| import importlib |
| from importlib import machinery |
| from .. import abc |
| from .. import util |
| from . import util as builtin_util |
| |
| import sys |
| import types |
| import unittest |
| |
| |
| class LoaderTests(abc.LoaderTests): |
| |
| """Test load_module() for built-in modules.""" |
| |
| verification = {'__name__': 'errno', '__package__': '', |
| '__loader__': machinery.BuiltinImporter} |
| |
| def verify(self, module): |
| """Verify that the module matches against what it should have.""" |
| self.assertTrue(isinstance(module, types.ModuleType)) |
| for attr, value in self.verification.items(): |
| self.assertEqual(getattr(module, attr), value) |
| self.assertTrue(module.__name__ in sys.modules) |
| |
| load_module = staticmethod(lambda name: |
| machinery.BuiltinImporter.load_module(name)) |
| |
| def test_module(self): |
| # Common case. |
| with util.uncache(builtin_util.NAME): |
| module = self.load_module(builtin_util.NAME) |
| self.verify(module) |
| |
| def test_package(self): |
| # Built-in modules cannot be a package. |
| pass |
| |
| def test_lacking_parent(self): |
| # Built-in modules cannot be a package. |
| pass |
| |
| def test_state_after_failure(self): |
| # Not way to force an imoprt failure. |
| pass |
| |
| def test_module_reuse(self): |
| # Test that the same module is used in a reload. |
| with util.uncache(builtin_util.NAME): |
| module1 = self.load_module(builtin_util.NAME) |
| module2 = self.load_module(builtin_util.NAME) |
| self.assertTrue(module1 is module2) |
| |
| def test_unloadable(self): |
| name = 'dssdsdfff' |
| assert name not in sys.builtin_module_names |
| with self.assertRaises(ImportError): |
| self.load_module(name) |
| |
| def test_already_imported(self): |
| # Using the name of a module already imported but not a built-in should |
| # still fail. |
| assert hasattr(importlib, '__file__') # Not a built-in. |
| with self.assertRaises(ImportError): |
| self.load_module('importlib') |
| |
| |
| class InspectLoaderTests(unittest.TestCase): |
| |
| """Tests for InspectLoader methods for BuiltinImporter.""" |
| |
| def test_get_code(self): |
| # There is no code object. |
| result = machinery.BuiltinImporter.get_code(builtin_util.NAME) |
| self.assertTrue(result is None) |
| |
| def test_get_source(self): |
| # There is no source. |
| result = machinery.BuiltinImporter.get_source(builtin_util.NAME) |
| self.assertTrue(result is None) |
| |
| def test_is_package(self): |
| # Cannot be a package. |
| result = machinery.BuiltinImporter.is_package(builtin_util.NAME) |
| self.assertTrue(not result) |
| |
| def test_not_builtin(self): |
| # Modules not built-in should raise ImportError. |
| for meth_name in ('get_code', 'get_source', 'is_package'): |
| method = getattr(machinery.BuiltinImporter, meth_name) |
| with self.assertRaises(ImportError): |
| method(builtin_util.BAD_NAME) |
| |
| |
| |
| def test_main(): |
| from test.support import run_unittest |
| run_unittest(LoaderTests, InspectLoaderTests) |
| |
| |
| if __name__ == '__main__': |
| test_main() |