#2307 - ENH: Add DatabaseFactory.disableShutdownHook() ... [ alias for ShutdownManager.deregisterShutdownHook() ]

ebean-core/src/test/java/io/ebeaninternal/server/lib/ShutdownManagerTest.java

@@ -2,12 +2,60 @@ package io.ebeaninternal.server.lib;
 
 import io.ebean.BaseTestCase;
 import io.ebean.DB;
+import io.ebean.Database;
+import io.ebean.DatabaseFactory;
 import io.ebean.event.ShutdownManager;
 import org.junit.Ignore;
 import org.junit.Test;
 
 public class ShutdownManagerTest extends BaseTestCase {
 
+  /**
+   * Run this test manually. Most typical when we want the application code to control shutdown.
+   */
+  @Ignore
+  @Test
+  public void test_disableShutdownHook_shutdownManually() {
+    // disable hook to make sure app code controls when shutdown is executed
+    DatabaseFactory.disableShutdownHook();
+    DB.getDefault();
+
+    System.out.println("shutdown manually ... ");
+    // application code explicitly calls shutdown()
+    DatabaseFactory.shutdown();
+  }
+
+  /**
+   * Run this test manually.
+   */
+  @Ignore
+  @Test
+  public void test_shutdownHook() {
+    DB.getDefault(); // shutdown fired via shutdown hook, default behaviour
+  }
+
+  /**
+   * Run this test manually.
+   */
+  @Ignore
+  @Test
+  public void test_disableShutdownHook() {
+    DB.getDefault();
+    DatabaseFactory.disableShutdownHook(); // no shutdown is run here (not great, don't do this)
+  }
+
+  /**
+   * Run this test manually.
+   */
+  @Ignore
+  @Test
+  public void test_shutdownManually() {
+    DB.getDefault();
+    System.out.println("shutdown manually ... ");
+    // note this removes the shutdown hook, only "useful" if it runs BEFORE a JVM shutdown is invoked (hook invoked)
+    DatabaseFactory.shutdown();
+  }
+
   /**
    * Run this test manually.
    */