diff --git a/metrics/metrics-core/pom.xml b/metrics/metrics-core/pom.xml
index 889b11e..3e7fb60 100644
--- a/metrics/metrics-core/pom.xml
+++ b/metrics/metrics-core/pom.xml
@@ -45,7 +45,10 @@
       <groupId>org.apache.servicecomb</groupId>
       <artifactId>common-rest</artifactId>
     </dependency>
-
+    <dependency>
+      <groupId>org.apache.servicecomb</groupId>
+      <artifactId>foundation-test-scaffolding</artifactId>
+    </dependency>
     <dependency>
       <groupId>org.apache.servicecomb</groupId>
       <artifactId>registry-service-center</artifactId>
@@ -63,10 +66,6 @@
     </dependency>
     <dependency>
       <groupId>org.apache.servicecomb</groupId>
-      <artifactId>foundation-test-scaffolding</artifactId>
-    </dependency>
-    <dependency>
-      <groupId>org.apache.servicecomb</groupId>
       <artifactId>transport-highway</artifactId>
       <scope>test</scope>
     </dependency>
diff --git a/metrics/metrics-core/src/test/java/org/apache/servicecomb/metrics/core/TestInvocationMetersInitializer.java b/metrics/metrics-core/src/test/java/org/apache/servicecomb/metrics/core/TestInvocationMetersInitializer.java
index b309489..19a8641 100644
--- a/metrics/metrics-core/src/test/java/org/apache/servicecomb/metrics/core/TestInvocationMetersInitializer.java
+++ b/metrics/metrics-core/src/test/java/org/apache/servicecomb/metrics/core/TestInvocationMetersInitializer.java
@@ -16,6 +16,7 @@
  */
 package org.apache.servicecomb.metrics.core;
 
+import com.netflix.spectator.api.Measurement;
 import org.apache.servicecomb.core.Const;
 import org.apache.servicecomb.core.Invocation;
 import org.apache.servicecomb.core.event.InvocationFinishEvent;
@@ -24,7 +25,6 @@
 import org.apache.servicecomb.foundation.metrics.registry.GlobalRegistry;
 import org.apache.servicecomb.metrics.core.meter.invocation.MeterInvocationConst;
 import org.apache.servicecomb.swagger.invocation.InvocationType;
-import org.apache.servicecomb.swagger.invocation.Response;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -35,7 +35,8 @@
 
 import mockit.Expectations;
 import mockit.Mocked;
-import org.junit.jupiter.api.Assertions;
+
+import java.util.List;
 
 public class TestInvocationMetersInitializer {
   EventBus eventBus = new EventBus();
@@ -49,9 +50,6 @@
   @Mocked
   Invocation invocation;
 
-  @Mocked
-  Response response;
-
   @Before
   public void setup() {
     globalRegistry.add(registry);
@@ -105,41 +103,40 @@
 
     MeasurementTree tree = new MeasurementTree();
     tree.from(registry.iterator(), new MeasurementGroupConfig(MeterInvocationConst.INVOCATION_NAME));
-    Assertions.assertEquals(""
-            + "[Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=total:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=total:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=total:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=prepare:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=prepare:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=prepare:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_send_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_send_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_send_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_get_connection:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_get_connection:statistic=totalTime:status=0:transport=rest:type=stage,0,8.0E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_get_connection:statistic=max:status=0:transport=rest:type=stage,0,4.0E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_write_to_buf:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_write_to_buf:statistic=totalTime:status=0:transport=rest:type=stage,0,1.0E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_write_to_buf:statistic=max:status=0:transport=rest:type=stage,0,5.0E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wait_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wait_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wait_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wake_consumer:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wake_consumer:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wake_consumer:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9)]",
-        tree.findChild(MeterInvocationConst.INVOCATION_NAME).getMeasurements().toString());
+    List<Measurement> measurements = tree.findChild(MeterInvocationConst.INVOCATION_NAME).getMeasurements();
+    AssertUtil.assertMeasure(measurements, 0, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=total:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 1, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=total:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 2, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=total:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, 3, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 4, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 5, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, 6, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 7, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 8, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=handlers_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, 9, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=prepare:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 10, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=prepare:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 11, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=prepare:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, 12, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 13, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 14, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, 15, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_send_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 16, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_send_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 17, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_send_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, 18, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_get_connection:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 19, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_get_connection:statistic=totalTime:status=0:transport=rest:type=stage,0,8.0E-9");
+    AssertUtil.assertMeasure(measurements, 20, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_get_connection:statistic=max:status=0:transport=rest:type=stage,0,4.0E-9");
+    AssertUtil.assertMeasure(measurements, 21, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_write_to_buf:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 22, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_write_to_buf:statistic=totalTime:status=0:transport=rest:type=stage,0,1.0E-8");
+    AssertUtil.assertMeasure(measurements, 23, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_write_to_buf:statistic=max:status=0:transport=rest:type=stage,0,5.0E-9");
+    AssertUtil.assertMeasure(measurements, 24, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wait_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 25, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wait_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 26, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wait_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, 27, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wake_consumer:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 28, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wake_consumer:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 29, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=consumer_wake_consumer:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, 30, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, 31, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, 32, "servicecomb.invocation:operation=m.s.o:role=CONSUMER:stage=client_filters_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
   }
 
