| import unittest |
| import os |
| import stat |
| import random |
| import shutil |
| import sys |
| import py_compile |
| import warnings |
| import imp |
| import marshal |
| from test.support import unlink, TESTFN, unload, run_unittest, TestFailed |
| |
| |
| def remove_files(name): |
| for f in (name + ".py", |
| name + ".pyc", |
| name + ".pyo", |
| name + ".pyw", |
| name + "$py.class"): |
| if os.path.exists(f): |
| os.remove(f) |
| |
| |
| class ImportTest(unittest.TestCase): |
| |
| def testCaseSensitivity(self): |
| # Brief digression to test that import is case-sensitive: if we got this |
| # far, we know for sure that "random" exists. |
| try: |
| import RAnDoM |
| except ImportError: |
| pass |
| else: |
| self.fail("import of RAnDoM should have failed (case mismatch)") |
| |
| def testDoubleConst(self): |
| # Another brief digression to test the accuracy of manifest float constants. |
| from test import double_const # don't blink -- that *was* the test |
| |
| def testImport(self): |
| def test_with_extension(ext): |
| # ext normally ".py"; perhaps ".pyw" |
| source = TESTFN + ext |
| pyo = TESTFN + ".pyo" |
| if sys.platform.startswith('java'): |
| pyc = TESTFN + "$py.class" |
| else: |
| pyc = TESTFN + ".pyc" |
| |
| with open(source, "w") as f: |
| print("# This tests Python's ability to import a", ext, "file.", file=f) |
| a = random.randrange(1000) |
| b = random.randrange(1000) |
| print("a =", a, file=f) |
| print("b =", b, file=f) |
| |
| if TESTFN in sys.modules: |
| del sys.modules[TESTFN] |
| try: |
| try: |
| mod = __import__(TESTFN) |
| except ImportError as err: |
| self.fail("import from %s failed: %s" % (ext, err)) |
| |
| self.assertEquals(mod.a, a, |
| "module loaded (%s) but contents invalid" % mod) |
| self.assertEquals(mod.b, b, |
| "module loaded (%s) but contents invalid" % mod) |
| finally: |
| unlink(source) |
| unlink(pyc) |
| unlink(pyo) |
| del sys.modules[TESTFN] |
| |
| sys.path.insert(0, os.curdir) |
| try: |
| test_with_extension(".py") |
| if sys.platform.startswith("win"): |
| for ext in ".PY", ".Py", ".pY", ".pyw", ".PYW", ".pYw": |
| test_with_extension(ext) |
| finally: |
| del sys.path[0] |
| |
| @unittest.skipUnless(os.name == 'posix', "test meaningful only on posix systems") |
| def test_execute_bit_not_copied(self): |
| # Issue 6070: under posix .pyc files got their execute bit set if |
| # the .py file had the execute bit set, but they aren't executable. |
| oldmask = os.umask(0o022) |
| sys.path.insert(0, os.curdir) |
| try: |
| fname = TESTFN + os.extsep + "py" |
| f = open(fname, 'w').close() |
| os.chmod(fname, (stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH | |
| stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH)) |
| __import__(TESTFN) |
| fn = fname + 'c' |
| if not os.path.exists(fn): |
| fn = fname + 'o' |
| if not os.path.exists(fn): raise TestFailed("__import__ did " |
| "not result in creation of either a .pyc or .pyo file") |
| s = os.stat(fn) |
| self.assertEquals(stat.S_IMODE(s.st_mode), |
| stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH) |
| finally: |
| os.umask(oldmask) |
| remove_files(TESTFN) |
| if TESTFN in sys.modules: del sys.modules[TESTFN] |
| del sys.path[0] |
| |
| def testImpModule(self): |
| # Verify that the imp module can correctly load and find .py files |
| import imp |
| x = imp.find_module("os") |
| os = imp.load_module("os", *x) |
| |
| def test_module_with_large_stack(self, module='longlist'): |
| # create module w/list of 65000 elements to test bug #561858 |
| filename = module + '.py' |
