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1from .. import abc
2from .. import util
3
4machinery = util.import_importlib('importlib.machinery')
5
6import sys
7import unittest
8
9
10@unittest.skipIf(util.BUILTINS.good_name is None, 'no reasonable builtin module')
11class FindSpecTests(abc.FinderTests):
12
13    """Test find_spec() for built-in modules."""
14
15    def test_module(self):
16        # Common case.
17        with util.uncache(util.BUILTINS.good_name):
18            found = self.machinery.BuiltinImporter.find_spec(util.BUILTINS.good_name)
19            self.assertTrue(found)
20            self.assertEqual(found.origin, 'built-in')
21
22    # Built-in modules cannot be a package.
23    test_package = None
24
25    # Built-in modules cannot be in a package.
26    test_module_in_package = None
27
28    # Built-in modules cannot be a package.
29    test_package_in_package = None
30
31    # Built-in modules cannot be a package.
32    test_package_over_module = None
33
34    def test_failure(self):
35        name = 'importlib'
36        assert name not in sys.builtin_module_names
37        spec = self.machinery.BuiltinImporter.find_spec(name)
38        self.assertIsNone(spec)
39
40    def test_ignore_path(self):
41        # The value for 'path' should always trigger a failed import.
42        with util.uncache(util.BUILTINS.good_name):
43            spec = self.machinery.BuiltinImporter.find_spec(util.BUILTINS.good_name,
44                                                            ['pkg'])
45            self.assertIsNone(spec)
46
47
48(Frozen_FindSpecTests,
49 Source_FindSpecTests
50 ) = util.test_both(FindSpecTests, machinery=machinery)
51
52
53@unittest.skipIf(util.BUILTINS.good_name is None, 'no reasonable builtin module')
54class FinderTests(abc.FinderTests):
55
56    """Test find_module() for built-in modules."""
57
58    def test_module(self):
59        # Common case.
60        with util.uncache(util.BUILTINS.good_name):
61            found = self.machinery.BuiltinImporter.find_module(util.BUILTINS.good_name)
62            self.assertTrue(found)
63            self.assertTrue(hasattr(found, 'load_module'))
64
65    # Built-in modules cannot be a package.
66    test_package = test_package_in_package = test_package_over_module = None
67
68    # Built-in modules cannot be in a package.
69    test_module_in_package = None
70
71    def test_failure(self):
72        assert 'importlib' not in sys.builtin_module_names
73        loader = self.machinery.BuiltinImporter.find_module('importlib')
74        self.assertIsNone(loader)
75
76    def test_ignore_path(self):
77        # The value for 'path' should always trigger a failed import.
78        with util.uncache(util.BUILTINS.good_name):
79            loader = self.machinery.BuiltinImporter.find_module(util.BUILTINS.good_name,
80                                                            ['pkg'])
81            self.assertIsNone(loader)
82
83
84(Frozen_FinderTests,
85 Source_FinderTests
86 ) = util.test_both(FinderTests, machinery=machinery)
87
88
89if __name__ == '__main__':
90    unittest.main()
91