Python code coverage for Lib/test/test_importlib/import_/test_api.py

#	count	content
1	n/a	from .. import util
2	n/a
3	n/a	from importlib import machinery
4	n/a	import sys
5	n/a	import types
6	n/a	import unittest
7	n/a
8	n/a	PKG_NAME = 'fine'
9	n/a	SUBMOD_NAME = 'fine.bogus'
10	n/a
11	n/a
12	n/a	class BadSpecFinderLoader:
13	n/a	@classmethod
14	n/a	def find_spec(cls, fullname, path=None, target=None):
15	n/a	if fullname == SUBMOD_NAME:
16	n/a	spec = machinery.ModuleSpec(fullname, cls)
17	n/a	return spec
18	n/a
19	n/a	@staticmethod
20	n/a	def create_module(spec):
21	n/a	return None
22	n/a
23	n/a	@staticmethod
24	n/a	def exec_module(module):
25	n/a	if module.__name__ == SUBMOD_NAME:
26	n/a	raise ImportError('I cannot be loaded!')
27	n/a
28	n/a
29	n/a	class BadLoaderFinder:
30	n/a	@classmethod
31	n/a	def find_module(cls, fullname, path):
32	n/a	if fullname == SUBMOD_NAME:
33	n/a	return cls
34	n/a
35	n/a	@classmethod
36	n/a	def load_module(cls, fullname):
37	n/a	if fullname == SUBMOD_NAME:
38	n/a	raise ImportError('I cannot be loaded!')
39	n/a
40	n/a
41	n/a	class APITest:
42	n/a
43	n/a	"""Test API-specific details for __import__ (e.g. raising the right
44	n/a	exception when passing in an int for the module name)."""
45	n/a
46	n/a	def test_raises_ModuleNotFoundError(self):
47	n/a	with self.assertRaises(ModuleNotFoundError):
48	n/a	util.import_importlib('some module that does not exist')
49	n/a
50	n/a	def test_name_requires_rparition(self):
51	n/a	# Raise TypeError if a non-string is passed in for the module name.
52	n/a	with self.assertRaises(TypeError):
53	n/a	self.__import__(42)
54	n/a
55	n/a	def test_negative_level(self):
56	n/a	# Raise ValueError when a negative level is specified.
57	n/a	# PEP 328 did away with sys.module None entries and the ambiguity of
58	n/a	# absolute/relative imports.
59	n/a	with self.assertRaises(ValueError):
60	n/a	self.__import__('os', globals(), level=-1)
61	n/a
62	n/a	def test_nonexistent_fromlist_entry(self):
63	n/a	# If something in fromlist doesn't exist, that's okay.
64	n/a	# issue15715
65	n/a	mod = types.ModuleType(PKG_NAME)
66	n/a	mod.__path__ = ['XXX']
67	n/a	with util.import_state(meta_path=[self.bad_finder_loader]):
68	n/a	with util.uncache(PKG_NAME):
69	n/a	sys.modules[PKG_NAME] = mod
70	n/a	self.__import__(PKG_NAME, fromlist=['not here'])
71	n/a
72	n/a	def test_fromlist_load_error_propagates(self):
73	n/a	# If something in fromlist triggers an exception not related to not
74	n/a	# existing, let that exception propagate.
75	n/a	# issue15316
76	n/a	mod = types.ModuleType(PKG_NAME)
77	n/a	mod.__path__ = ['XXX']
78	n/a	with util.import_state(meta_path=[self.bad_finder_loader]):
79	n/a	with util.uncache(PKG_NAME):
80	n/a	sys.modules[PKG_NAME] = mod
81	n/a	with self.assertRaises(ImportError):
82	n/a	self.__import__(PKG_NAME,
83	n/a	fromlist=[SUBMOD_NAME.rpartition('.')[-1]])
84	n/a
85	n/a
86	n/a	class OldAPITests(APITest):
87	n/a	bad_finder_loader = BadLoaderFinder
88	n/a
89	n/a
90	n/a	(Frozen_OldAPITests,
91	n/a	Source_OldAPITests
92	n/a	) = util.test_both(OldAPITests, __import__=util.__import__)
93	n/a
94	n/a
95	n/a	class SpecAPITests(APITest):
96	n/a	bad_finder_loader = BadSpecFinderLoader
97	n/a
98	n/a
99	n/a	(Frozen_SpecAPITests,
100	n/a	Source_SpecAPITests
101	n/a	) = util.test_both(SpecAPITests, __import__=util.__import__)
102	n/a
103	n/a
104	n/a	if __name__ == '__main__':
105	n/a	unittest.main()