feat(infra): add SyncPutQueuePolicyTest test class #1336 (#1344)

* feat(infra): add SyncPutQueuePolicyTest test class #1336
1. add SyncPutQueuePolicyTest test class

Co-authored-by: rnmb<19276209+rnmb@users.noreply.github.com>

* feat(infra): SyncPutQueuePolicyTest #1336
1. Add the open source agreement to the top, and leave a blank line with package

Co-authored-by: rnmb<19276209+rnmb@users.noreply.github.com>

infra/common/src/test/java/cn/hippo4j/common/executor/support/SyncPutQueuePolicyTest.java

@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF 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
+ *
+ *     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 cn.hippo4j.common.executor.support;
+
+import cn.hippo4j.common.toolkit.ThreadUtil;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.IntStream;
+
+/**
+ * Synchronous placement queue policy implementation test
+ */
+public class SyncPutQueuePolicyTest {
+
+    /**
+     * test thread pool rejected execution
+     */
+    @Test
+    public void testRejectedExecution() {
+        SyncPutQueuePolicy syncPutQueuePolicy = new SyncPutQueuePolicy();
+        ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(1, 2,
+                60, TimeUnit.SECONDS, new ArrayBlockingQueue<>(1), syncPutQueuePolicy);
+        threadPoolExecutor.prestartAllCoreThreads();
+
+        Assert.assertSame(syncPutQueuePolicy, threadPoolExecutor.getRejectedExecutionHandler());
+        IntStream.range(0, 4).forEach(s -> {
+            threadPoolExecutor.execute(() -> ThreadUtil.sleep(200L));
+        });
+        threadPoolExecutor.shutdown();
+        while (!threadPoolExecutor.isTerminated()) {
+        }
+        Assert.assertEquals(4, threadPoolExecutor.getCompletedTaskCount());
+    }
+}