlib.contextmanager
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def setup_test_pkg(self, *args):
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with support.temp_dir() as script_dir, \
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support.change_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, *args)
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yield pkg_dir
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def check_dash_m_failure(self, *args):
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rc, out, err = assert_python_failure('-m', *args, __isolated=False)
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if verbose > 1:
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print(repr(out))
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self.assertEqual(rc, 1)
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return err
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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 self.setup_test_pkg() as 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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err = self.check_dash_m_failure('test_pkg.other', *example_args)
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self.assertIn(b'ValueError', err)
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def test_dash_m_errors(self):
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# Exercise error reporting for various invalid package executions
|
|
tests = (
|
|
('builtins', br'No code object available'),
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|
('builtins.x', br'Error while finding spec.*AttributeError'),
|
|
('builtins.x.y', br'Error while finding spec.*'
|
|
br'ImportError.*No module named.*not a package'),
|
|
('os.path', br'loader.*cannot handle'),
|
|
('importlib', br'No module named.*'
|
|
br'is a package and cannot be directly executed'),
|
|
('importlib.nonexistant', br'No module named'),
|
|
('.unittest', br'Relative module names not supported'),
|
|
)
|
|
for name, regex in tests:
|
|
with self.subTest(name):
|
|
rc, _, err = assert_python_failure('-m', name)
|
|
self.assertEqual(rc, 1)
|
|
self.assertRegex(err, regex)
|
|
self.assertNotIn(b'Traceback', err)
|
|
|
|
def test_dash_m_init_traceback(self):
|
|
# These were wrapped in an ImportError and tracebacks were
|
|
# suppressed; see Issue 14285
|
|
exceptions = (ImportError, AttributeError, TypeError, ValueError)
|
|
for exception in exceptions:
|
|
exception = exception.__name__
|
|
init = "raise {0}('Exception in __init__.py')".format(exception)
|
|
with self.subTest(exception), \
|
|
self.setup_test_pkg(init) as pkg_dir:
|
|
err = self.check_dash_m_failure('test_pkg')
|
|
self.assertIn(exception.encode('ascii'), err)
|
|
self.assertIn(b'Exception in __init__.py', err)
|
|
self.assertIn(b'Traceback', err)
|
|
|
|
def test_dash_m_main_traceback(self):
|
|
# Ensure that an ImportError's traceback is reported
|
|
with self.setup_test_pkg() as pkg_dir:
|
|
main = "raise ImportError('Exception in __main__ module')"
|
|
_make_test_script(pkg_dir, '__main__', main)
|
|
err = self.check_dash_m_failure('test_pkg')
|
|
self.assertIn(b'ImportError', err)
|
|
self.assertIn(b'Exception in __main__ module', err)
|
|
self.assertIn(b'Traceback', err)
|
|
|
|
def test_pep_409_verbiage(self):
|
|
# Make sure PEP 409 syntax properly suppresses
|
|
# the context of an exception
|
|
script = textwrap.dedent("""\
|
|
try:
|
|
raise ValueError
|
|
except:
|
|
raise NameError from None
|
|
""")
|
|
with support.temp_dir() as script_dir:
|
|
script_name = _make_test_script(script_dir, 'script', script)
|
|
exitcode, stdout, stderr = assert_python_failure(script_name)
|
|
text = stderr.decode('ascii').split('\n')
|
|
self.assertEqual(len(text), 4)
|
|
self.assertTrue(text[0].startswith('Traceback'))
|
|
self.assertTrue(text[1].startswith(' File '))
|
|
self.assertTrue(text[3].startswith('NameError'))
|
|
|
|
def test_non_ascii(self):
|
|
# Mac OS X denies the creation of a file with an invalid UTF-8 name.
|
|
# Windows allows to create a name with an arbitrary bytes name, but
|
|
# Python cannot a undecodable bytes argument to a subprocess.
|
|
if (support.TESTFN_UNDECODABLE
|
|
and sys.platform not in ('win32', 'darwin')):
|
|
name = os.fsdecode(support.TESTFN_UNDECODABLE)
|
|
elif support.TESTFN_NONASCII:
|
|
name = support.TESTFN_NONASCII
|
|
else:
|
|
self.skipTest("need support.TESTFN_NONASCII")
|
|
|
|
# Issue #16218
|
|
source = 'print(ascii(__file__))\n'
|
|
script_name = _make_test_script(os.curdir, name, source)
|
|
self.addCleanup(support.unlink, script_name)
|
|
rc, stdout, stderr = assert_python_ok(script_name)
|
|
self.assertEqual(
|
|
ascii(script_name),
|
|
stdout.rstrip().decode('ascii'),
|
|
'stdout=%r stderr=%r' % (stdout, stderr))
|
|
self.assertEqual(0, rc)
|
|
|
|
def test_issue20500_exit_with_exception_value(self):
|
|
script = textwrap.dedent("""\
|
|
import sys
|
|
error = None
|
|
try:
|
|
raise ValueError('some text')
|
|
except ValueError as err:
|
|
error = err
|
|
|
|
if error:
|
|
sys.exit(error)
|
|
""")
|
|
with support.temp_dir() as script_dir:
|
|
script_name = _make_test_script(script_dir, 'script', script)
|
|
exitcode, stdout, stderr = assert_python_failure(script_name)
|
|
text = stderr.decode('ascii')
|
|
self.assertEqual(text, "some text")
|
|
|
|
|
|
def test_main():
|
|
support.run_unittest(CmdLineTest)
|
|
support.reap_children()
|
|
|
|
if __name__ == '__main__':
|
|
test_main()
|