-import unittest
+import imp
+from importlib.test.import_ import test_relative_imports
+from importlib.test.import_ import util as importlib_util
+import marshal
import os
-import stat
+import py_compile
import random
-import shutil
+import stat
import sys
-import py_compile
+import unittest
import warnings
-import imp
-import marshal
-from test.support import unlink, TESTFN, unload, run_unittest, TestFailed
+
+from test.support import (
+ EnvironmentVarGuard, TESTFN, forget, is_jython,
+ rmtree, run_unittest, unlink, unload)
def remove_files(name):
name + ".pyo",
name + ".pyw",
name + "$py.class"):
- if os.path.exists(f):
- os.remove(f)
+ unlink(f)
+ rmtree('__pycache__')
-class ImportTest(unittest.TestCase):
+class ImportTests(unittest.TestCase):
+
+ def tearDown(self):
+ unload(TESTFN)
+
+ setUp = tearDown
- def testCaseSensitivity(self):
- # Brief digression to test that import is case-sensitive: if we got this
- # far, we know for sure that "random" exists.
+ def test_case_sensitivity(self):
+ # Brief digression to test that import is case-sensitive: if we got
+ # this far, we know for sure that "random" exists.
try:
import RAnDoM
except ImportError:
else:
self.fail("import of RAnDoM should have failed (case mismatch)")
- def testDoubleConst(self):
- # Another brief digression to test the accuracy of manifest float constants.
+ def test_double_const(self):
+ # Another brief digression to test the accuracy of manifest float
+ # constants.
from test import double_const # don't blink -- that *was* the test
- def testImport(self):
+ def test_import(self):
def test_with_extension(ext):
- # ext normally ".py"; perhaps ".pyw"
+ # The extension is normally ".py", perhaps ".pyw".
source = TESTFN + ext
pyo = TESTFN + ".pyo"
- if sys.platform.startswith('java'):
+ if is_jython:
pyc = TESTFN + "$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)
+ 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)
except ImportError as err:
self.fail("import from %s failed: %s" % (ext, err))
- self.assertEquals(mod.a, a,
+ self.assertEqual(mod.a, a,
"module loaded (%s) but contents invalid" % mod)
- self.assertEquals(mod.b, b,
+ self.assertEqual(mod.b, b,
"module loaded (%s) but contents invalid" % mod)
finally:
+ forget(TESTFN)
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":
+ 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")
+ @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.
if TESTFN in sys.modules: del sys.modules[TESTFN]
del sys.path[0]
- def testImpModule(self):
+ def test_imp_module(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)
+ import imp, os
+ # XXX (ncoghlan): It would be nice to use support.CleanImport
+ # here, but that breaks because the os module registers some
+ # handlers in copy_reg on import. Since CleanImport doesn't
+ # revert that registration, the module is left in a broken
+ # state after reversion. Reinitialising the module contents
+ # and just reverting os.environ to its previous state is an OK
+ # workaround
+ orig_path = os.path
+ orig_getenv = os.getenv
+ with EnvironmentVarGuard():
+ x = imp.find_module("os")
+ new_os = imp.load_module("os", *x)
+ self.assertIs(os, new_os)
+ self.assertIs(orig_path, new_os.path)
+ self.assertIsNot(orig_getenv, new_os.getenv)
def test_module_with_large_stack(self, module='longlist'):
- # create module w/list of 65000 elements to test bug #561858
+ # Regression test for http://bugs.python.org/issue561858.
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('')
+ # Create a file with a list of 65000 elements.
+ with open(filename, 'w') as f:
+ f.write('d = [\n')
+ for i in range(65000):
+ f.write('"",\n')
+ f.write(']')
- # this used to crash
- exec('import ' + module)
+ try:
+ # Compile & remove .py file; we only need .pyc (or .pyo).
+ py_compile.compile(filename)
+ finally:
+ unlink(filename)
- # cleanup
- del sys.path[-1]
- for ext in '.pyc', '.pyo':
- fname = module + ext
- if os.path.exists(fname):
- os.unlink(fname)
+ # Need to be able to load from current dir.
+ sys.path.append('')
+
+ try:
+ # This used to crash.
+ exec('import ' + module)
+ finally:
+ # Cleanup.
