tests: add check of basketcell get_badge method

tests/test_lingo_cells.py

@@ -1,3 +1,5 @@
+# -*- coding: utf-8 -*-
+
 import pytest
 
 from django.contrib.auth.models import User
@@ -48,8 +50,10 @@ def test_basket_cell(regie, user):
     context = Context({'request': RequestFactory().get('/')})
     context['request'].user = None
     assert cell.is_relevant(context) is False
+    assert cell.get_badge(context) is None
     context['request'].user = user
     assert cell.is_relevant(context) is False
+    assert cell.get_badge(context) is None
     item  = BasketItem()
     item.user = user
     item.regie = regie
@@ -66,6 +70,7 @@ def test_basket_cell(regie, user):
     item_anonymous.save()
 
     assert cell.is_relevant(context) is True
+    assert cell.get_badge(context) == {'badge': u'12345€'}
 
     item.cancellation_date = timezone.now()
     item.save()