def test_mocker_with_exception(re_usable_db_mocker):
#making mock db_service to raise exception
# db_service raise exception when it called
re_usable_db_mocker.side_effect = Exception("oh noes!")
with raises(Exception):
#no output for below
#becuase when it call db_service , exception occurs
count_service('foo')
def test_simple_mocking(mocker):
"""
pytest-mock provides a fixture for easy, self-cleaning mocking
"""
# mock_db_service is a mock of the other_code.services.db_service function, if other_code.services.db_service is
# called, mock_db_service will be called instead.
mock_db_service = mocker.patch("other_code.services.db_service")
# this is the mock data we want to be returned instead of the data from the database.
mock_data = [(0, "fake row", 0.0)]
# we set the return value of mock_db_service (and so other_code.services.db_service) as the data we want to be
# returned
mock_db_service.return_value = mock_data
print("\n(Calling count_service with the DB mocked out...)")
# other_code.services.db_service is called in count_service, it counts how much results are retrieved from the
# call of other_code.services.db_service, as mock_data is returned, and its only one row, c is equal to 1
c = count_service("foo")
# check that we really called our mock_db_service mock with the right argument
mock_db_service.assert_called_with("foo")
# check the result (only one row in mock_data => c == 1)
assert c == 1
def test_simple_mocking(mocker):
"""
pytest-mock provides a fixture for easy, self-cleaning mocking
:param mocker:
:return:
"""
mock_db_service = mocker.patch("other_code.services.db_service",
autospec=True)
mock_data = [(0, "fake row", 0.0)]
mock_db_service.return_value = mock_data
print("\n(Calling countservice with the DB mocked out...)")
c = count_service('foo')
mock_db_service.assert_called_with('foo')
assert c == 1
def test_simple_mocking(mocker):
"""
pytest-mock provides a fixture for easy, self-cleaning mocking
"""
mock_db_service = mocker.patch("other_code.services.db_service",
autospec=True)
mock_data = [
(0, 'fake row', 0.0),
]
mock_db_service.return_value = mock_data
print "\nCalling count_service with the DB mocked out..."
c = count_service("foo")
mock_db_service.assert_called_with("foo")
assert c == 1
def test_simple_mocking(mocker):
"""
pytest-mock provides a fixture for easy, self-cleaning mocking
"""
#mocking : mock_db_servirce is a mock of db_service
mock_db_service = mocker.patch("other_code.services.db_service",
autospec=True)
mock_data = [(0, "fake row", 0.0)]
#changing return value of db_service to [(0, "fake row", 0.0)]
mock_db_service.return_value = mock_data
print("\n(Calling count_service with the DB mocked out...)")
c = count_service("foo") # uses db_service internally
# check whter db_service(mock) called with input as foo
mock_db_service.assert_called_with("foo") #
assert c == 1
def test_mocker_with_exception(re_usable_db_mocker):
re_usable_db_mocker.side_effect = Exception("Oh noes!")
with raises(Exception):
count_service("foo")
def test_re_usable_mocker(re_usable_db_mocker):
c = count_service("foo")
re_usable_db_mocker.assert_called_with("foo")
assert c == 1
def test_re_usable_mocker(re_usable_mocker):
c = count_service('foo')
re_usable_mocker.assert_called_with('foo')
assert c == 1
def test_re_usable_mocker(re_usable_db_mocker):
c = count_service('foo') # uses db_service internally
#cofirm whter count_service used db_service('foo')
re_usable_db_mocker.assert_called_with(
'foo') # check wheter db_service called with foo
assert c == 1
