Refactor move tests from ebean-core to ebean-test

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

@@ -0,0 +1,78 @@
+package io.ebeaninternal.server.lib;
+
+import io.ebean.BaseTestCase;
+import io.ebean.DB;
+import io.ebean.DatabaseFactory;
+import io.ebean.event.ShutdownManager;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+public class ShutdownManagerTest extends BaseTestCase {
+
+  /**
+   * Run this test manually. Most typical when we want the application code to control shutdown.
+   */
+  @Disabled
+  @Test
+  public void test_disableShutdownHook_shutdownManually() {
+    // disable hook to make sure app code controls when shutdown is executed
+    ShutdownManager.deregisterShutdownHook();
+    DB.getDefault();
+
+    System.out.println("shutdown manually ... ");
+    // application code explicitly calls shutdown()
+    ShutdownManager.shutdown();
+  }
+
+  /**
+   * Run this test manually.
+   */
+  @Disabled
+  @Test
+  public void test_shutdownHook() {
+    DB.getDefault(); // shutdown fired via shutdown hook, default behaviour
+  }
+
+  /**
+   * Run this test manually.
+   */
+  @Disabled
+  @Test
+  public void test_disableShutdownHook() {
+    DB.getDefault();
+    ShutdownManager.deregisterShutdownHook(); // no shutdown is run here (not great, don't do this)
+  }
+
+  /**
+   * Run this test manually.
+   */
+  @Disabled
+  @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.
+   */
+  @Disabled
+  @Test
+  public void test_deregisterShutdownHook() {
+    DB.getDefault();
+    ShutdownManager.deregisterShutdownHook();
+  }
+
+  /**
+   * Run this test manually.
+   */
+  @Disabled
+  @Test
+  public void test_noShutdownHook() {
+    System.setProperty("ebean.registerShutdownHook", "false");
+    DB.getDefault();
+  }
+
+}