# Test packages (dotted-name import)
import sys
import os
import tempfile
import textwrap
import unittest
# Helpers to create and destroy hierarchies.
def cleanout(root):
names = os.listdir(root)
for name in names:
fullname = os.path.join(root, name)
if os.path.isdir(fullname) and not os.path.islink(fullname):
cleanout(fullname)
else:
os.remove(fullname)
os.rmdir(root)
def fixdir(lst):
if "__builtins__" in lst:
lst.remove("__builtins__")
if "__initializing__" in lst:
lst.remove("__initializing__")
return lst
# XXX Things to test
#
# import package without __init__
# import package with __init__
# __init__ importing submodule
# __init__ importing global module
# __init__ defining variables
# submodule importing other submodule
# submodule importing global module
# submodule import submodule via global name
# from package import submodule
# from package import subpackage
# from package import variable (defined in __init__)
# from package import * (defined in __init__)
class TestPkg(unittest.TestCase):
def setUp(self):
self.root = None
self.pkgname = None
self.syspath = list(sys.path)
self.modules_to_cleanup = set() # Populated by mkhier().
def tearDown(self):
sys.path[:] = self.syspath
for modulename in self.modules_to_cleanup:
if modulename in sys.modules:
del sys.modules[modulename]
if self.root: # Only clean if the test was actually run
cleanout(self.root)
# delete all modules concerning the tested hierarchy
if self.pkgname:
modules = [name for name in sys.modules
if self.pkgname in name.split('.')]
for name in modules:
del sys.modules[name]
def run_code(self, code):
exec(textwrap.dedent(code), globals(), {"self": self})
def mkhier(self, descr):
root = tempfile.mkdtemp()
sys.path.insert(0, root)
if not os.path.isdir(root):
os.mkdir(root)
for name, contents in descr:
comps = name.split()
self.modules_to_cleanup.add('.'.join(comps))
fullname = root
for c in comps:
fullname = os.path.join(fullname, c)
if contents is None:
os.mkdir(fullname)
else:
with open(fullname, "w") as f:
f.write(contents)
if not contents.endswith('\n'):
f.write('\n')
self.root = root
# package name is the name of the first item
self.pkgname = descr[0][0]
def test_1(self):
hier = [("t1", None), ("t1 __init__.py", "")]
self.mkhier(hier)
import t1 # noqa: F401
def test_2(self):
hier = [
("t2", None),
("t2 __init__.py", "'doc for t2'"),
("t2 sub", None),
("t2 sub __init__.py", ""),
("t2 sub subsub", None),
("t2 sub subsub __init__.py", "spam = 1"),
]
self.mkhier(hier)
import t2.sub
import t2.sub.subsub
self.assertEqual(t2.__name__, "t2")
self.assertEqual(t2.sub.__name__, "t2.sub")
self.assertEqual(t2.sub.subsub.__name__, "t2.sub.subsub")
# This exec crap is needed because Py3k forbids 'import *' outside
# of module-scope and __import__() is insufficient for what we need.
s = """
import t2
from t2 import *
self.assertEqual(dir(), ['self', 'sub', 't2'])
"""
self.run_code(s)
from t2 import sub
from t2.sub import subsub
from t2.sub.subsub import spam # noqa: F401
self.assertEqual(sub.__name__, "t2.sub")
self.assertEqual(subsub.__name__, "t2.sub.subsub")
self.assertEqual(sub.subsub.__name__, "t2.sub.subsub")
for name in ['spam', 'sub', 'subsub', 't2']:
self.assertTrue(locals()["name"], "Failed to import %s" % name)
import t2.sub
import t2.sub.subsub
self.assertEqual(t2.__name__, "t2")
self.assertEqual(t2.sub.__name__, "t2.sub")
self.assertEqual(t2.sub.subsub.__name__, "t2.sub.subsub")
s = """
from t2 import *
self.assertEqual(dir(), ['self', 'sub'])
"""
self.run_code(s)
def test_3(self):
hier = [
("t3", None),
("t3 __init__.py", ""),
("t3 sub", None),
("t3 sub __init__.py", ""),
