Add tests on lists with duplicated key/id (fields.slug or items.value)

Failing tests to show that we should check unicity in the serializers
(for better error output)

Author: Mickaël Guérin

demo/tests/tests_integration.py

@@ -86,6 +86,15 @@ def test_simple(self):
                 field.accesses.filter(access_id=access, level=level).exists()
             )
 
+    def test_fields_slug(self):
+        data = deepcopy(form_data)
+        # duplicate field
+        data['fields'] *= 2
+        res = self.client.post(
+            reverse('formidable:form_create'), data, format='json'
+        )
+        self.assertEquals(res.status_code, 400)
+
     def test_with_items_in_fields(self):
         initial_count = Formidable.objects.count()
         res = self.client.post(
@@ -179,6 +188,17 @@ def test_create_field_on_update(self):
         self.assertEquals(form.pk, self.form.pk)
         self.assertEquals(form.fields.count(), 2)
 
+    def test_duplicate_items_update(self):
+        # create a form with items
+        data = deepcopy(form_data_items)
+        res = self.client.put(self.edit_url, data, format='json')
+        self.assertEquals(res.status_code, 200)
+        # update items with duplicate entries
+        data['fields'] *= 2
+        res = self.client.put(self.edit_url, data, format='json')
+        # expect validation error
+        self.assertEquals(res.status_code, 400)
+
     def test_delete_field_on_update(self):
         self.form.fields.create(
             type_id='text', slug='textslug', label='mytext',