add test for crontabber_state_json() view -- bug 888952

gistfile1.txt

    @mock.patch('requests.get')
    def test_crontabber_state_json(self, rget):
        url = reverse('crashstats.crontabber_state_json')

        def mocked_get(**options):
            assert 'crontabber_state' in options['url']
            return Response("""
                {
                    "state": {
                      "slow-one": {
                        "next_run": "2013-02-19 01:16:00.893834",
                        "first_run": "2012-11-05 23:27:07.316347",
                        "last_error": {
                          "traceback": "error error error",
                          "type": "<class 'sluggish.jobs.InternalError'>",
                          "value": "Have already run this for 2012-12-24 23:27"
                        },
                       "last_run": "2013-02-09 00:16:00.893834",
                        "last_success": "2012-12-24 22:27:07.316893",
                        "error_count": 6,
                        "depends_on": []
                      }
                    }
                }
                """)

        rget.side_effect = mocked_get

        response = self.client.get(url)
        struct = json.loads(response.content)
        eq_(response.status_code, 200)
        ok_(response.content.strip().startswith('{'))
        ok_('application/json' in response['Content-Type'])
        ok_('state' in response.content)
        eq_(struct['state']["slow-one"]["next_run"],
                "2013-02-19 01:16:00.893834")
        eq_(struct['state']["slow-one"]["last_success"],
                "2012-12-24 22:27:07.316893")
        eq_(struct['state']["slow-one"]["last_error"]["type"],
                "<class 'sluggish.jobs.InternalError'>")