676 lines
24 KiB
Python
676 lines
24 KiB
Python
import errno
|
|
import imp
|
|
import marshal
|
|
import os
|
|
import py_compile
|
|
import random
|
|
import stat
|
|
import struct
|
|
import sys
|
|
import unittest
|
|
import textwrap
|
|
import shutil
|
|
|
|
from test.test_support import (unlink, TESTFN, unload, run_unittest, rmtree,
|
|
is_jython, check_warnings, EnvironmentVarGuard)
|
|
from test import symlink_support
|
|
from test import script_helper
|
|
|
|
def _files(name):
|
|
return (name + os.extsep + "py",
|
|
name + os.extsep + "pyc",
|
|
name + os.extsep + "pyo",
|
|
name + os.extsep + "pyw",
|
|
name + "$py.class")
|
|
|
|
def chmod_files(name):
|
|
for f in _files(name):
|
|
try:
|
|
os.chmod(f, 0600)
|
|
except OSError as exc:
|
|
if exc.errno != errno.ENOENT:
|
|
raise
|
|
|
|
def remove_files(name):
|
|
for f in _files(name):
|
|
unlink(f)
|
|
|
|
|
|
class ImportTests(unittest.TestCase):
|
|
|
|
def tearDown(self):
|
|
unload(TESTFN)
|
|
setUp = tearDown
|
|
|
|
def test_case_sensitivity(self):
|
|
# Brief digression to test that import is case-sensitive: if we got
|
|
# this far, we know for sure that "random" exists.
|
|
try:
|
|
import RAnDoM
|
|
except ImportError:
|
|
pass
|
|
else:
|
|
self.fail("import of RAnDoM should have failed (case mismatch)")
|
|
|
|
def test_double_const(self):
|
|
# Another brief digression to test the accuracy of manifest float
|
|
# constants.
|
|
from test import double_const # don't blink -- that *was* the test
|
|
|
|
def test_import(self):
|
|
def test_with_extension(ext):
|
|
# The extension is normally ".py", perhaps ".pyw".
|
|
source = TESTFN + ext
|
|
pyo = TESTFN + os.extsep + "pyo"
|
|
if is_jython:
|
|
pyc = TESTFN + "$py.class"
|
|
else:
|
|
pyc = TESTFN + os.extsep + "pyc"
|
|
|
|
with open(source, "w") as f:
|
|
print >> f, ("# This tests Python's ability to import a", ext,
|
|
"file.")
|
|
a = random.randrange(1000)
|
|
b = random.randrange(1000)
|
|
print >> f, "a =", a
|
|
print >> f, "b =", b
|
|
|
|
try:
|
|
mod = __import__(TESTFN)
|
|
except ImportError, err:
|
|
self.fail("import from %s failed: %s" % (ext, err))
|
|
else:
|
|
self.assertEqual(mod.a, a,
|
|
"module loaded (%s) but contents invalid" % mod)
|
|
self.assertEqual(mod.b, b,
|
|
"module loaded (%s) but contents invalid" % mod)
|
|
finally:
|
|
unlink(source)
|
|
|
|
try:
|
|
if not sys.dont_write_bytecode:
|
|
imp.reload(mod)
|
|
except ImportError, err:
|
|
self.fail("import from .pyc/.pyo failed: %s" % err)
|
|
finally:
|
|
unlink(pyc)
|
|
unlink(pyo)
|
|
unload(TESTFN)
|
|
|
|
sys.path.insert(0, os.curdir)
|
|
try:
|
|
test_with_extension(os.extsep + "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")
|
|
@unittest.skipIf(sys.dont_write_bytecode,
|
|
"test meaningful only when writing bytecode")
|
|
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(022)
|
|
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):
|
|
self.fail("__import__ did not result in creation of "
|
|
"either a .pyc or .pyo file")
|
|
s = os.stat(fn)
|
|
self.assertEqual(stat.S_IMODE(s.st_mode),
|
|
stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH)
|
|
finally:
|
|
os.umask(oldmask)
|
|
remove_files(TESTFN)
|
|
unload(TESTFN)
|
|
del sys.path[0]
|
|
