improve unit test stability

.github/workflows/maven.yml

@@ -33,7 +33,7 @@ jobs:
         cache: maven
     - name: Build with coveralls report
       if: ${{ env.cov_token != '' }}
-      run: mvn -B -DjacocoReports=jetcache-test/target/site/jacoco-aggregate/jacoco.xml clean test jacoco:report-aggregate coveralls:report -DrepoToken=${{ secrets.COV_TOKEN }}
+      run: mvn -B -DjacocoReports=jetcache-test/target/site/jacoco-aggregate/jacoco.xml clean test jacoco:report-aggregate coveralls:report -DrepoToken=${{ secrets.COV_TOKEN }} -Dtick=3
     - name: Build without coveralls report
       if: ${{ env.cov_token == '' }}
       run: mvn -B clean test

jetcache-test/src/main/java/com/alicp/jetcache/test/AbstractCacheTest.java

@@ -36,6 +36,8 @@
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.function.Function;
 
+import static com.alicp.jetcache.test.support.Tick.tick;
+
 /**
  * Created on 2016/10/8.
  *
@@ -928,7 +930,7 @@ private static class PenetrationTestThread extends Thread {
             this.cache = cache;
             this.loader = k -> {
                 try {
-                    Thread.sleep(75);
+                    Thread.sleep(tick(50));
                 } catch (InterruptedException e) {
                     throw new RuntimeException(e);
                 }

jetcache-test/src/main/java/com/alicp/jetcache/test/support/Tick.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright The Dongting Project
+ *
+ * The Dongting Project licenses this file to you 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:
+ *
+ *   https://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.alicp.jetcache.test.support;
+
+/**
+ * @author huangli
+ */
+public class Tick {
+    private static final int TICK = Integer.parseInt(System.getProperty("tick", "1"));
+
+    public static int tick(int value) {
+        return value * TICK;
+    }
+
+    public static long tick(long value) {
+        return value * TICK;
+    }
+}