| import os, sys, string, random, tempfile, unittest | |
| from test.test_support import run_unittest | |
| class TestImport(unittest.TestCase): | |
| def __init__(self, *args, **kw): | |
| self.package_name = 'PACKAGE_' | |
| while self.package_name in sys.modules: | |
| self.package_name += random.choose(string.letters) | |
| self.module_name = self.package_name + '.foo' | |
| unittest.TestCase.__init__(self, *args, **kw) | |
| def remove_modules(self): | |
| for module_name in (self.package_name, self.module_name): | |
| if module_name in sys.modules: | |
| del sys.modules[module_name] | |
| def setUp(self): | |
| self.test_dir = tempfile.mkdtemp() | |
| sys.path.append(self.test_dir) | |
| self.package_dir = os.path.join(self.test_dir, | |
| self.package_name) | |
| os.mkdir(self.package_dir) | |
| open(os.path.join( | |
| self.package_dir, '__init__'+os.extsep+'py'), 'w').close() | |
| self.module_path = os.path.join(self.package_dir, 'foo'+os.extsep+'py') | |
| def tearDown(self): | |
| for file in os.listdir(self.package_dir): | |
| os.remove(os.path.join(self.package_dir, file)) | |
| os.rmdir(self.package_dir) | |
| os.rmdir(self.test_dir) | |
| self.assertNotEqual(sys.path.count(self.test_dir), 0) | |
| sys.path.remove(self.test_dir) | |
| self.remove_modules() | |
| def rewrite_file(self, contents): | |
| for extension in "co": | |
| compiled_path = self.module_path + extension | |
| if os.path.exists(compiled_path): | |
| os.remove(compiled_path) | |
| f = open(self.module_path, 'w') | |
| f.write(contents) | |
| f.close() | |
| def test_package_import__semantics(self): | |
| # Generate a couple of broken modules to try importing. | |
| # ...try loading the module when there's a SyntaxError | |
| self.rewrite_file('for') | |
| try: __import__(self.module_name) | |
| except SyntaxError: pass | |
| else: raise RuntimeError, 'Failed to induce SyntaxError' | |
| self.assertNotIn(self.module_name, sys.modules) | |
| self.assertFalse(hasattr(sys.modules[self.package_name], 'foo')) | |
| # ...make up a variable name that isn't bound in __builtins__ | |
| var = 'a' | |
| while var in dir(__builtins__): | |
| var += random.choose(string.letters) | |
| # ...make a module that just contains that | |
| self.rewrite_file(var) | |
| try: __import__(self.module_name) | |
| except NameError: pass | |
| else: raise RuntimeError, 'Failed to induce NameError.' | |
| # ...now change the module so that the NameError doesn't | |
| # happen | |
| self.rewrite_file('%s = 1' % var) | |
| module = __import__(self.module_name).foo | |
| self.assertEqual(getattr(module, var), 1) | |
| def test_main(): | |
| run_unittest(TestImport) | |
| if __name__ == "__main__": | |
| test_main() |