|
|
@unittest.skipIf(sys.dont_write_bytecode,
|
|
"test meaningful only when writing bytecode")
|
|
def test_rewrite_pyc_with_read_only_source(self):
|
|
# Issue 6074: a long time ago on posix, and more recently on Windows,
|
|
# a read only source file resulted in a read only pyc file, which
|
|
# led to problems with updating it later
|
|
sys.path.insert(0, os.curdir)
|
|
fname = TESTFN + os.extsep + "py"
|
|
try:
|
|
# Write a Python file, make it read-only and import it
|
|
with open(fname, 'w') as f:
|
|
f.write("x = 'original'\n")
|
|
# Tweak the mtime of the source to ensure pyc gets updated later
|
|
s = os.stat(fname)
|
|
os.utime(fname, (s.st_atime, s.st_mtime-100000000))
|
|
os.chmod(fname, 0400)
|
|
m1 = __import__(TESTFN)
|
|
self.assertEqual(m1.x, 'original')
|
|
# Change the file and then reimport it
|
|
os.chmod(fname, 0600)
|
|
with open(fname, 'w') as f:
|
|
f.write("x = 'rewritten'\n")
|
|
unload(TESTFN)
|
|
m2 = __import__(TESTFN)
|
|
self.assertEqual(m2.x, 'rewritten')
|
|
# Now delete the source file and check the pyc was rewritten
|
|
unlink(fname)
|
|
unload(TESTFN)
|
|
m3 = __import__(TESTFN)
|
|
self.assertEqual(m3.x, 'rewritten')
|
|
finally:
|
|
chmod_files(TESTFN)
|
|
remove_files(TESTFN)
|
|
unload(TESTFN)
|
|
del sys.path[0]
|
|
|
|
def test_imp_module(self):
|
|
# Verify that the imp module can correctly load and find .py files
|
|
|
|
# XXX (ncoghlan): It would be nice to use test_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'):
|
|
# Regression test for http://bugs.python.org/issue561858.
|
|
filename = module + os.extsep + 'py'
|
|
|
|
# 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(']')
|
|
|
|
# Compile & remove .py file, we only need .pyc (or .pyo).
|
|
with open(filename, 'r') as f:
|
|
py_compile.compile(filename)
|
|
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]
|
|
unlink(filename + 'c')
|
|
unlink(filename + 'o')
|
|
|
|
def test_failing_import_sticks(self):
|
|
source = TESTFN + os.extsep + "py"
|
|
with open(source, "w") as f:
|
|
print >> f, "a = 1 // 0"
|
|
|
|
# New in 2.4, we shouldn't be able to import that no matter how often
|
|
# we try.
|
|
sys.path.insert(0, os.curdir)
|
|
try:
|
|
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:
|
|
del sys.path[0]
|
|
remove_files(TESTFN)
|
|
|
|
def test_failing_reload(self):
|
|
# A failing reload should leave the module object in sys.modules.
|
|
source = TESTFN + os.extsep + "py"
|
|
with open(source, "w") as f:
|
|
print >> f, "a = 1"
|
|
print >> f, "b = 2"
|
|
|
|
sys.path.insert(0, os.curdir)
|
|
try:
|
|
mod = __import__(TESTFN)
|
|
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
|
|
# 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:
|
|
print >> f, "a = 10"
|
|
print >> f, "b = 20//0"
|
|
|
|
self.assertRaises(ZeroDivisionError, imp.reload, mod)
|
|
|
|
# But we still expect the module to be in sys.modules.
|
|
mod = sys.modules.get(TESTFN)
|
|
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.assertEqual(mod.a, 10, "module has wrong attribute values")
|
|
self.assertEqual(mod.b, 2, "module has wrong attribute values")
|
|
|
|
finally:
|
|
del sys.path[0]
|
|
remove_files(TESTFN)
|
|
unload(TESTFN)
|
|
|
|
def test_infinite_reload(self):
