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import test.test_support, unittest
import sys
import subprocess
class CmdLineTest(unittest.TestCase):
def start_python(self, cmd_line):
cmd = '"%s" %s' % (sys.executable, cmd_line)
p = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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()
return data
def exit_code(self, *args):
cmd_line = [sys.executable]
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 == '' or data.endswith('\n'))
self.assertTrue('Traceback' not in data)
def test_environment(self):
self.verify_valid_flag('-E')
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('usage' in self.start_python('-h'))
def test_version(self):
version = 'Python %d.%d' % sys.version_info[:2]
self.assertTrue(self.start_python('-V').startswith(version))
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_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.test_support.run_unittest(CmdLineTest)
test.test_support.reap_children()
if __name__ == "__main__":
test_main()
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