Need to invalidate cache here now

trans/tests/models.py

@@ -183,6 +183,7 @@ class ProjectTest(RepoTestCase):
     def test_create(self):
         project = self.create_project()
         self.assertTrue(os.path.exists(project.get_path()))
+        self.assertTrue(project.slug in project.get_path())
 
     def test_rename(self):
         project = self.create_project()
@@ -211,6 +212,9 @@ class ProjectTest(RepoTestCase):
         backup = appsettings.GIT_ROOT
         appsettings.GIT_ROOT = '/weblate-nonexisting-path'
 
+        # Invalidate cache
+        project._dir_path = None
+
         self.assertRaisesMessage(
             ValidationError,
             'Could not create project directory',