def test_help(self):
options = OptionParser()
try:
orig_stderr = sys.stderr
sys.stderr = StringIO()
with self.assertRaises(SystemExit):
options.parse_command_line(["main.py", "--help"])
usage = sys.stderr.getvalue()
finally:
sys.stderr = orig_stderr
self.assertIn("Usage:", usage)
def test_dash_underscore_cli(self):
# Dashes and underscores should be interchangeable.
for defined_name in ['foo-bar', 'foo_bar']:
for flag in ['--foo-bar=a', '--foo_bar=a']:
options = OptionParser()
options.define(defined_name)
options.parse_command_line(['main.py', flag])
# Attr-style access always uses underscores.
self.assertEqual(options.foo_bar, 'a')
# Dict-style access allows both.
self.assertEqual(options['foo-bar'], 'a')
self.assertEqual(options['foo_bar'], 'a')
def test_types(self):
options = OptionParser()
options.define('str', type=str)
options.define('basestring', type=basestring_type)
options.define('int', type=int)
options.define('float', type=float)
options.define('datetime', type=datetime.datetime)
options.define('timedelta', type=datetime.timedelta)
options.parse_command_line([
'main.py', '--str=asdf', '--basestring=qwer', '--int=42',
'--float=1.5', '--datetime=2013-04-28 05:16', '--timedelta=45s'
])
self.assertEqual(options.str, 'asdf')
self.assertEqual(options.basestring, 'qwer')
self.assertEqual(options.int, 42)
self.assertEqual(options.float, 1.5)
self.assertEqual(options.datetime,
datetime.datetime(2013, 4, 28, 5, 16))
self.assertEqual(options.timedelta, datetime.timedelta(seconds=45))
def test_mock_patch(self):
# ensure that our setattr hooks don't interfere with mock.patch
options = OptionParser()
options.define('foo', default=1)
options.parse_command_line(['main.py', '--foo=2'])
self.assertEqual(options.foo, 2)
with mock.patch.object(options.mockable(), 'foo', 3):
self.assertEqual(options.foo, 3)
self.assertEqual(options.foo, 2)
# Try nested patches mixed with explicit sets
with mock.patch.object(options.mockable(), 'foo', 4):
self.assertEqual(options.foo, 4)
options.foo = 5
self.assertEqual(options.foo, 5)
with mock.patch.object(options.mockable(), 'foo', 6):
self.assertEqual(options.foo, 6)
self.assertEqual(options.foo, 5)
self.assertEqual(options.foo, 2)
def test_subcommand(self):
base_options = OptionParser()
base_options.define("verbose", default=False)
sub_options = OptionParser()
sub_options.define("foo", type=str)
rest = base_options.parse_command_line(
["main.py", "--verbose", "subcommand", "--foo=bar"])
self.assertEqual(rest, ["subcommand", "--foo=bar"])
self.assertTrue(base_options.verbose)
rest2 = sub_options.parse_command_line(rest)
self.assertEqual(rest2, [])
self.assertEqual(sub_options.foo, "bar")
# the two option sets are distinct
try:
orig_stderr = sys.stderr
sys.stderr = StringIO()
with self.assertRaises(Error):
sub_options.parse_command_line(["subcommand", "--verbose"])
finally:
sys.stderr = orig_stderr
def test_parse_callbacks(self):
options = OptionParser()
self.called = False
def callback():
self.called = True
options.add_parse_callback(callback)
# non-final parse doesn't run callbacks
options.parse_command_line(["main.py"], final=False)
self.assertFalse(self.called)
# final parse does
options.parse_command_line(["main.py"])
self.assertTrue(self.called)
# callbacks can be run more than once on the same options
# object if there are multiple final parses
self.called = False
options.parse_command_line(["main.py"])
self.assertTrue(self.called)
def test_parse_command_line(self):
options = OptionParser()
options.define("port", default=80)
options.parse_command_line(["main.py", "--port=443"])
self.assertEqual(options.port, 443)
def test_multiple_int(self):
options = OptionParser()
options.define('foo', type=int, multiple=True)
options.parse_command_line(['main.py', '--foo=1,3,5:7'])
self.assertEqual(options.foo, [1, 3, 5, 6, 7])
def test_multiple_string(self):
options = OptionParser()
options.define('foo', type=str, multiple=True)
options.parse_command_line(['main.py', '--foo=a,b,c'])
self.assertEqual(options.foo, ['a', 'b', 'c'])