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import test.test_support, unittest
import sys
import popen2
import subprocess
class CmdLineTest(unittest.TestCase):
def start_python(self, cmd_line):
outfp, infp = popen2.popen4('%s %s' % (sys.executable, cmd_line))
infp.close()
data = outfp.read()
outfp.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.
popen2._cleanup()
return data
def exit_code(self, cmd_line):
return subprocess.call([sys.executable, cmd_line], stderr=subprocess.PIPE)
def popen_python(self, *args):
cmd_line = [sys.executable]
cmd_line.extend(args)
return subprocess.Popen(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
result = self.popen_python('-m')
exit_code = result.wait()
self.assertNotEqual(exit_code, 0)
err_details = result.stderr.read()
self.assertTrue(err_details.startswith('Argument expected'))
# Check we get an import error for a nonexistent module
result = self.popen_python('-m', 'fnord43520xyz')
exit_code = result.wait()
self.assertNotEqual(exit_code, 0)
err_details = result.stderr.read()
self.assertTrue('ImportError' in err_details)
# Traceback shown if the requested module is located for execution
# and subsequently fails (even if that module is runpy)
result = self.popen_python('-m', 'runpy', 'fnord')
exit_code = result.wait()
self.assertNotEqual(exit_code, 0)
err_details = result.stderr.read()
self.assertTrue(err_details.startswith('Traceback'))
# Silence if module is located and run successfully
result = self.popen_python('-m', 'timeit', '-n', '1')
exit_code = result.wait()
self.assertEqual(exit_code, 0)
err_details = result.stderr.read()
self.assertTrue(err_details in ('', '\n'))
def test_run_code(self):
# Test expected operation of the '-c' switch
# Switch needs an argument
result = self.popen_python('-c')
exit_code = result.wait()
self.assertNotEqual(exit_code, 0)
err_details = result.stderr.read()
self.assertTrue(err_details.startswith('Argument expected'))
# Traceback shown for uncaught exceptions
result = self.popen_python('-c', 'raise Exception')
exit_code = result.wait()
self.assertNotEqual(exit_code, 0)
err_details = result.stderr.read()
self.assertTrue(err_details.startswith('Traceback'))
# Silence if execution is successful
result = self.popen_python('-c', '""')
exit_code = result.wait()
self.assertEqual(exit_code, 0)
err_details = result.stderr.read()
self.assertTrue(err_details in ('', '\n'))
def test_main():
test.test_support.run_unittest(CmdLineTest)
if __name__ == "__main__":
test_main()
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