| # Tests invocation of the interpreter with various command line arguments |
| # All tests are executed with environment variables ignored |
| # See test_cmd_line_script.py for testing of script execution |
| |
| import test.support, unittest |
| import sys |
| import subprocess |
| |
| def _spawn_python(*args): |
| cmd_line = [sys.executable, '-E'] |
| cmd_line.extend(args) |
| return subprocess.Popen(cmd_line, stdin=subprocess.PIPE, |
| stdout=subprocess.PIPE, stderr=subprocess.STDOUT) |
| |
| def _kill_python(p): |
| return _kill_python_and_exit_code(p)[0] |
| |
| def _kill_python_and_exit_code(p): |
| p.stdin.close() |
| data = p.stdout.read() |
| p.stdout.close() |
| # try to cleanup the child so we don't appear to leak when running |
| # with regrtest -R. This should be a no-op on Windows. |
| subprocess._cleanup() |
| returncode = p.wait() |
| return data, returncode |
| |
| class CmdLineTest(unittest.TestCase): |
| def start_python(self, *args): |
| return self.start_python_and_exit_code(*args)[0] |
| |
| def start_python_and_exit_code(self, *args): |
| p = _spawn_python(*args) |
| return _kill_python_and_exit_code(p) |
| |
| def exit_code(self, *args): |
| cmd_line = [sys.executable, '-E'] |
| cmd_line.extend(args) |
| return subprocess.call(cmd_line, stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| |
| def test_directories(self): |
| self.assertNotEqual(self.exit_code('.'), 0) |
| self.assertNotEqual(self.exit_code('< .'), 0) |
| |
| def verify_valid_flag(self, cmd_line): |
| data = self.start_python(cmd_line) |
| self.assertTrue(data == b'' or data.endswith(b'\n')) |
| self.assertTrue(b'Traceback' not in data) |
| |
| def test_optimize(self): |
| self.verify_valid_flag('-O') |
| self.verify_valid_flag('-OO') |
| |
| def test_q(self): |
| self.verify_valid_flag('-Qold') |
| self.verify_valid_flag('-Qnew') |
| self.verify_valid_flag('-Qwarn') |
| self.verify_valid_flag('-Qwarnall') |
| |
| def test_site_flag(self): |
| self.verify_valid_flag('-S') |
| |
| def test_usage(self): |
| self.assertTrue(b'usage' in self.start_python('-h')) |
| |
| def test_version(self): |
| version = ('Python %d.%d' % sys.version_info[:2]).encode("ascii") |
| self.assertTrue(self.start_python('-V').startswith(version)) |
| |
| def test_verbose(self): |
| # -v causes imports to write to stderr. If the write to |
| # stderr itself causes an import to happen (for the output |
| # codec), a recursion loop can occur. |
| data, rc = self.start_python_and_exit_code('-v') |
| self.assertEqual(rc, 0) |
| self.assertTrue(b'stack overflow' not in data) |
| data, rc = self.start_python_and_exit_code('-vv') |
| self.assertEqual(rc, 0) |
| self.assertTrue(b'stack overflow' not in data) |
| |
| def test_run_module(self): |
| # Test expected operation of the '-m' switch |
| # Switch needs an argument |
| self.assertNotEqual(self.exit_code('-m'), 0) |
| # Check we get an error for a nonexistent module |
| self.assertNotEqual( |
| self.exit_code('-m', 'fnord43520xyz'), |
| 0) |
| # Check the runpy module also gives an error for |
| # a nonexistent module |
| self.assertNotEqual( |
| self.exit_code('-m', 'runpy', 'fnord43520xyz'), |
| 0) |
| # All good if module is located and run successfully |
| self.assertEqual( |
| self.exit_code('-m', 'timeit', '-n', '1'), |
| 0) |
| |
| def test_run_module_bug1764407(self): |
| # -m and -i need to play well together |
| # Runs the timeit module and checks the __main__ |
| # namespace has been populated appropriately |
| p = _spawn_python('-i', '-m', 'timeit', '-n', '1') |
| p.stdin.write(b'Timer\n') |
| p.stdin.write(b'exit()\n') |
| data = _kill_python(p) |
| self.assertTrue(data.find(b'1 loop') != -1) |
| self.assertTrue(data.find(b'__main__.Timer') != -1) |
| |
| def test_run_code(self): |
| # Test expected operation of the '-c' switch |
| # Switch needs an argument |
| self.assertNotEqual(self.exit_code('-c'), 0) |
| # Check we get an error for an uncaught exception |
| self.assertNotEqual( |
| self.exit_code('-c', 'raise Exception'), |
| 0) |
| # All good if execution is successful |
| self.assertEqual( |
| self.exit_code('-c', 'pass'), |
| 0) |
| |
| |
| def test_main(): |
| test.support.run_unittest(CmdLineTest) |
| test.support.reap_children() |
| |
| if __name__ == "__main__": |
| test_main() |