("t3 sub subsub", None),
("t3 sub subsub __init__.py", "spam = 1"),
]
self.mkhier(hier)
import t3.sub.subsub
self.assertEqual(t3.__name__, "t3")
self.assertEqual(t3.sub.__name__, "t3.sub")
self.assertEqual(t3.sub.subsub.__name__, "t3.sub.subsub")
def test_4(self):
hier = [
("t4.py", "raise RuntimeError('Shouldnt load t4.py')"),
("t4", None),
("t4 __init__.py", ""),
("t4 sub.py", "raise RuntimeError('Shouldnt load sub.py')"),
("t4 sub", None),
("t4 sub __init__.py", ""),
("t4 sub subsub.py",
"raise RuntimeError('Shouldnt load subsub.py')"),
("t4 sub subsub", None),
("t4 sub subsub __init__.py", "spam = 1"),
]
self.mkhier(hier)
s = """
from t4.sub.subsub import *
self.assertEqual(spam, 1)
"""
self.run_code(s)
def test_5(self):
hier = [
("t5", None),
("t5 __init__.py", "import t5.foo"),
("t5 string.py", "spam = 1"),
("t5 foo.py",
"from . import string; assert string.spam == 1"),
]
self.mkhier(hier)
import t5
s = """
from t5 import *
self.assertEqual(dir(), ['foo', 'self', 'string', 't5'])
"""
self.run_code(s)
import t5
self.assertEqual(fixdir(dir(t5)),
['__cached__', '__doc__', '__file__', '__loader__',
'__name__', '__package__', '__path__', '__spec__',
'foo', 'string', 't5'])
self.assertEqual(fixdir(dir(t5.foo)),
['__cached__', '__doc__', '__file__', '__loader__',
'__name__', '__package__', '__spec__', 'string'])
self.assertEqual(fixdir(dir(t5.string)),
['__cached__', '__doc__', '__file__', '__loader__',
'__name__', '__package__', '__spec__', 'spam'])
def test_6(self):
hier = [
("t6", None),
("t6 __init__.py",
"__all__ = ['spam', 'ham', 'eggs']"),
("t6 spam.py", ""),
("t6 ham.py", ""),
("t6 eggs.py", ""),
]
self.mkhier(hier)
import t6
self.assertEqual(fixdir(dir(t6)),
['__all__', '__cached__', '__doc__', '__file__',
'__loader__', '__name__', '__package__', '__path__',
'__spec__'])
s = """
import t6
from t6 import *
self.assertEqual(fixdir(dir(t6)),
['__all__', '__cached__', '__doc__', '__file__',
'__loader__', '__name__', '__package__',
'__path__', '__spec__', 'eggs', 'ham', 'spam'])
self.assertEqual(dir(), ['eggs', 'ham', 'self', 'spam', 't6'])
"""
self.run_code(s)
def test_7(self):
hier = [
("t7.py", ""),
("t7", None),
("t7 __init__.py", ""),
("t7 sub.py",
"raise RuntimeError('Shouldnt load sub.py')"),
("t7 sub", None),
("t7 sub __init__.py", ""),
("t7 sub .py",
"raise RuntimeError('Shouldnt load subsub.py')"),
("t7 sub subsub", None),
("t7 sub subsub __init__.py",
"spam = 1"),
]
self.mkhier(hier)
t7, sub, subsub = None, None, None
import t7 as tas
self.assertEqual(fixdir(dir(tas)),
['__cached__', '__doc__', '__file__', '__loader__',
'__name__', '__package__', '__path__', '__spec__'])
self.assertFalse(t7)
from t7 import sub as subpar
self.assertEqual(fixdir(dir(subpar)),
['__cached__', '__doc__', '__file__', '__loader__',
'__name__', '__package__', '__path__', '__spec__'])
self.assertFalse(t7)
self.assertFalse(sub)
from t7.sub import subsub as subsubsub
self.assertEqual(fixdir(dir(subsubsub)),
['__cached__', '__doc__', '__file__', '__loader__',
'__name__', '__package__', '__path__', '__spec__',
'spam'])
self.assertFalse(t7)
self.assertFalse(sub)
self.assertFalse(subsub)
from t7.sub.subsub import spam as ham
self.assertEqual(ham, 1)
self.assertFalse(t7)
self.assertFalse(sub)
self.assertFalse(subsub)
@unittest.skipIf(sys.flags.optimize >= 2,
"Docstrings are omitted with -O2 and above")
def test_8(self):
hier = [
("t8", None),
("t8 __init__"+os.extsep+"py", "'doc for t8'"),
]
self.mkhier(hier)
import t8
self.assertEqual(t8.__doc__, "doc for t8")
if __name__ == "__main__":
unittest.main()
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