| |
| # create a file with a list of 65000 elements |
| f = open(filename, 'w+') |
| f.write('d = [\n') |
| for i in range(65000): |
| f.write('"",\n') |
| f.write(']') |
| f.close() |
| |
| # compile & remove .py file, we only need .pyc (or .pyo) |
| f = open(filename, 'r') |
| py_compile.compile(filename) |
| f.close() |
| os.unlink(filename) |
| |
| # need to be able to load from current dir |
| sys.path.append('') |
| |
| # this used to crash |
| exec('import ' + module) |
| |
| # cleanup |
| del sys.path[-1] |
| for ext in '.pyc', '.pyo': |
| fname = module + ext |
| if os.path.exists(fname): |
| os.unlink(fname) |
| |
| def test_failing_import_sticks(self): |
| source = TESTFN + ".py" |
| f = open(source, "w") |
| print("a = 1/0", file=f) |
| f.close() |
| |
| # New in 2.4, we shouldn't be able to import that no matter how often |
| # we try. |
| sys.path.insert(0, os.curdir) |
| if TESTFN in sys.modules: |
| del sys.modules[TESTFN] |
| try: |
| for i in 1, 2, 3: |
| try: |
| mod = __import__(TESTFN) |
| except ZeroDivisionError: |
| if TESTFN in sys.modules: |
| self.fail("damaged module in sys.modules on %i. try" % i) |
| else: |
| self.fail("was able to import a damaged module on %i. try" % i) |
| finally: |
| sys.path.pop(0) |
| remove_files(TESTFN) |
| |
| def test_import_name_binding(self): |
| # import x.y.z binds x in the current namespace |
| import test as x |
| import test.support |
| self.assertTrue(x is test, x.__name__) |
| self.assertTrue(hasattr(test.support, "__file__")) |
| |
| # import x.y.z as w binds z as w |
| import test.support as y |
| self.assertTrue(y is test.support, y.__name__) |
| |
| def test_import_initless_directory_warning(self): |
| with warnings.catch_warnings(): |
| # Just a random non-package directory we always expect to be |
| # somewhere in sys.path... |
| warnings.simplefilter('error', ImportWarning) |
| self.assertRaises(ImportWarning, __import__, "site-packages") |
| |
| def test_failing_reload(self): |
| # A failing reload should leave the module object in sys.modules. |
| source = TESTFN + ".py" |
| with open(source, "w") as f: |
| f.write("a = 1\nb=2\n") |
| |
| sys.path.insert(0, os.curdir) |
| try: |
| mod = __import__(TESTFN) |
| self.assertTrue(TESTFN in sys.modules, "expected module in sys.modules") |
| self.assertEquals(mod.a, 1, "module has wrong attribute values") |
| self.assertEquals(mod.b, 2, "module has wrong attribute values") |
| |
| # On WinXP, just replacing the .py file wasn't enough to |
| # convince reload() to reparse it. Maybe the timestamp didn't |
| # move enough. We force it to get reparsed by removing the |
| # compiled file too. |
| remove_files(TESTFN) |
| |
| # Now damage the module. |
| with open(source, "w") as f: |
| f.write("a = 10\nb=20//0\n") |
| |
| self.assertRaises(ZeroDivisionError, imp.reload, mod) |
| # But we still expect the module to be in sys.modules. |
| mod = sys.modules.get(TESTFN) |
| self.assertFalse(mod is None, "expected module to still be in sys.modules") |
| |
| # We should have replaced a w/ 10, but the old b value should |
| # stick. |
| self.assertEquals(mod.a, 10, "module has wrong attribute values") |
| self.assertEquals(mod.b, 2, "module has wrong attribute values") |
| |
| finally: |
| sys.path.pop(0) |
| remove_files(TESTFN) |
| if TESTFN in sys.modules: |
| del sys.modules[TESTFN] |
| |
| def test_file_to_source(self): |
| # check if __file__ points to the source file where available |
| source = TESTFN + ".py" |
| with open(source, "w") as f: |
| f.write("test = None\n") |
