def test_value_instance_float(self):
     self.assertEqual(
         extract_metric({
             "e": 0,
             "v": None,
             "m": "foo",
             "t": []
         }), None)
 def test_tags_instance(self):
     self.assertEqual(
         extract_metric({
             "e": 0,
             "v": 1,
             "m": "foo",
             "t": 666
         }), None)
 def test_missing_keys(self):
     self.assertEqual(extract_metric({"e": 0, "v": 1, "m": "foo"}), None)
 def test_empty_event(self):
     self.assertEqual(extract_metric({}), None)