def _test_help(self, action=None):
argv = ['didjvu', action, '--help']
argv = filter(None, argv)
stdout = io.BytesIO()
with interim(sys, argv=argv, stdout=stdout):
ap = cli.ArgumentParser(self.methods, 'djvu')
with assert_raises(SystemExit) as ecm:
ap.parse_args({})
assert_equal(ecm.exception.args, (0,))
assert_greater(len(stdout.getvalue()), 0)
def _test_action(self, action, *args):
stderr = io.BytesIO()
argv = ['didjvu', action]
argv += args
with interim(sys, argv=argv, stderr=stderr):
ap = cli.ArgumentParser(self.methods, 'djvu')
[selected_action, options] = ap.parse_args(self.actions)
assert_multi_line_equal(stderr.getvalue(), '')
assert_equal(selected_action, action)
return options
def test_bad_action(self, action='eggs'):
stderr = io.BytesIO()
with interim(sys, argv=['didjvu', action], stderr=stderr):
ap = cli.ArgumentParser(self.methods, 'djvu')
with assert_raises(SystemExit) as ecm:
ap.parse_args({})
assert_equal(ecm.exception.args, (2,))
assert_multi_line_equal(
stderr.getvalue(),
'usage: didjvu [-h] [--version] {{{actions}}} ...\n'.format(actions=','.join(self.anames)) +
"didjvu: error: invalid choice: 'eggs' (choose from {actions})\n".format(actions=', '.join(map(repr, self.anames)))
)
def test_no_args(self):
stderr = io.BytesIO()
with interim(sys, argv=['didjvu'], stderr=stderr):
ap = cli.ArgumentParser(self.methods, 'djvu')
with assert_raises(SystemExit) as ecm:
ap.parse_args({})
assert_equal(ecm.exception.args, (2,))
assert_multi_line_equal(
stderr.getvalue(),
'usage: didjvu [-h] [--version] {{{actions}}} ...\n'
'didjvu: error: too few arguments\n'.format(actions=','.join(self.anames))
)
def _test_action_no_args(self, action):
stderr = io.BytesIO()
with interim(sys, argv=['didjvu', action], stderr=stderr):
ap = cli.ArgumentParser(self.methods, 'djvu')
with assert_raises(SystemExit) as ecm:
ap.parse_args({})
assert_equal(ecm.exception.args, (2,))
assert_regex(
stderr.getvalue(),
(r'(?s)\A'
'usage: didjvu {action} .*\n'
'didjvu {action}: error: too few arguments\n'
r'\Z').format(action=action)
)
def test_init(self):
cli.ArgumentParser(self.methods, 'djvu')