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121 lines
4.9 KiB
Python
121 lines
4.9 KiB
Python
from importlib import machinery
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import imp
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import unittest
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from .. import abc
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from .. import util
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from test.support import captured_stdout
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class LoaderTests(abc.LoaderTests):
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def test_module(self):
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with util.uncache('__hello__'), captured_stdout() as stdout:
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module = machinery.FrozenImporter.load_module('__hello__')
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check = {'__name__': '__hello__',
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'__package__': '',
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'__loader__': machinery.FrozenImporter,
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}
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for attr, value in check.items():
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self.assertEqual(getattr(module, attr), value)
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self.assertEqual(stdout.getvalue(), 'Hello world!\n')
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self.assertFalse(hasattr(module, '__file__'))
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def test_package(self):
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with util.uncache('__phello__'), captured_stdout() as stdout:
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module = machinery.FrozenImporter.load_module('__phello__')
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check = {'__name__': '__phello__',
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'__package__': '__phello__',
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'__path__': ['__phello__'],
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'__loader__': machinery.FrozenImporter,
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}
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for attr, value in check.items():
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attr_value = getattr(module, attr)
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self.assertEqual(attr_value, value,
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"for __phello__.%s, %r != %r" %
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(attr, attr_value, value))
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self.assertEqual(stdout.getvalue(), 'Hello world!\n')
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self.assertFalse(hasattr(module, '__file__'))
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def test_lacking_parent(self):
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with util.uncache('__phello__', '__phello__.spam'), \
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captured_stdout() as stdout:
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module = machinery.FrozenImporter.load_module('__phello__.spam')
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check = {'__name__': '__phello__.spam',
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'__package__': '__phello__',
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'__loader__': machinery.FrozenImporter,
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}
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for attr, value in check.items():
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attr_value = getattr(module, attr)
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self.assertEqual(attr_value, value,
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"for __phello__.spam.%s, %r != %r" %
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(attr, attr_value, value))
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self.assertEqual(stdout.getvalue(), 'Hello world!\n')
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self.assertFalse(hasattr(module, '__file__'))
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def test_module_reuse(self):
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with util.uncache('__hello__'), captured_stdout() as stdout:
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module1 = machinery.FrozenImporter.load_module('__hello__')
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module2 = machinery.FrozenImporter.load_module('__hello__')
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self.assertIs(module1, module2)
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self.assertEqual(stdout.getvalue(),
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'Hello world!\nHello world!\n')
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def test_module_repr(self):
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with util.uncache('__hello__'), captured_stdout():
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module = machinery.FrozenImporter.load_module('__hello__')
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self.assertEqual(repr(module),
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"<module '__hello__' (frozen)>")
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def test_state_after_failure(self):
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# No way to trigger an error in a frozen module.
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pass
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def test_unloadable(self):
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assert machinery.FrozenImporter.find_module('_not_real') is None
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with self.assertRaises(ImportError) as cm:
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machinery.FrozenImporter.load_module('_not_real')
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self.assertEqual(cm.exception.name, '_not_real')
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class InspectLoaderTests(unittest.TestCase):
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"""Tests for the InspectLoader methods for FrozenImporter."""
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def test_get_code(self):
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# Make sure that the code object is good.
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name = '__hello__'
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with captured_stdout() as stdout:
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code = machinery.FrozenImporter.get_code(name)
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mod = imp.new_module(name)
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exec(code, mod.__dict__)
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self.assertTrue(hasattr(mod, 'initialized'))
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self.assertEqual(stdout.getvalue(), 'Hello world!\n')
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def test_get_source(self):
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# Should always return None.
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result = machinery.FrozenImporter.get_source('__hello__')
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self.assertIs(result, None)
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def test_is_package(self):
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# Should be able to tell what is a package.
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test_for = (('__hello__', False), ('__phello__', True),
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('__phello__.spam', False))
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for name, is_package in test_for:
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result = machinery.FrozenImporter.is_package(name)
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self.assertEqual(bool(result), is_package)
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def test_failure(self):
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# Raise ImportError for modules that are not frozen.
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for meth_name in ('get_code', 'get_source', 'is_package'):
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method = getattr(machinery.FrozenImporter, meth_name)
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with self.assertRaises(ImportError) as cm:
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method('importlib')
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self.assertEqual(cm.exception.name, 'importlib')
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def test_main():
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from test.support import run_unittest
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run_unittest(LoaderTests, InspectLoaderTests)
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if __name__ == '__main__':
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test_main()
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