Merge 47ec166 into e8297b0

shardingsphere-proxy/shardingsphere-proxy-backend/src/test/java/org/apache/shardingsphere/proxy/backend/communication/jdbc/connection/ResourceLockTest.java

@@ -0,0 +1,89 @@
+/*
+ * 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 org.apache.shardingsphere.proxy.backend.communication.jdbc.connection;
+
+import org.junit.Test;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.not;
+import static org.junit.Assert.assertThat;
+
+public final class ResourceLockTest {
+
+    @Test
+    public void assertDoAwait() throws InterruptedException {
+        int numberOfThreads = 10;
+        ResourceLock resourceLock = new ResourceLock();
+        ExecutorService service = Executors.newFixedThreadPool(numberOfThreads);
+        CountDownLatch latch = new CountDownLatch(numberOfThreads);
+        AtomicInteger counter = new AtomicInteger();
+        for (int i = 0; i < numberOfThreads; i++) {
+            service.submit(() -> {
+                resourceLock.doAwait();
+                counter.incrementAndGet();
+                latch.countDown();
+            });
+        }
+        latch.await();
+        assertThat(numberOfThreads, is(counter.get()));
+    }
+
+    @Test
+    public void assertDoAwaitThrowsException() throws InterruptedException {
+        int numberOfThreads = 10;
+        ResourceLock resourceLock = new ResourceLock();
+        ExecutorService service = Executors.newFixedThreadPool(numberOfThreads);
+        CountDownLatch latch = new CountDownLatch(numberOfThreads);
+        AtomicInteger counter = new AtomicInteger();
+        for (int i = 0; i < numberOfThreads; i++) {
+            service.submit(() -> {
+                resourceLock.doAwait();
+                counter.incrementAndGet();
+                latch.countDown();
+            });
+        }
+        latch.await(100, TimeUnit.MILLISECONDS);
+        service.shutdownNow();
+        assertThat(numberOfThreads, not(counter.get()));
+    }
+
+    @Test
+    public void assertDoNotify() throws InterruptedException {
+        int numberOfThreads = 10;
+        ResourceLock resourceLock = new ResourceLock();
+        ExecutorService service = Executors.newFixedThreadPool(numberOfThreads);
+        CountDownLatch latch = new CountDownLatch(numberOfThreads);
+        AtomicInteger counter = new AtomicInteger();
+        for (int i = 0; i < numberOfThreads; i++) {
+            service.submit(() -> {
+                resourceLock.doAwait();
+                counter.incrementAndGet();
+                latch.countDown();
+                resourceLock.doNotify();
+            });
+        }
+        latch.await();
+        assertThat(numberOfThreads, is(counter.get()));
+    }
+}