How to use MagicMock and some fixtures for python testing

ldap_test.py

from unittest.mock import MagicMock
from pathlib import Path

# this creates an ldap server entry, which has an info method
# and populates it with some static fixture data
with open(Path(__file__).parent / 'testdata/user_entry1.json') as f:
    ldap_server_entry_json = f.read()
ldap_server_entry = MagicMock(**{'info.return_value': ldap_server_entry_json})

# this uses the entry, mocking the search method on the ldap_server object
ldap_server = MagicMock(**{'search.return_value': [self.ldap_server_entry]})

# you could also fake an exception
sad_ldap_server = MagicMock(**{'search.side_effect': ValueError('oops!')})