| # 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 os |
| import sys |
| import subprocess |
| |
| def _spawn_python(*args): |
| cmd_line = [sys.executable] |
| # When testing -S, we need PYTHONPATH to work (see test_site_flag()) |
| if '-S' not in args: |
| cmd_line.append('-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): |
| if os.name == 'posix': |
| # Workaround bug #586680 by adding the extension dir to PYTHONPATH |
| from distutils.util import get_platform |
| s = "./build/lib.%s-%.3s" % (get_platform(), sys.version) |
| if hasattr(sys, 'gettotalrefcount'): |
| s += '-pydebug' |
| p = os.environ.get('PYTHONPATH', '') |
| if p: |
| p += ':' |
| os.environ['PYTHONPATH'] = p + s |
| 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) |
| |
| # Test handling of non-ascii data |
| if sys.getfilesystemencoding() != 'ascii': |
| command = "assert(ord('\xe9') == 0xe9)" |
| self.assertEqual( |
| self.exit_code('-c', command), |
| 0) |
| |
| def test_unbuffered_output(self): |
| # Test expected operation of the '-u' switch |
| for stream in ('stdout', 'stderr'): |
| # Binary is unbuffered |
| code = ("import os, sys; sys.%s.buffer.write(b'x'); os._exit(0)" |
| % stream) |
| data, rc = self.start_python_and_exit_code('-u', '-c', code) |
| self.assertEqual(rc, 0) |
| self.assertEqual(data, b'x', "binary %s not unbuffered" % stream) |
| # Text is line-buffered |
| code = ("import os, sys; sys.%s.write('x\\n'); os._exit(0)" |
| % stream) |
| data, rc = self.start_python_and_exit_code('-u', '-c', code) |
| self.assertEqual(rc, 0) |
| self.assertEqual(data.strip(), b'x', |
| "text %s not line-buffered" % stream) |
| |
| def test_unbuffered_input(self): |
| # sys.stdin still works with '-u' |
| code = ("import sys; sys.stdout.write(sys.stdin.read(1))") |
| p = _spawn_python('-u', '-c', code) |
| p.stdin.write(b'x') |
| p.stdin.flush() |
| data, rc = _kill_python_and_exit_code(p) |
| self.assertEqual(rc, 0) |
| self.assert_(data.startswith(b'x'), data) |
| |
| |
| def test_main(): |
| test.support.run_unittest(CmdLineTest) |
| test.support.reap_children() |
| |
| if __name__ == "__main__": |
| test_main() |