+ del sys.path[-1]
+ unlink(filename + 'c')
+ unlink(filename + 'o')
def test_failing_import_sticks(self):
source = TESTFN + ".py"
- f = open(source, "w")
- print("a = 1/0", file=f)
- f.close()
+ with open(source, "w") as f:
+ print("a = 1/0", file=f)
# New in 2.4, we shouldn't be able to import that no matter how often
# we try.
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)
+ for i in [1, 2, 3]:
+ self.assertRaises(ZeroDivisionError, __import__, TESTFN)
+ self.assertNotIn(TESTFN, sys.modules,
+ "damaged module in sys.modules on %i try" % i)
finally:
- sys.path.pop(0)
+ del sys.path[0]
remove_files(TESTFN)
def test_import_name_binding(self):
def test_failing_reload(self):
# A failing reload should leave the module object in sys.modules.
- source = TESTFN + ".py"
+ source = TESTFN + os.extsep + "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")
+ self.assertIn(TESTFN, sys.modules)
+ self.assertEqual(mod.a, 1, "module has wrong attribute values")
+ self.assertEqual(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
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")
+ self.assertIsNot(mod, None, "expected module to 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")
+ self.assertEqual(mod.a, 10, "module has wrong attribute values")
+ self.assertEqual(mod.b, 2, "module has wrong attribute values")
finally:
- sys.path.pop(0)
+ del sys.path[0]
remove_files(TESTFN)
- if TESTFN in sys.modules:
- del sys.modules[TESTFN]
+ unload(TESTFN)
def test_file_to_source(self):
# check if __file__ points to the source file where available
os.remove(source)
del sys.modules[TESTFN]
mod = __import__(TESTFN)
- ext = mod.__file__[-4:]
- self.assertTrue(ext in ('.pyc', '.pyo'), ext)
+ base, ext = os.path.splitext(mod.__file__)
+ self.assertIn(ext, ('.pyc', '.pyo'))
finally:
- sys.path.pop(0)
+ del sys.path[0]
remove_files(TESTFN)
if TESTFN in sys.modules:
del sys.modules[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.assertIs(x, 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.assertIs(y, test.support, y.__name__)
- def test_importbyfilename(self):
+ def test_import_by_filename(self):
path = os.path.abspath(TESTFN)
try:
__import__(path)
self.fail("import by path didn't raise an exception")
-class TestPycRewriting(unittest.TestCase):
+class PycRewritingTests(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).
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)
+ unload(self.module_name)
+ unlink(self.file_name)
+ unlink(self.compiled_name)
+ rmtree(self.dir_name)
def import_module(self):
ns = globals()
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')
self.syspath = sys.path[:]
def tearDown(self):
- shutil.rmtree(self.path)
- sys.path = self.syspath
+ rmtree(self.path)
+ sys.path[:] = self.syspath
- # http://bugs.python.org/issue1293
+ # Regression test for 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()
+ with open(os.path.join(self.path, 'test_trailing_slash.py'), 'w') as f:
+ f.write("testdata = 'test_trailing_slash'")
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
+ # Regression test for 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$\foo\bar
+ with open(os.path.join(self.path, 'test_trailing_slash.py'), 'w') as f:
+ f.write("testdata = 'test_trailing_slash'")
+ # Create the UNC path, like \\myhost\c$\foo\bar.
path = os.path.abspath(self.path)
import socket
hn = socket.gethostname()
test_UNC_path = _test_UNC_path
-class RelativeImport(unittest.TestCase):
+class RelativeImportTests(unittest.TestCase):
+
def tearDown(self):
- try:
- del sys.modules["test.relimport"]
- except:
- pass
+ unload("test.relimport")
+ setUp = tearDown
def test_relimport_star(self):
# This will import * from .test_import.
from . import relimport
- self.assertTrue(hasattr(relimport, "RelativeImport"))
+ self.assertTrue(hasattr(relimport, "RelativeImportTests"))
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
+ #
+ # Regression test for http://bugs.python.org/issue3221.
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_absolute_import_without_future(self):
+ # If explicit relative import syntax is used, then do not try
+ # to perform an absolute import in the face of failure.
+ # Issue #7902.
+ with self.assertRaises(ImportError):
+ from .os import sep
+ self.fail("explicit relative import triggered an "
+ "implicit absolute import")
+
+
+class RelativeImportFromImportlibTests(test_relative_imports.RelativeImports):
+
+ def setUp(self):
+ self._importlib_util_flag = importlib_util.using___import__
+ importlib_util.using___import__ = True
+
+ def tearDown(self):
+ importlib_util.using___import__ = self._importlib_util_flag
+
+
def test_main(verbose=None):
- run_unittest(ImportTest, TestPycRewriting, PathsTests, RelativeImport)
+ run_unittest(ImportTests,
+ PycRewritingTests, PathsTests, RelativeImportTests,
+ RelativeImportFromImportlibTests)
+
if __name__ == '__main__':
- # test needs to be a package, so we can do relative import
+ # Test needs to be a package, so we can do relative imports.
from test.test_import import test_main
test_main()
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