add test for cluster metric

Signed-off-by: yunfeiyanggzq <[email protected]>

sentinel-cluster/sentinel-cluster-server-default/src/main/java/com/alibaba/csp/sentinel/cluster/flow/statistic/metric/ClusterParamMetric.java

@@ -89,6 +89,7 @@ public double getAvg(Object value) {
     }
 
     public Map<Object, Double> getTopValues(int number) {
+        AssertUtil.isTrue(number>0,"number must be positive");
         metric.currentWindow();
         List<CacheMap<Object, LongAdder>> buckets = metric.values();
 

sentinel-cluster/sentinel-cluster-server-default/src/test/java/com/alibaba/csp/sentinel/cluster/flow/statistic/metric/ClusterMetricTest.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.csp.sentinel.cluster.flow.statistic.metric;
+
+import com.alibaba.csp.sentinel.cluster.flow.statistic.data.ClusterFlowEvent;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ClusterMetricTest {
+
+    @Test
+    public void testTryOccupyNext(){
+        ClusterMetric metric=new ClusterMetric(5,25);
+        metric.add(ClusterFlowEvent.PASS,1);
+        metric.add(ClusterFlowEvent.PASS,2);
+        metric.add(ClusterFlowEvent.PASS,1);
+        metric.add(ClusterFlowEvent.BLOCK,1);
+        Assert.assertEquals(4,metric.getSum(ClusterFlowEvent.PASS));
+        Assert.assertEquals(1,metric.getSum(ClusterFlowEvent.BLOCK));
+        Assert.assertEquals(160,metric.getAvg(ClusterFlowEvent.PASS),0.01);
+        Assert.assertEquals(200,metric.tryOccupyNext(ClusterFlowEvent.PASS, 111, 900));
+        metric.add(ClusterFlowEvent.PASS,1);
+        metric.add(ClusterFlowEvent.PASS,2);
+        metric.add(ClusterFlowEvent.PASS,1);
+        Assert.assertEquals(200,metric.tryOccupyNext(ClusterFlowEvent.PASS, 222, 900));
+        metric.add(ClusterFlowEvent.PASS,1);
+        metric.add(ClusterFlowEvent.PASS,2);
+        metric.add(ClusterFlowEvent.PASS,1);
+        Assert.assertEquals(0,metric.tryOccupyNext(ClusterFlowEvent.PASS, 333, 900));
+    }
+}

sentinel-cluster/sentinel-cluster-server-default/src/test/java/com/alibaba/csp/sentinel/cluster/flow/statistic/metric/ClusterParamMetricTest.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.csp.sentinel.cluster.flow.statistic.metric;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class ClusterParamMetricTest {
+
+    @Test
+    public void testClusterParamMetric() throws InterruptedException {
+        Map<Object, Double> topMap = new HashMap<Object, Double>();
+        ClusterParamMetric metric=new ClusterParamMetric(5,25,100);
+        metric.addValue("e1",-1);
+        metric.addValue("e1",-2);
+        metric.addValue("e1",-54);
+        metric.addValue("e1",-34);
+        metric.addValue("e1",2);
+        metric.addValue("e1",2);
+        metric.addValue("e2",100);
+        metric.addValue("e2",23);
+        metric.addValue("e3",100);
+        metric.addValue("e3",230);
+        Assert.assertEquals(-86,metric.getSum("e1"));
+        Assert.assertEquals(-3440,metric.getAvg("e1"),0.01);
+        topMap.put("e3", (double) 13200);
+        Assert.assertEquals(topMap,metric.getTopValues(1));
+        topMap.put("e2", (double) 4920);
+        topMap.put("e1", (double) -3440);
+        Assert.assertEquals(topMap,metric.getTopValues(5));
+        metric.addValue("e2",100);
+        metric.addValue("e2",23);
+        Assert.assertEquals(246,metric.getSum("e2"));
+        Assert.assertEquals(9840,metric.getAvg("e2"),0.01);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public  void testIllegalArgument(){
+        ClusterParamMetric metric=new ClusterParamMetric(5,25,100);;
+        metric.getTopValues(-1);
+    }
+}