# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Unit tests for mox3_stubout."""
import datetime
import math
import os
import unittest
from os import path
from pyfakefs import mox3_stubout
from pyfakefs.tests import mox3_stubout_example
class NoPanicMath:
real_math = math
@staticmethod
def fabs(_x):
return 42
def __getattr__(self, name):
"""Forwards any unfaked calls to the standard module."""
return getattr(self.real_math, name)
class ExistingPath:
real_path = path
@staticmethod
def exists(_path):
return True
def __getattr__(self, name):
"""Forwards any unfaked calls to the standard module."""
return getattr(self.real_path, name)
class GroundhogDate(datetime.date):
@classmethod
def today(cls):
return datetime.date(1993, 2, 2)
class StubOutForTestingTest(unittest.TestCase):
def setUp(self):
super().setUp()
self.stubber = mox3_stubout.StubOutForTesting()
def test_stubout_method_with_set(self):
non_existing_path = "non_existing_path"
self.assertFalse(mox3_stubout_example.check_if_exists(non_existing_path))
self.stubber.set(os.path, "exists", lambda x: True)
self.assertTrue(mox3_stubout_example.check_if_exists(non_existing_path))
self.stubber.unset_all()
self.assertFalse(mox3_stubout_example.check_if_exists(non_existing_path))
def test_stubout_class_with_set(self):
self.assertGreater(mox3_stubout_example.tomorrow().year, 2000)
self.stubber.set(datetime, "date", GroundhogDate)
self.assertEqual(mox3_stubout_example.tomorrow(), datetime.date(1993, 2, 3))
self.stubber.unset_all()
self.assertGreater(mox3_stubout_example.tomorrow().year, 2000)
def test_stubout_module_with_set(self):
self.assertEqual(10, mox3_stubout_example.fabs(-10))
self.stubber.set(mox3_stubout_example, "math", NoPanicMath)
self.assertEqual(42, mox3_stubout_example.fabs(-10))
self.stubber.unset_all()
self.assertEqual(10, mox3_stubout_example.fabs(-10))
def test_set_raise_if_unknown_attribute(self):
self.assertRaises(
AttributeError,
self.stubber.set,
os.path,
"exists_not",
lambda x: True,
)
self.assertRaises(
AttributeError,
self.stubber.set,
datetime,
"tomorrow",
GroundhogDate,
)
self.assertRaises(
AttributeError,
self.stubber.set,
mox3_stubout_example,
"math1",
NoPanicMath,
)
def test_stubout_method_with_smart_set(self):
non_existing_path = "non_existing_path"
self.stubber.smart_set(os.path, "exists", lambda x: True)
self.assertTrue(mox3_stubout_example.check_if_exists(non_existing_path))
self.stubber.smart_unset_all()
self.assertFalse(mox3_stubout_example.check_if_exists(non_existing_path))
def test_stubout_class_with_smart_set(self):
self.stubber.smart_set(datetime, "date", GroundhogDate)
self.assertEqual(mox3_stubout_example.tomorrow(), datetime.date(1993, 2, 3))
self.stubber.smart_unset_all()
self.assertGreater(mox3_stubout_example.tomorrow().year, 2000)
def test_stubout_module_with_smart_set(self):
self.assertEqual(10, mox3_stubout_example.fabs(-10))
self.stubber.smart_set(mox3_stubout_example, "math", NoPanicMath)
self.assertEqual(42, mox3_stubout_example.fabs(-10))
self.stubber.smart_unset_all()
self.assertEqual(10, mox3_stubout_example.fabs(-10))
def test_stubout_submodule_with_smart_set(self):
# this one does not work with Set
non_existing_path = "non_existing_path"
self.assertFalse(mox3_stubout_example.check_if_exists(non_existing_path))
self.stubber.smart_set(os, "path", ExistingPath)
self.assertTrue(mox3_stubout_example.check_if_exists(non_existing_path))
self.stubber.smart_unset_all()
self.assertFalse(mox3_stubout_example.check_if_exists(non_existing_path))
def test_smart_set_raise_if_unknown_attribute(self):
self.assertRaises(
AttributeError,
self.stubber.smart_set,
os.path,
"exists_not",
lambda x: True,
)
self.assertRaises(
AttributeError,
self.stubber.smart_set,
datetime,
"tomorrow",
GroundhogDate,
)
self.assertRaises(
AttributeError,
self.stubber.smart_set,
mox3_stubout_example,
"math1",
NoPanicMath,
)
if __name__ == "__main__":
unittest.main()
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