|
|
# http://bugs.python.org/issue742342 reports that Python segfaults
|
|
# (infinite recursion in C) when faced with self-recursive reload()ing.
|
|
|
|
sys.path.insert(0, os.path.dirname(__file__))
|
|
try:
|
|
import infinite_reload
|
|
finally:
|
|
del sys.path[0]
|
|
|
|
def test_import_name_binding(self):
|
|
# import x.y.z binds x in the current namespace.
|
|
import test as x
|
|
import test.test_support
|
|
self.assertIs(x, test, x.__name__)
|
|
self.assertTrue(hasattr(test.test_support, "__file__"))
|
|
|
|
# import x.y.z as w binds z as w.
|
|
import test.test_support as y
|
|
self.assertIs(y, test.test_support, y.__name__)
|
|
|
|
def test_import_initless_directory_warning(self):
|
|
with check_warnings(('', ImportWarning)):
|
|
# Just a random non-package directory we always expect to be
|
|
# somewhere in sys.path...
|
|
self.assertRaises(ImportError, __import__, "site-packages")
|
|
|
|
def test_import_by_filename(self):
|
|
path = os.path.abspath(TESTFN)
|
|
with self.assertRaises(ImportError) as c:
|
|
__import__(path)
|
|
self.assertEqual("Import by filename is not supported.",
|
|
c.exception.args[0])
|
|
|
|
def test_import_in_del_does_not_crash(self):
|
|
# Issue 4236
|
|
testfn = script_helper.make_script('', TESTFN, textwrap.dedent("""\
|
|
import sys
|
|
class C:
|
|
def __del__(self):
|
|
import imp
|
|
sys.argv.insert(0, C())
|
|
"""))
|
|
try:
|
|
script_helper.assert_python_ok(testfn)
|
|
finally:
|
|
unlink(testfn)
|
|
|
|
def test_bug7732(self):
|
|
source = TESTFN + '.py'
|
|
os.mkdir(source)
|
|
try:
|
|
self.assertRaises((ImportError, IOError),
|
|
imp.find_module, TESTFN, ["."])
|
|
finally:
|
|
os.rmdir(source)
|
|
|
|
def test_timestamp_overflow(self):
|
|
# A modification timestamp larger than 2**32 should not be a problem
|
|
# when importing a module (issue #11235).
|
|
sys.path.insert(0, os.curdir)
|
|
try:
|
|
source = TESTFN + ".py"
|
|
compiled = source + ('c' if __debug__ else 'o')
|
|
with open(source, 'w') as f:
|
|
pass
|
|
try:
|
|
os.utime(source, (2 ** 33 - 5, 2 ** 33 - 5))
|
|
except OverflowError:
|
|
self.skipTest("cannot set modification time to large integer")
|
|
except OSError as e:
|
|
if e.errno != getattr(errno, 'EOVERFLOW', None):
|
|
raise
|
|
self.skipTest("cannot set modification time to large integer ({})".format(e))
|
|
__import__(TESTFN)
|
|
# The pyc file was created.
|
|
os.stat(compiled)
|
|
finally:
|
|
del sys.path[0]
|
|
remove_files(TESTFN)
|
|
|
|
def test_pyc_mtime(self):
|
|
# Test for issue #13863: .pyc timestamp sometimes incorrect on Windows.
|
|
sys.path.insert(0, os.curdir)
|
|
try:
|
|
# Jan 1, 2012; Jul 1, 2012.
|
|
mtimes = 1325376000, 1341100800
|
|
|
|
# Different names to avoid running into import caching.
|
|
tails = "spam", "eggs"
|
|
for mtime, tail in zip(mtimes, tails):
|
|
module = TESTFN + tail
|
|
source = module + ".py"
|
|
compiled = source + ('c' if __debug__ else 'o')
|
|
|
|
# Create a new Python file with the given mtime.
|
|
with open(source, 'w') as f:
|
|
f.write("# Just testing\nx=1, 2, 3\n")
|
|
os.utime(source, (mtime, mtime))
|
|
|
|
# Generate the .pyc/o file; if it couldn't be created
|
|
# for some reason, skip the test.
|
|
m = __import__(module)
|
|
if not os.path.exists(compiled):
|
|
unlink(source)
|
|
self.skipTest("Couldn't create .pyc/.pyo file.")
