fix test

engine.go

@@ -156,10 +156,20 @@ func (eng *Engine) measure(t time.Time, name string, value interface{}, ftype Fi
 		eng.once.Do(func() {
 			vsn := strings.TrimPrefix(runtime.Version(), "go")
 			parts := strings.Split(vsn, ".")
-			// this filters out weird compiled Go versions like tip.
-			// older Go version might be "go1.13"
+			// this filters out weird compiled Go versions like tip. len(parts)
+			// may equal 2 because older Go version might be "go1.13"
 			if len(parts) == 2 || len(parts) == 3 {
-				eng.measureOne(t, "go_version", 1, Gauge, []Tag{{"go_version", vsn}}...)
+				eng.Handler.HandleMeasures(t, Measure{
+
+					Name: "go_version",
+					Fields: []Field{{
+						Name:  "go_version",
+						Value: intValue(1),
+					}},
+					Tags: []Tag{
+						{"go_version", vsn},
+					},
+				})
 			}
 		})
 	}

netstats/listener_test.go

@@ -66,11 +66,25 @@ func TestListenerError(t *testing.T) {
 	vsn := strings.TrimPrefix(runtime.Version(), "go")
 	parts := strings.Split(vsn, ".")
 	measures := h.Measures()
+	measurePassed := false
 	if len(parts) == 2 || len(parts) == 3 {
-		if len(measures) != 1+1 {
-			t.Fatalf("expecting to get %d metrics, got back %d: %v", 1+1, len(measures), measures)
+		for _, measure := range measures {
+			if measure.Name != "go_version" {
+				continue
+			}
+			for _, tag := range measure.Tags {
+				if tag.Name != "go_version" {
+					continue
+				}
+				if tag.Value == vsn {
+					measurePassed = true
+				}
+			}
 		}
 	}
+	if !measurePassed {
+		t.Errorf("did not find correct tag for measure: %#v\n", measures)
+	}
 	var foundMetric stats.Measure
 	for i := range measures {
 		if measures[i].Name == "netstats.test.conn.error" {