1 files changed, 94 insertions, 0 deletions
diff --git a/zookeeper-server/src/test/java/org/apache/zookeeper/server/ZookeeperServerSnapshotTest.java b/zookeeper-server/src/test/java/org/apache/zookeeper/server/ZookeeperServerSnapshotTest.java
new file mode 100644
index 000000000..c9d74a4cb
--- /dev/null
+++ b/zookeeper-server/src/test/java/org/apache/zookeeper/server/ZookeeperServerSnapshotTest.java
@@ -0,0 +1,94 @@
+/*
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.zookeeper.server;
+
+import static org.apache.zookeeper.test.ClientBase.CONNECTION_TIMEOUT;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import java.io.File;
+import org.apache.zookeeper.CreateMode;
+import org.apache.zookeeper.PortAssignment;
+import org.apache.zookeeper.ZKTestCase;
+import org.apache.zookeeper.ZooDefs.Ids;
+import org.apache.zookeeper.ZooKeeper;
+import org.apache.zookeeper.test.ClientBase;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+public class ZookeeperServerSnapshotTest extends ZKTestCase {
+    private static final String BASE_PATH = "/takeSnapshotTest";
+    private static final int NODE_COUNT = 10;
+    private static final String HOST_PORT = "127.0.0.1:" + PortAssignment.unique();
+
+    @TempDir
+    static File dataDir;
+
+    @TempDir
+    static File logDir;
+
+    @Test
+    public void testTakeSnapshot() throws Exception {
+        ZooKeeperServer zks = new ZooKeeperServer(dataDir, logDir, 3000);
+        ZooKeeperServer.setSerializeLastProcessedZxidEnabled(true);
+
+        final int port = Integer.parseInt(HOST_PORT.split(":")[1]);
+        final ServerCnxnFactory serverCnxnFactory = ServerCnxnFactory.createFactory(port, -1);
+        ZooKeeper zk = null;
+        try  {
+            serverCnxnFactory.startup(zks);
+            assertTrue(ClientBase.waitForServerUp(HOST_PORT, CONNECTION_TIMEOUT));
+
+            zk = ClientBase.createZKClient(HOST_PORT);
+            for (int i = 0; i < NODE_COUNT; i++) {
+                final String path = BASE_PATH + "-" + i;
+                zk.create(path, String.valueOf(i).getBytes(), Ids.OPEN_ACL_UNSAFE, CreateMode.PERSISTENT);
+            }
+
+            // takeSnapshot
+            zks.takeSnapshot(false, false, true);
+
+            // clean up
+            zk.close();
+            zks.shutdown();
+
+            // restart server and assert the data restored from snapshot
+            zks = new ZooKeeperServer(dataDir, logDir, 3000);
+            ZooKeeperServer.setSerializeLastProcessedZxidEnabled(false);
+
+            serverCnxnFactory.startup(zks);
+            assertTrue(ClientBase.waitForServerUp(HOST_PORT, CONNECTION_TIMEOUT));
+
+            zk = ClientBase.createZKClient(HOST_PORT);
+            for (int i = 0; i < NODE_COUNT; i++) {
+                final String path = BASE_PATH + "-" + i;
+                final String expectedData = String.valueOf(i);
+                assertArrayEquals(expectedData.getBytes(), zk.getData(path, null, null));
+            }
+            assertEquals(NODE_COUNT + 3, zk.getAllChildrenNumber("/"));
+        } finally {
+            if (zk != null) {
+                zk.close();
+            }
+
+            zks.shutdown();
+            serverCnxnFactory.shutdown();
+        }
+    }
+}