if err := testutil.GatherAndCompare(legacyregistry.DefaultGatherer, strings.NewReader(tc.want), tc.metrics...); err != nil {
				t.Fatal(err)
			}
		})
	}
}

func TestPrefixToMetrics(t *testing.T) {
	testErr := fmt.Errorf("test error")
	transformerErr := fmt.Errorf("test error")
	otherTransformer := PrefixTransformer{Prefix: []byte("other:"), Transformer: &testTransformer{from: []byte("value1")}}