Python code coverage for Lib/importlib/test/builtin/test_loader.py

#	count	content
1	n/a	import importlib
2	n/a	from importlib import machinery
3	n/a	from .. import abc
4	n/a	from .. import util
5	n/a	from . import util as builtin_util
6	n/a
7	n/a	import sys
8	n/a	import types
9	n/a	import unittest
10	n/a
11	n/a
12	n/a	class LoaderTests(abc.LoaderTests):
13	n/a
14	n/a	"""Test load_module() for built-in modules."""
15	n/a
16	n/a	verification = {'__name__': 'errno', '__package__': '',
17	n/a	'__loader__': machinery.BuiltinImporter}
18	n/a
19	n/a	def verify(self, module):
20	n/a	"""Verify that the module matches against what it should have."""
21	n/a	self.assertIsInstance(module, types.ModuleType)
22	n/a	for attr, value in self.verification.items():
23	n/a	self.assertEqual(getattr(module, attr), value)
24	n/a	self.assertIn(module.__name__, sys.modules)
25	n/a
26	n/a	load_module = staticmethod(lambda name:
27	n/a	machinery.BuiltinImporter.load_module(name))
28	n/a
29	n/a	def test_module(self):
30	n/a	# Common case.
31	n/a	with util.uncache(builtin_util.NAME):
32	n/a	module = self.load_module(builtin_util.NAME)
33	n/a	self.verify(module)
34	n/a
35	n/a	def test_package(self):
36	n/a	# Built-in modules cannot be a package.
37	n/a	pass
38	n/a
39	n/a	def test_lacking_parent(self):
40	n/a	# Built-in modules cannot be a package.
41	n/a	pass
42	n/a
43	n/a	def test_state_after_failure(self):
44	n/a	# Not way to force an imoprt failure.
45	n/a	pass
46	n/a
47	n/a	def test_module_reuse(self):
48	n/a	# Test that the same module is used in a reload.
49	n/a	with util.uncache(builtin_util.NAME):
50	n/a	module1 = self.load_module(builtin_util.NAME)
51	n/a	module2 = self.load_module(builtin_util.NAME)
52	n/a	self.assertIs(module1, module2)
53	n/a
54	n/a	def test_unloadable(self):
55	n/a	name = 'dssdsdfff'
56	n/a	assert name not in sys.builtin_module_names
57	n/a	with self.assertRaises(ImportError) as cm:
58	n/a	self.load_module(name)
59	n/a	self.assertEqual(cm.exception.name, name)
60	n/a
61	n/a	def test_already_imported(self):
62	n/a	# Using the name of a module already imported but not a built-in should
63	n/a	# still fail.
64	n/a	assert hasattr(importlib, '__file__') # Not a built-in.
65	n/a	with self.assertRaises(ImportError) as cm:
66	n/a	self.load_module('importlib')
67	n/a	self.assertEqual(cm.exception.name, 'importlib')
68	n/a
69	n/a
70	n/a	class InspectLoaderTests(unittest.TestCase):
71	n/a
72	n/a	"""Tests for InspectLoader methods for BuiltinImporter."""
73	n/a
74	n/a	def test_get_code(self):
75	n/a	# There is no code object.
76	n/a	result = machinery.BuiltinImporter.get_code(builtin_util.NAME)
77	n/a	self.assertIsNone(result)
78	n/a
79	n/a	def test_get_source(self):
80	n/a	# There is no source.
81	n/a	result = machinery.BuiltinImporter.get_source(builtin_util.NAME)
82	n/a	self.assertIsNone(result)
83	n/a
84	n/a	def test_is_package(self):
85	n/a	# Cannot be a package.
86	n/a	result = machinery.BuiltinImporter.is_package(builtin_util.NAME)
87	n/a	self.assertTrue(not result)
88	n/a
89	n/a	def test_not_builtin(self):
90	n/a	# Modules not built-in should raise ImportError.
91	n/a	for meth_name in ('get_code', 'get_source', 'is_package'):
92	n/a	method = getattr(machinery.BuiltinImporter, meth_name)
93	n/a	with self.assertRaises(ImportError) as cm:
94	n/a	method(builtin_util.BAD_NAME)
95	n/a	self.assertRaises(builtin_util.BAD_NAME)
96	n/a
97	n/a
98	n/a
99	n/a	def test_main():
100	n/a	from test.support import run_unittest
101	n/a	run_unittest(LoaderTests, InspectLoaderTests)
102	n/a
103	n/a
104	n/a	if __name__ == '__main__':
105	n/a	test_main()