| |
| sys.path.insert(0, os.curdir) |
| try: |
| mod = __import__(TESTFN) |
| self.assertTrue(mod.__file__.endswith('.py')) |
| os.remove(source) |
| del sys.modules[TESTFN] |
| mod = __import__(TESTFN) |
| ext = mod.__file__[-4:] |
| self.assertTrue(ext in ('.pyc', '.pyo'), ext) |
| finally: |
| sys.path.pop(0) |
| remove_files(TESTFN) |
| if TESTFN in sys.modules: |
| del sys.modules[TESTFN] |
| |
| |
| def test_importbyfilename(self): |
| path = os.path.abspath(TESTFN) |
| try: |
| __import__(path) |
| except ImportError as err: |
| self.assertEqual("Import by filename is not supported.", |
| err.args[0]) |
| else: |
| self.fail("import by path didn't raise an exception") |
| |
| |
| class TestPycRewriting(unittest.TestCase): |
| # Test that the `co_filename` attribute on code objects always points |
| # to the right file, even when various things happen (e.g. both the .py |
| # and the .pyc file are renamed). |
| |
| module_name = "unlikely_module_name" |
| module_source = """ |
| import sys |
| code_filename = sys._getframe().f_code.co_filename |
| module_filename = __file__ |
| constant = 1 |
| def func(): |
| pass |
| func_filename = func.__code__.co_filename |
| """ |
| dir_name = os.path.abspath(TESTFN) |
| file_name = os.path.join(dir_name, module_name) + os.extsep + "py" |
| compiled_name = file_name + ("c" if __debug__ else "o") |
| |
| def setUp(self): |
| self.sys_path = sys.path[:] |
| self.orig_module = sys.modules.pop(self.module_name, None) |
| os.mkdir(self.dir_name) |
| with open(self.file_name, "w") as f: |
| f.write(self.module_source) |
| sys.path.insert(0, self.dir_name) |
| |
| def tearDown(self): |
| sys.path[:] = self.sys_path |
| if self.orig_module is not None: |
| sys.modules[self.module_name] = self.orig_module |
| else: |
| del sys.modules[self.module_name] |
| for file_name in self.file_name, self.compiled_name: |
| if os.path.exists(file_name): |
| os.remove(file_name) |
| if os.path.exists(self.dir_name): |
| shutil.rmtree(self.dir_name) |
| |
| def import_module(self): |
| ns = globals() |
| __import__(self.module_name, ns, ns) |
| return sys.modules[self.module_name] |
| |
| def test_basics(self): |
| mod = self.import_module() |
| self.assertEqual(mod.module_filename, self.file_name) |
| self.assertEqual(mod.code_filename, self.file_name) |
| self.assertEqual(mod.func_filename, self.file_name) |
| del sys.modules[self.module_name] |
| mod = self.import_module() |
| self.assertEqual(mod.module_filename, self.file_name) |
| self.assertEqual(mod.code_filename, self.file_name) |
| self.assertEqual(mod.func_filename, self.file_name) |
| |
| def test_incorrect_code_name(self): |
| py_compile.compile(self.file_name, dfile="another_module.py") |
| mod = self.import_module() |
| self.assertEqual(mod.module_filename, self.file_name) |
| self.assertEqual(mod.code_filename, self.file_name) |
| self.assertEqual(mod.func_filename, self.file_name) |
| |
| def test_module_without_source(self): |
| target = "another_module.py" |
| py_compile.compile(self.file_name, dfile=target) |
| os.remove(self.file_name) |
| mod = self.import_module() |
| self.assertEqual(mod.module_filename, self.compiled_name) |
| self.assertEqual(mod.code_filename, target) |
| self.assertEqual(mod.func_filename, target) |
| |
| def test_foreign_code(self): |
| py_compile.compile(self.file_name) |
| with open(self.compiled_name, "rb") as f: |
| header = f.read(8) |
| code = marshal.load(f) |
| constants = list(code.co_consts) |
| foreign_code = test_main.__code__ |
| pos = constants.index(1) |
