test: skip ldapsync if it is not available

modoboa/ldapsync/tests.py

@@ -4,8 +4,6 @@ from __future__ import unicode_literals
 
 from unittest import skipIf
 
-import ldap
-
 from django.utils import six
 from django.utils.encoding import force_bytes, force_str
 
@@ -13,7 +11,9 @@ from modoboa.core import factories as core_factories
 from modoboa.lib.tests import NO_LDAP, ModoTestCase
 from modoboa.parameters import tools as param_tools
 
-from . import lib
+if not NO_LDAP:
+    import ldap
+    from . import lib
 
 
 @skipIf(NO_LDAP, "No ldap module installed")

test_project/test_project/settings.py

@@ -70,10 +70,16 @@ MODOBOA_APPS = (
     "modoboa.limits",
     "modoboa.parameters",
     "modoboa.dnstools",
-    "modoboa.ldapsync",
     # Modoboa extensions here.
 )
 
+try:
+    import ldap  # noqa: F401
+except ImportError:
+    pass
+else:
+    MODOBOA_APPS += ("modoboa.ldapsync",)
+
 INSTALLED_APPS += MODOBOA_APPS
 
 AUTH_USER_MODEL = "core.User"