195 lines
6.6 KiB
Python
195 lines
6.6 KiB
Python
import imp
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import os
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import os.path
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import sys
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import unittest
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from test import support
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class LockTests(unittest.TestCase):
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"""Very basic test of import lock functions."""
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def verify_lock_state(self, expected):
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self.assertEqual(imp.lock_held(), expected,
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"expected imp.lock_held() to be %r" % expected)
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def testLock(self):
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LOOPS = 50
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# The import lock may already be held, e.g. if the test suite is run
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# via "import test.autotest".
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lock_held_at_start = imp.lock_held()
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self.verify_lock_state(lock_held_at_start)
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for i in range(LOOPS):
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imp.acquire_lock()
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self.verify_lock_state(True)
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for i in range(LOOPS):
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imp.release_lock()
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# The original state should be restored now.
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self.verify_lock_state(lock_held_at_start)
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if not lock_held_at_start:
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try:
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imp.release_lock()
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except RuntimeError:
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pass
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else:
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self.fail("release_lock() without lock should raise "
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"RuntimeError")
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class ImportTests(unittest.TestCase):
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def test_find_module_encoding(self):
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fd = imp.find_module("heapq")[0]
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self.assertEqual(fd.encoding, "iso-8859-1")
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def test_issue1267(self):
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fp, filename, info = imp.find_module("pydoc")
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self.assertNotEqual(fp, None)
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self.assertEqual(fp.encoding, "iso-8859-1")
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self.assertEqual(fp.tell(), 0)
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self.assertEqual(fp.readline(), '#!/usr/bin/env python3\n')
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fp.close()
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fp, filename, info = imp.find_module("tokenize")
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self.assertNotEqual(fp, None)
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self.assertEqual(fp.encoding, "utf-8")
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self.assertEqual(fp.tell(), 0)
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self.assertEqual(fp.readline(),
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'"""Tokenization help for Python programs.\n')
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fp.close()
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def test_issue3594(self):
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temp_mod_name = 'test_imp_helper'
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sys.path.insert(0, '.')
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try:
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with open(temp_mod_name + '.py', 'w') as file:
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file.write("# coding: cp1252\nu = 'test.test_imp'\n")
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file, filename, info = imp.find_module(temp_mod_name)
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file.close()
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self.assertEquals(file.encoding, 'cp1252')
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finally:
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del sys.path[0]
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support.unlink(temp_mod_name + '.py')
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support.unlink(temp_mod_name + '.pyc')
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support.unlink(temp_mod_name + '.pyo')
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def test_issue5604(self):
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# Test cannot cover imp.load_compiled function.
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# Martin von Loewis note what shared library cannot have non-ascii
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# character because init_xxx function cannot be compiled
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# and issue never happens for dynamic modules.
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# But sources modified to follow generic way for processing pathes.
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# the return encoding could be uppercase or None
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fs_encoding = sys.getfilesystemencoding()
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fs_encoding = fs_encoding.lower() if fs_encoding else 'ascii'
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# covers utf-8 and Windows ANSI code pages
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# one non-space symbol from every page
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# (http://en.wikipedia.org/wiki/Code_page)
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known_locales = {
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'utf-8' : b'\xc3\xa4',
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'cp1250' : b'\x8C',
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'cp1251' : b'\xc0',
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'cp1252' : b'\xc0',
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'cp1253' : b'\xc1',
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'cp1254' : b'\xc0',
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'cp1255' : b'\xe0',
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'cp1256' : b'\xe0',
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'cp1257' : b'\xc0',
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'cp1258' : b'\xc0',
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}
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special_char = known_locales.get(fs_encoding)
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if not special_char:
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self.skipTest("can't run this test with %s as filesystem encoding"
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% fs_encoding)
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decoded_char = special_char.decode(fs_encoding)
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temp_mod_name = 'test_imp_helper_' + decoded_char
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test_package_name = 'test_imp_helper_package_' + decoded_char
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init_file_name = os.path.join(test_package_name, '__init__.py')
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try:
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# if the curdir is not in sys.path the test fails when run with
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# ./python ./Lib/test/regrtest.py test_imp
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sys.path.insert(0, os.curdir)
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with open(temp_mod_name + '.py', 'w') as file:
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file.write('a = 1\n')
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file, filename, info = imp.find_module(temp_mod_name)
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self.assertIsNotNone(file)
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self.assertTrue(filename[:-3].endswith(temp_mod_name))
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self.assertEqual(info[0], '.py')
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self.assertEqual(info[1], 'U')
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self.assertEqual(info[2], imp.PY_SOURCE)
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mod = imp.load_module(temp_mod_name, file, filename, info)
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self.assertEqual(mod.a, 1)
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file.close()
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mod = imp.load_source(temp_mod_name, temp_mod_name + '.py')
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self.assertEqual(mod.a, 1)
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mod = imp.load_compiled(temp_mod_name, temp_mod_name + '.pyc')
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self.assertEqual(mod.a, 1)
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if not os.path.exists(test_package_name):
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os.mkdir(test_package_name)
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with open(init_file_name, 'w') as file:
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file.write('b = 2\n')
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package = imp.load_package(test_package_name, test_package_name)
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self.assertEqual(package.b, 2)
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finally:
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del sys.path[0]
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for ext in ('.py', '.pyc', '.pyo'):
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support.unlink(temp_mod_name + ext)
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support.unlink(init_file_name + ext)
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support.rmtree(test_package_name)
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class ReloadTests(unittest.TestCase):
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"""Very basic tests to make sure that imp.reload() operates just like
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reload()."""
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def test_source(self):
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# XXX (ncoghlan): It would be nice to use test_support.CleanImport
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# here, but that breaks because the os module registers some
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# handlers in copy_reg on import. Since CleanImport doesn't
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# revert that registration, the module is left in a broken
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# state after reversion. Reinitialising the module contents
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# and just reverting os.environ to its previous state is an OK
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# workaround
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with support.EnvironmentVarGuard():
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import os
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imp.reload(os)
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def test_extension(self):
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with support.CleanImport('time'):
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import time
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imp.reload(time)
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def test_builtin(self):
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with support.CleanImport('marshal'):
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import marshal
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imp.reload(marshal)
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def test_main():
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tests = [
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ImportTests,
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ReloadTests,
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]
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try:
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import _thread
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except ImportError:
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pass
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else:
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tests.append(LockTests)
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support.run_unittest(*tests)
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if __name__ == "__main__":
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test_main()
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