   @Test
@@ -196,53 +193,53 @@
 
     MeasurementTree tree = new MeasurementTree();
     tree.from(registry.iterator(), new MeasurementGroupConfig(MeterInvocationConst.INVOCATION_NAME));
-    Assertions.assertEquals(
-        "[Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=total:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=total:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=total:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=prepare:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=prepare:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=prepare:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_send_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_send_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_send_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_get_connection:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_get_connection:statistic=totalTime:status=0:transport=rest:type=stage,0,8.0E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_get_connection:statistic=max:status=0:transport=rest:type=stage,0,4.0E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_write_to_buf:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_write_to_buf:statistic=totalTime:status=0:transport=rest:type=stage,0,1.0E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_write_to_buf:statistic=max:status=0:transport=rest:type=stage,0,5.0E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wait_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wait_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wait_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wake_consumer:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wake_consumer:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wake_consumer:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=queue:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=queue:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=queue:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=producer_send_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=producer_send_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=EDGE:stage=producer_send_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9)]",
-        tree.findChild(MeterInvocationConst.INVOCATION_NAME).getMeasurements().toString());
+    List<Measurement> measurements = tree.findChild(MeterInvocationConst.INVOCATION_NAME).getMeasurements();
+    int i = 0;
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=total:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=total:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=total:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=handlers_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=prepare:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=prepare:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=prepare:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_send_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_send_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_send_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_get_connection:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_get_connection:statistic=totalTime:status=0:transport=rest:type=stage,0,8.0E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_get_connection:statistic=max:status=0:transport=rest:type=stage,0,4.0E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_write_to_buf:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_write_to_buf:statistic=totalTime:status=0:transport=rest:type=stage,0,1.0E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_write_to_buf:statistic=max:status=0:transport=rest:type=stage,0,5.0E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wait_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wait_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wait_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wake_consumer:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wake_consumer:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=consumer_wake_consumer:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=client_filters_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=queue:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=queue:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=queue:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=server_filters_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=producer_send_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=producer_send_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i, "servicecomb.invocation:operation=m.s.o:role=EDGE:stage=producer_send_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
   }
 
   @Test
@@ -287,34 +284,34 @@
 
     MeasurementTree tree = new MeasurementTree();
     tree.from(registry.iterator(), new MeasurementGroupConfig(MeterInvocationConst.INVOCATION_NAME));
-    Assertions.assertEquals(""
-            + "[Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=total:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=total:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=total:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=prepare:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=prepare:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=prepare:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=queue:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=queue:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=queue:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=execution:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=execution:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=execution:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_request:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=producer_send_response:statistic=count:status=0:transport=rest:type=stage,0,2.0), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=producer_send_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8), "
-            + "Measurement(servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=producer_send_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9)]",
-        tree.findChild(MeterInvocationConst.INVOCATION_NAME).getMeasurements().toString());
+    List<Measurement> measurements = tree.findChild(MeterInvocationConst.INVOCATION_NAME).getMeasurements();
+    int i = 0;
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=total:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=total:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=total:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=handlers_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=prepare:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=prepare:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=prepare:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=queue:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=queue:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=queue:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=execution:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=execution:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=execution:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_request:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_request:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_request:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=server_filters_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=producer_send_response:statistic=count:status=0:transport=rest:type=stage,0,2.0");
+    AssertUtil.assertMeasure(measurements, i++, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=producer_send_response:statistic=totalTime:status=0:transport=rest:type=stage,0,1.8000000000000002E-8");
+    AssertUtil.assertMeasure(measurements, i, "servicecomb.invocation:operation=m.s.o:role=PRODUCER:stage=producer_send_response:statistic=max:status=0:transport=rest:type=stage,0,9.000000000000001E-9");
   }
 }