Clean code related to kfet password

kfet/tests/test_models.py

@@ -0,0 +1,25 @@
+from django.contrib.auth import get_user_model
+from django.test import TestCase
+
+from kfet.models import Account
+
+User = get_user_model()
+
+
+class AccountTests(TestCase):
+
+    def setUp(self):
+        self.account = Account(trigramme='000')
+        self.account.save({'username': 'user'})
+
+    def test_password(self):
+        self.account.change_pwd('anna')
+        self.account.save()
+
+        self.assertEqual(Account.objects.get_by_password('anna'), self.account)
+
+        with self.assertRaises(Account.DoesNotExist):
+            Account.objects.get_by_password(None)
+
+        with self.assertRaises(Account.DoesNotExist):
+            Account.objects.get_by_password('bernard')