python (3.12.0)
1 from test.test_importlib import abc, util
2
3 machinery = util.import_importlib('importlib.machinery')
4
5 import _imp
6 import marshal
7 import os.path
8 import unittest
9 import warnings
10
11 from test.support import import_helper, REPO_ROOT, STDLIB_DIR
12
13
14 def resolve_stdlib_file(name, ispkg=False):
15 assert name
16 if ispkg:
17 return os.path.join(STDLIB_DIR, *name.split('.'), '__init__.py')
18 else:
19 return os.path.join(STDLIB_DIR, *name.split('.')) + '.py'
20
21
22 class ESC[4;38;5;81mFindSpecTests(ESC[4;38;5;149mabcESC[4;38;5;149m.ESC[4;38;5;149mFinderTests):
23
24 """Test finding frozen modules."""
25
26 def find(self, name, **kwargs):
27 finder = self.machinery.FrozenImporter
28 with import_helper.frozen_modules():
29 return finder.find_spec(name, **kwargs)
30
31 def check_basic(self, spec, name, ispkg=False):
32 self.assertEqual(spec.name, name)
33 self.assertIs(spec.loader, self.machinery.FrozenImporter)
34 self.assertEqual(spec.origin, 'frozen')
35 self.assertFalse(spec.has_location)
36 if ispkg:
37 self.assertIsNotNone(spec.submodule_search_locations)
38 else:
39 self.assertIsNone(spec.submodule_search_locations)
40 self.assertIsNotNone(spec.loader_state)
41
42 def check_loader_state(self, spec, origname=None, filename=None):
43 if not filename:
44 if not origname:
45 origname = spec.name
46 filename = resolve_stdlib_file(origname)
47
48 actual = dict(vars(spec.loader_state))
49
50 # Check the rest of spec.loader_state.
51 expected = dict(
52 origname=origname,
53 filename=filename if origname else None,
54 )
55 self.assertDictEqual(actual, expected)
56
57 def check_search_locations(self, spec):
58 """This is only called when testing packages."""
59 missing = object()
60 filename = getattr(spec.loader_state, 'filename', missing)
61 origname = getattr(spec.loader_state, 'origname', None)
62 if not origname or filename is missing:
63 # We deal with this in check_loader_state().
64 return
65 if not filename:
66 expected = []
67 elif origname != spec.name and not origname.startswith('<'):
68 expected = []
69 else:
70 expected = [os.path.dirname(filename)]
71 self.assertListEqual(spec.submodule_search_locations, expected)
72
73 def test_module(self):
74 modules = [
75 '__hello__',
76 '__phello__.spam',
77 '__phello__.ham.eggs',
78 ]
79 for name in modules:
80 with self.subTest(f'{name} -> {name}'):
81 spec = self.find(name)
82 self.check_basic(spec, name)
83 self.check_loader_state(spec)
84 modules = {
85 '__hello_alias__': '__hello__',
86 '_frozen_importlib': 'importlib._bootstrap',
87 }
88 for name, origname in modules.items():
89 with self.subTest(f'{name} -> {origname}'):
90 spec = self.find(name)
91 self.check_basic(spec, name)
92 self.check_loader_state(spec, origname)
93 modules = [
94 '__phello__.__init__',
95 '__phello__.ham.__init__',
96 ]
97 for name in modules:
98 origname = '<' + name.rpartition('.')[0]
99 filename = resolve_stdlib_file(name)
100 with self.subTest(f'{name} -> {origname}'):
101 spec = self.find(name)
102 self.check_basic(spec, name)
103 self.check_loader_state(spec, origname, filename)
104 modules = {
105 '__hello_only__': ('Tools', 'freeze', 'flag.py'),
106 }
107 for name, path in modules.items():
108 origname = None
109 filename = os.path.join(REPO_ROOT, *path)
110 with self.subTest(f'{name} -> {filename}'):
111 spec = self.find(name)
112 self.check_basic(spec, name)
113 self.check_loader_state(spec, origname, filename)
114
115 def test_package(self):
116 packages = [
117 '__phello__',
118 '__phello__.ham',
119 ]
120 for name in packages:
121 filename = resolve_stdlib_file(name, ispkg=True)
122 with self.subTest(f'{name} -> {name}'):
123 spec = self.find(name)
124 self.check_basic(spec, name, ispkg=True)
125 self.check_loader_state(spec, name, filename)
126 self.check_search_locations(spec)
127 packages = {
128 '__phello_alias__': '__hello__',
129 }
130 for name, origname in packages.items():
131 filename = resolve_stdlib_file(origname, ispkg=False)
132 with self.subTest(f'{name} -> {origname}'):
133 spec = self.find(name)
134 self.check_basic(spec, name, ispkg=True)
135 self.check_loader_state(spec, origname, filename)
136 self.check_search_locations(spec)
137
138 # These are covered by test_module() and test_package().
139 test_module_in_package = None
140 test_package_in_package = None
141
142 # No easy way to test.
143 test_package_over_module = None
144
145 def test_path_ignored(self):
146 for name in ('__hello__', '__phello__', '__phello__.spam'):
147 actual = self.find(name)
148 for path in (None, object(), '', 'eggs', [], [''], ['eggs']):
149 with self.subTest((name, path)):
150 spec = self.find(name, path=path)
151 self.assertEqual(spec, actual)
152
153 def test_target_ignored(self):
154 imported = ('__hello__', '__phello__')
155 with import_helper.CleanImport(*imported, usefrozen=True):
156 import __hello__ as match
157 import __phello__ as nonmatch
158 name = '__hello__'
159 actual = self.find(name)
160 for target in (None, match, nonmatch, object(), 'not-a-module-object'):
161 with self.subTest(target):
162 spec = self.find(name, target=target)
163 self.assertEqual(spec, actual)
164
165 def test_failure(self):
166 spec = self.find('<not real>')
167 self.assertIsNone(spec)
168
169 def test_not_using_frozen(self):
170 finder = self.machinery.FrozenImporter
171 with import_helper.frozen_modules(enabled=False):
172 # both frozen and not frozen
173 spec1 = finder.find_spec('__hello__')
174 # only frozen
175 spec2 = finder.find_spec('__hello_only__')
176 self.assertIsNone(spec1)
177 self.assertIsNone(spec2)
178
179
180 (Frozen_FindSpecTests,
181 Source_FindSpecTests
182 ) = util.test_both(FindSpecTests, machinery=machinery)
183
184
185 if __name__ == '__main__':
186 unittest.main()
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