|
|
|
|
# Actual modification time of .py file.
|
|
mtime1 = int(os.stat(source).st_mtime) & 0xffffffff
|
|
|
|
# mtime that was encoded in the .pyc file.
|
|
with open(compiled, 'rb') as f:
|
|
mtime2 = struct.unpack('<L', f.read(8)[4:])[0]
|
|
|
|
unlink(compiled)
|
|
unlink(source)
|
|
|
|
self.assertEqual(mtime1, mtime2)
|
|
finally:
|
|
sys.path.pop(0)
|
|
|
|
def test_replace_parent_in_sys_modules(self):
|
|
dir_name = os.path.abspath(TESTFN)
|
|
os.mkdir(dir_name)
|
|
self.addCleanup(rmtree, dir_name)
|
|
pkg_dir = os.path.join(dir_name, 'sa')
|
|
os.mkdir(pkg_dir)
|
|
with open(os.path.join(pkg_dir, '__init__.py'), 'w') as init_file:
|
|
init_file.write("import v1")
|
|
with open(os.path.join(pkg_dir, 'v1.py'), 'w') as v1_file:
|
|
v1_file.write("import sys;"
|
|
"sys.modules['sa'] = sys.modules[__name__];"
|
|
"import sa")
|
|
sys.path.insert(0, dir_name)
|
|
self.addCleanup(sys.path.pop, 0)
|
|
# a segfault means the test failed!
|
|
import sa
|
|
|
|
def test_fromlist_type(self):
|
|
with self.assertRaises(TypeError) as cm:
|
|
__import__('encodings', fromlist=[u'aliases'])
|
|
self.assertIn('must be str, not unicode', str(cm.exception))
|
|
with self.assertRaises(TypeError) as cm:
|
|
__import__('encodings', fromlist=[1])
|
|
self.assertIn('must be str, not int', str(cm.exception))
|
|
|
|
|
|
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).
|
|
|
|
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.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:
|
|
unload(self.module_name)
|
|
unlink(self.file_name)
|
|
unlink(self.compiled_name)
|
|
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()
|
|
if not sys.dont_write_bytecode:
|
|
self.assertEqual(mod.module_filename, self.compiled_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.compiled_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.func_code
|
|
pos = constants.index(1)
|
|
constants[pos] = foreign_code
|
|
code = type(code)(code.co_argcount, 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):
|
|
path = TESTFN
|
|
|
|
def setUp(self):
|
|
os.mkdir(self.path)
|
|
self.syspath = sys.path[:]
|
|
|
|
def tearDown(self):
|
|
rmtree(self.path)
|
|
sys.path[:] = self.syspath
|
|
|
|
# Regression test for http://bugs.python.org/issue1293.
|
|
def test_trailing_slash(self):
|
|
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")
|
|
|
|
# Regression test for http://bugs.python.org/issue3677.
|
|
def _test_UNC_path(self):
|
|
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$\foo\bar.
|
|
path = os.path.abspath(self.path)
|
|
import socket
|
|
hn = socket.gethostname()
|
|
drive = path[0]
|
|
unc = "\\\\%s\\%s$"%(hn, drive)
|
|
unc += path[2:]
|
|
try:
|
|
os.listdir(unc)
|
|
except OSError as e:
|
|
if e.errno in (errno.EPERM, errno.EACCES, errno.ENOENT):
|
|
# See issue #15338
|
|
self.skipTest("cannot access administrative share %r" % (unc,))
|
|
raise
|
|
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 RelativeImportTests(unittest.TestCase):
|
|
|
|
def tearDown(self):
|
|
unload("test.relimport")
|
|
setUp = tearDown
|
|
|
|
def test_relimport_star(self):
