Class MyCollector

tests/test_exposition.py:188–192

                return 123.0

        class MyCollector:
            def collect(self):
                metric = Metric("nonnumber", "Non number", 'untyped')
                metric.add_sample("nonnumber", {}, MyNumber())
                yield metric

        self.registry.register(MyCollector())
        self.assertEqual(b'# HELP nonnumber Non number\n# TYPE nonnumber untyped\nnonnumber 123.0\n',