text: import responses
  import json
  
  from .helpers import mock_file, ClientTestCase
  
  
  class TestClientRefund(ClientTestCase):
  
      def setUp(self):
          super(TestClientRefund, self).setUp()
          self.base_url = '{}/refunds'.format(self.base_url)
  
      @responses.activate
      def test_refund_all(self):
          result = mock_file('refund_collection')
          url = self.base_url
          responses.add(responses.GET, url, status=200, body=json.dumps(result),
                        match_querystring=True)
          self.assertEqual(self.client.refund.all(), result)
  
      @responses.activate
      def test_refund_fetch(self):
          result = mock_file('fake_refund')
          url = '{}/{}'.format(self.base_url, self.refund_id)
          responses.add(responses.GET, url, status=200, body=json.dumps(result),
                        match_querystring=True)
          self.assertEqual(self.client.refund.fetch(self.refund_id), result)
  
      @responses.activate
      def test_refund_create(self):
          init = {'payment_id': self.payment_id}
          result = mock_file('fake_refund')
          url = self.base_url
          responses.add(responses.POST, url, status=200, body=json.dumps(result),
                        match_querystring=True)
          self.assertEqual(self.client.refund.create(init), result)
  
      @responses.activate
      def test_refund_edit(self):
          param = {
                     "notes": {
                     "notes_key_1":"Beam me up Scotty.",
                     "notes_key_2":"Engage"
                      }
                  }
          result = mock_file('fake_refund')
          url = "{}/{}".format(self.base_url,'rfnd_DfjjhJC6eDvUAi')
          responses.add(responses.PATCH, url, status=200, body=json.dumps(result),
                        match_querystring=True)
          self.assertEqual(self.client.refund.edit('rfnd_DfjjhJC6eDvUAi', param), result)
  