def test_single_arg_missing(self):
"""Test that MissingParameterError is raised if the
single required parameter is missing.
"""
from plone.api.exc import MissingParameterError
_func = required_parameters('arg1')(undecorated_func)
self.assertRaises(MissingParameterError, _func)
def test_one_missing_one_provided(self):
"""Test that MissingParameterError is raised if only one of the
required parameters is missing.
"""
from plone.api.exc import MissingParameterError
_func = required_parameters('arg1', 'arg2')(undecorated_func)
self.assertRaises(MissingParameterError, _func, 'hello')
def test_single_arg_missing(self):
"""Test that MissingParameterError is raised if the
single required parameter is missing.
"""
from plone.api.exc import MissingParameterError
_func = required_parameters('arg1')(undecorated_func)
self.assertRaises(MissingParameterError, _func)
def test_one_missing_one_provided(self):
"""Test that MissingParameterError is raised if only one of the
required parameters is missing.
"""
from plone.api.exc import MissingParameterError
_func = required_parameters('arg1', 'arg2')(undecorated_func)
self.assertRaises(MissingParameterError, _func, 'hello')
def test_single_positional_arg_provided(self):
"""Test for passing a single required parameter
as a positional argument.
"""
_func = required_parameters('arg1')(undecorated_func)
self.assertEqual(
_func('hello'),
'foo',
)
def test_single_keyword_arg_provided(self):
"""Test for passing a single required parameter
as a keyword argument.
"""
_func = required_parameters('arg1')(undecorated_func)
self.assertEqual(
_func(arg1='hello'),
'foo',
)
def test_non_existant_required_arg(self):
"""Test that ValueError is returned if the decorator requires
a parameter that doesn't exist in the function signature.
"""
with self.assertRaises(ValueError):
_func = required_parameters('arg1', 'wibble', 'wobble')
_func(undecorated_func)
with self.assertRaises(ValueError):
_func = mutually_exclusive_parameters('arg1', 'wibble', 'wobble')
_func(undecorated_func)
def test_non_existant_required_arg(self):
"""Test that ValueError is returned if the decorator requires
a parameter that doesn't exist in the function signature.
"""
self.assertRaises(
ValueError,
required_parameters('arg1', 'wibble', 'wobble'),
undecorated_func)
self.assertRaises(
ValueError,
mutually_exclusive_parameters('arg1', 'wibble', 'wobble'),
undecorated_func)
def test_decorator_works_the_same_as_explicit_calling(self):
"""Check that calling the decorator with the function as an argument
is equivalent to decorating the function.
"""
@required_parameters('arg1')
def _func1_decorated(arg1=None, arg2=None, arg3=None):
"""This is my docstring"""
pass
def _func2_undecorated(arg1=None, arg2=None, arg3=None):
"""This is my docstring"""
pass
_func2_decorated = required_parameters('arg1')(_func2_undecorated)
# Check that the decorated function gets the correct docstring
self.assertEqual(_func1_decorated.__doc__, 'This is my docstring')
# Check that both functions have the same docstring
self.assertEqual(_func1_decorated.__doc__, _func2_decorated.__doc__)
def test_decorator_works_the_same_as_explicit_calling(self):
"""Check that calling the decorator with the function as an argument
is equivalent to decorating the function.
"""
@required_parameters('arg1')
def _func1_decorated(arg1=None, arg2=None, arg3=None):
"""This is my docstring"""
pass
def _func2_undecorated(arg1=None, arg2=None, arg3=None):
"""This is my docstring"""
pass
_func2_decorated = required_parameters('arg1')(_func2_undecorated)
# Check that the decorated function gets the correct docstring
self.assertEquals(_func1_decorated.__doc__, 'This is my docstring')
# Check that both functions have the same docstring
self.assertEquals(_func1_decorated.__doc__, _func2_decorated.__doc__)