| 1 | n/a | from .. import util |
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| 2 | n/a | from . import util as import_util |
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| 3 | n/a | import sys |
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| 4 | n/a | import unittest |
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| 5 | n/a | import importlib |
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| 6 | n/a | from test import support |
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| 7 | n/a | |
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| 8 | n/a | |
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| 9 | n/a | class ParentModuleTests(unittest.TestCase): |
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| 10 | n/a | |
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| 11 | n/a | """Importing a submodule should import the parent modules.""" |
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| 12 | n/a | |
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| 13 | n/a | def test_import_parent(self): |
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| 14 | n/a | with util.mock_modules('pkg.__init__', 'pkg.module') as mock: |
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| 15 | n/a | with util.import_state(meta_path=[mock]): |
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| 16 | n/a | module = import_util.import_('pkg.module') |
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| 17 | n/a | self.assertIn('pkg', sys.modules) |
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| 18 | n/a | |
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| 19 | n/a | def test_bad_parent(self): |
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| 20 | n/a | with util.mock_modules('pkg.module') as mock: |
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| 21 | n/a | with util.import_state(meta_path=[mock]): |
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| 22 | n/a | with self.assertRaises(ImportError) as cm: |
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| 23 | n/a | import_util.import_('pkg.module') |
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| 24 | n/a | self.assertEqual(cm.exception.name, 'pkg') |
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| 25 | n/a | |
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| 26 | n/a | def test_raising_parent_after_importing_child(self): |
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| 27 | n/a | def __init__(): |
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| 28 | n/a | import pkg.module |
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| 29 | n/a | 1/0 |
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| 30 | n/a | mock = util.mock_modules('pkg.__init__', 'pkg.module', |
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| 31 | n/a | module_code={'pkg': __init__}) |
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| 32 | n/a | with mock: |
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| 33 | n/a | with util.import_state(meta_path=[mock]): |
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| 34 | n/a | with self.assertRaises(ZeroDivisionError): |
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| 35 | n/a | import_util.import_('pkg') |
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| 36 | n/a | self.assertNotIn('pkg', sys.modules) |
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| 37 | n/a | self.assertIn('pkg.module', sys.modules) |
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| 38 | n/a | with self.assertRaises(ZeroDivisionError): |
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| 39 | n/a | import_util.import_('pkg.module') |
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| 40 | n/a | self.assertNotIn('pkg', sys.modules) |
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| 41 | n/a | self.assertIn('pkg.module', sys.modules) |
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| 42 | n/a | |
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| 43 | n/a | def test_raising_parent_after_relative_importing_child(self): |
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| 44 | n/a | def __init__(): |
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| 45 | n/a | from . import module |
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| 46 | n/a | 1/0 |
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| 47 | n/a | mock = util.mock_modules('pkg.__init__', 'pkg.module', |
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| 48 | n/a | module_code={'pkg': __init__}) |
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| 49 | n/a | with mock: |
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| 50 | n/a | with util.import_state(meta_path=[mock]): |
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| 51 | n/a | with self.assertRaises((ZeroDivisionError, ImportError)): |
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| 52 | n/a | # This raises ImportError on the "from . import module" |
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| 53 | n/a | # line, not sure why. |
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| 54 | n/a | import_util.import_('pkg') |
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| 55 | n/a | self.assertNotIn('pkg', sys.modules) |
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| 56 | n/a | with self.assertRaises((ZeroDivisionError, ImportError)): |
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| 57 | n/a | import_util.import_('pkg.module') |
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| 58 | n/a | self.assertNotIn('pkg', sys.modules) |
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| 59 | n/a | # XXX False |
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| 60 | n/a | #self.assertIn('pkg.module', sys.modules) |
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| 61 | n/a | |
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| 62 | n/a | def test_raising_parent_after_double_relative_importing_child(self): |
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| 63 | n/a | def __init__(): |
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| 64 | n/a | from ..subpkg import module |
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| 65 | n/a | 1/0 |
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| 66 | n/a | mock = util.mock_modules('pkg.__init__', 'pkg.subpkg.__init__', |
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| 67 | n/a | 'pkg.subpkg.module', |
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| 68 | n/a | module_code={'pkg.subpkg': __init__}) |
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| 69 | n/a | with mock: |
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| 70 | n/a | with util.import_state(meta_path=[mock]): |
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| 71 | n/a | with self.assertRaises((ZeroDivisionError, ImportError)): |
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| 72 | n/a | # This raises ImportError on the "from ..subpkg import module" |
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| 73 | n/a | # line, not sure why. |
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| 74 | n/a | import_util.import_('pkg.subpkg') |
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| 75 | n/a | self.assertNotIn('pkg.subpkg', sys.modules) |
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| 76 | n/a | with self.assertRaises((ZeroDivisionError, ImportError)): |
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| 77 | n/a | import_util.import_('pkg.subpkg.module') |
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| 78 | n/a | self.assertNotIn('pkg.subpkg', sys.modules) |
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| 79 | n/a | # XXX False |
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| 80 | n/a | #self.assertIn('pkg.subpkg.module', sys.modules) |
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| 81 | n/a | |
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| 82 | n/a | def test_module_not_package(self): |
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| 83 | n/a | # Try to import a submodule from a non-package should raise ImportError. |
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| 84 | n/a | assert not hasattr(sys, '__path__') |
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| 85 | n/a | with self.assertRaises(ImportError) as cm: |
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| 86 | n/a | import_util.import_('sys.no_submodules_here') |
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| 87 | n/a | self.assertEqual(cm.exception.name, 'sys.no_submodules_here') |
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| 88 | n/a | |
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| 89 | n/a | def test_module_not_package_but_side_effects(self): |
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| 90 | n/a | # If a module injects something into sys.modules as a side-effect, then |
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| 91 | n/a | # pick up on that fact. |
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| 92 | n/a | name = 'mod' |
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| 93 | n/a | subname = name + '.b' |
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| 94 | n/a | def module_injection(): |
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| 95 | n/a | sys.modules[subname] = 'total bunk' |
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| 96 | n/a | mock_modules = util.mock_modules('mod', |
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| 97 | n/a | module_code={'mod': module_injection}) |
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| 98 | n/a | with mock_modules as mock: |
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| 99 | n/a | with util.import_state(meta_path=[mock]): |
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| 100 | n/a | try: |
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| 101 | n/a | submodule = import_util.import_(subname) |
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| 102 | n/a | finally: |
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| 103 | n/a | support.unload(subname) |
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| 104 | n/a | |
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| 105 | n/a | |
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| 106 | n/a | def test_main(): |
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| 107 | n/a | from test.support import run_unittest |
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| 108 | n/a | run_unittest(ParentModuleTests) |
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| 109 | n/a | |
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| 110 | n/a | |
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| 111 | n/a | if __name__ == '__main__': |
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| 112 | n/a | test_main() |
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