| constants[pos] = foreign_code |
| code = type(code)(code.co_argcount, code.co_kwonlyargcount, |
| code.co_nlocals, code.co_stacksize, |
| code.co_flags, code.co_code, tuple(constants), |
| code.co_names, code.co_varnames, code.co_filename, |
| code.co_name, code.co_firstlineno, code.co_lnotab, |
| code.co_freevars, code.co_cellvars) |
| with open(self.compiled_name, "wb") as f: |
| f.write(header) |
| marshal.dump(code, f) |
| mod = self.import_module() |
| self.assertEqual(mod.constant.co_filename, foreign_code.co_filename) |
| |
| class PathsTests(unittest.TestCase): |
| SAMPLES = ('test', 'test\u00e4\u00f6\u00fc\u00df', 'test\u00e9\u00e8', |
| 'test\u00b0\u00b3\u00b2') |
| path = TESTFN |
| |
| def setUp(self): |
| os.mkdir(self.path) |
| self.syspath = sys.path[:] |
| |
| def tearDown(self): |
| shutil.rmtree(self.path) |
| sys.path = self.syspath |
| |
| # http://bugs.python.org/issue1293 |
| def test_trailing_slash(self): |
| f = open(os.path.join(self.path, 'test_trailing_slash.py'), 'w') |
| f.write("testdata = 'test_trailing_slash'") |
| f.close() |
| sys.path.append(self.path+'/') |
| mod = __import__("test_trailing_slash") |
| self.assertEqual(mod.testdata, 'test_trailing_slash') |
| unload("test_trailing_slash") |
| |
| # http://bugs.python.org/issue3677 |
| def _test_UNC_path(self): |
| f = open(os.path.join(self.path, 'test_trailing_slash.py'), 'w') |
| f.write("testdata = 'test_trailing_slash'") |
| f.close() |
| #create the UNC path, like \\myhost\c$\foo\bar |
| path = os.path.abspath(self.path) |
| import socket |
| hn = socket.gethostname() |
| drive = path[0] |
| unc = "\\\\%s\\%s$"%(hn, drive) |
| unc += path[2:] |
| sys.path.append(path) |
| mod = __import__("test_trailing_slash") |
| self.assertEqual(mod.testdata, 'test_trailing_slash') |
| unload("test_trailing_slash") |
| |
| if sys.platform == "win32": |
| test_UNC_path = _test_UNC_path |
| |
| |
| class RelativeImport(unittest.TestCase): |
| def tearDown(self): |
| try: |
| del sys.modules["test.relimport"] |
| except: |
| pass |
| |
| def test_relimport_star(self): |
| # This will import * from .test_import. |
| from . import relimport |
| self.assertTrue(hasattr(relimport, "RelativeImport")) |
| |
| def test_issue3221(self): |
| # Note for mergers: the 'absolute' tests from the 2.x branch |
| # are missing in Py3k because implicit relative imports are |
| # a thing of the past |
| def check_relative(): |
| exec("from . import relimport", ns) |
| # Check relative import OK with __package__ and __name__ correct |
| ns = dict(__package__='test', __name__='test.notarealmodule') |
| check_relative() |
| # Check relative import OK with only __name__ wrong |
| ns = dict(__package__='test', __name__='notarealpkg.notarealmodule') |
| check_relative() |
| # Check relative import fails with only __package__ wrong |
| ns = dict(__package__='foo', __name__='test.notarealmodule') |
| self.assertRaises(SystemError, check_relative) |
| # Check relative import fails with __package__ and __name__ wrong |
| ns = dict(__package__='foo', __name__='notarealpkg.notarealmodule') |
| self.assertRaises(SystemError, check_relative) |
| # Check relative import fails with package set to a non-string |
| ns = dict(__package__=object()) |
| self.assertRaises(ValueError, check_relative) |
| |
| def test_main(verbose=None): |
| run_unittest(ImportTest, TestPycRewriting, PathsTests, RelativeImport) |
| |
| if __name__ == '__main__': |
| # test needs to be a package, so we can do relative import |
| from test.test_import import test_main |
| test_main() |