i.assert.fail(this.$.ajax.url, this.response.url,
                             'Race condition in response attribute');
            return;
          }
          this.passed = true;
        },
        passedChanged: function() {
          if (this.passed && this.testResult == 'pending...') {
            this.testResult = 'PASS';
            clearTimeout(this.finalTimeout);
            done();
          }
        },
        requestChanged: function(o, n) {
          this.requests.push({
            'statusTe