Handles multiple collisions with the same key.

Author: Pablo Chinea

graphene_django/converter.py

@@ -34,7 +34,7 @@ def get_choices(choices):
                 yield choice
         else:
             name = convert_choice_name(value)
-            if name in converted_names:
+            while name in converted_names:
                 name += '_' + str(len(converted_names))
             converted_names.append(name)
             description = help_text

graphene_django/tests/test_converter.py

@@ -178,6 +178,7 @@ class Meta:
 
 def test_field_with_choices_collision():
     field = models.CharField(help_text='Timezone', choices=(
+        ('Etc/GMT+1+2', 'Fake choice to produce double collision'),
         ('Etc/GMT+1', 'Greenwich Mean Time +1'),
         ('Etc/GMT-1', 'Greenwich Mean Time -1'),
     ))