|
|
# This will import * from .test_import.
|
|
from . import relimport
|
|
self.assertTrue(hasattr(relimport, "RelativeImportTests"))
|
|
|
|
def test_issue3221(self):
|
|
# Regression test for http://bugs.python.org/issue3221.
|
|
def check_absolute():
|
|
exec "from os import path" in ns
|
|
def check_relative():
|
|
exec "from . import relimport" in ns
|
|
|
|
# Check both OK with __package__ and __name__ correct
|
|
ns = dict(__package__='test', __name__='test.notarealmodule')
|
|
check_absolute()
|
|
check_relative()
|
|
|
|
# Check both OK with only __name__ wrong
|
|
ns = dict(__package__='test', __name__='notarealpkg.notarealmodule')
|
|
check_absolute()
|
|
check_relative()
|
|
|
|
# Check relative fails with only __package__ wrong
|
|
ns = dict(__package__='foo', __name__='test.notarealmodule')
|
|
with check_warnings(('.+foo', RuntimeWarning)):
|
|
check_absolute()
|
|
self.assertRaises(SystemError, check_relative)
|
|
|
|
# Check relative fails with __package__ and __name__ wrong
|
|
ns = dict(__package__='foo', __name__='notarealpkg.notarealmodule')
|
|
with check_warnings(('.+foo', RuntimeWarning)):
|
|
check_absolute()
|
|
self.assertRaises(SystemError, check_relative)
|
|
|
|
# Check both fail with package set to a non-string
|
|
ns = dict(__package__=object())
|
|
self.assertRaises(ValueError, check_absolute)
|
|
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 TestSymbolicallyLinkedPackage(unittest.TestCase):
|
|
package_name = 'sample'
|
|
|
|
def setUp(self):
|
|
if os.path.exists(self.tagged):
|
|
shutil.rmtree(self.tagged)
|
|
if os.path.exists(self.package_name):
|
|
symlink_support.remove_symlink(self.package_name)
|
|
self.orig_sys_path = sys.path[:]
|
|
|
|
# create a sample package; imagine you have a package with a tag and
|
|
# you want to symbolically link it from its untagged name.
|
|
os.mkdir(self.tagged)
|
|
init_file = os.path.join(self.tagged, '__init__.py')
|
|
open(init_file, 'w').close()
|
|
assert os.path.exists(init_file)
|
|
|
|
# now create a symlink to the tagged package
|
|
# sample -> sample-tagged
|
|
symlink_support.symlink(self.tagged, self.package_name)
|
|
|
|
assert os.path.isdir(self.package_name)
|
|
assert os.path.isfile(os.path.join(self.package_name, '__init__.py'))
|
|
|
|
@property
|
|
def tagged(self):
|
|
return self.package_name + '-tagged'
|
|
|
|
# regression test for issue6727
|
|
@unittest.skipUnless(
|
|
not hasattr(sys, 'getwindowsversion')
|
|
or sys.getwindowsversion() >= (6, 0),
|
|
"Windows Vista or later required")
|
|
@symlink_support.skip_unless_symlink
|
|
def test_symlinked_dir_importable(self):
|
|
# make sure sample can only be imported from the current directory.
|
|
sys.path[:] = ['.']
|
|
|
|
# and try to import the package
|
|
__import__(self.package_name)
|
|
|
|
def tearDown(self):
|
|
# now cleanup
|
|
if os.path.exists(self.package_name):
|
|
symlink_support.remove_symlink(self.package_name)
|
|
if os.path.exists(self.tagged):
|
|
shutil.rmtree(self.tagged)
|
|
sys.path[:] = self.orig_sys_path
|
|
|
|
def test_main(verbose=None):
|
|
run_unittest(ImportTests, PycRewritingTests, PathsTests,
|
|
RelativeImportTests, TestSymbolicallyLinkedPackage)
|
|
|
|
if __name__ == '__main__':
|
|
# Test needs to be a package, so we can do relative imports.
|
|
from test.test_import import test_main
|
|
test_main()
|