Mock Directories

The first step to using mockldap is to define some static LDAP content and install it as a mock LDAPObject. For this, you will use mockldap.MockLdap. Only one instance of this class should exist at a time; setUpClass() is a good place to instantiate it.

MockLdap can mock multiple LDAP directories, identified by URI. You can provide directory content for URIs individually and you can also provide default content for connections to any unrecognized URI. If the code under test is only expected to make one LDAP connection, the simplest option is just to provide default content. If you need multiple directories, you can call set_directory() on your MockLdap instance.

LDAP content takes the form of a Python dictionary. Each key is a distinguished name in string form; each value is a dictionary mapping attributes to lists of values. In other words, directory.items() should take the same form as results from search_s().

directory = {
    'uid=alice,ou=people,o=test': {
        'uid': ['alice'],
        'objectClass': ['person', 'organizationalPerson', 'inetOrgPerson', 'posixAccount'],
        'userPassword': ['password'],
        'uidNumber': ['1000'],
        'gidNumber': ['1000'],
        'givenName': ['Alice'],
        'sn': ['Adams']
    },
    'cn=active,ou=groups,o=test': {
        'cn': ['active'],
        'objectClass': ['groupOfNames'],
        'member': ['uid=alice,ou=people,o=test']
    },
}

MockLdap is stateful. The overview shows a complete example, but following are the enumerated steps.

For some collection of tests:

• Instantiate MockLdap. Optionally pass in default directory contents.
• Add content for any additional directories. This is only necessary if the code under test will connect to multiple LDAP directories.

For each test:

• Just before an individual test, call start(). This will instantiate your mock directories and patch ldap.initialize(). You may need to call this multiple times if initialize() is accessed by multiple names.
• Any time during your test, you can access an individual LDAPObject as mockldap[uri]. This will let you seed return values for LDAP operations and recover the record of which operations were performed.
• After the test, call stop() or stop_all().

Warning

The code under test must not keep an LDAP “connection” open across individual test cases. If it does, it will be sharing a mock LDAPObject across tests, so any state mutations will persist.

MockLdap