| /* |
| * 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.openjpa.persistence.fetchgroups; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.openjpa.persistence.test.SingleEMTestCase; |
| |
| public class TestFetchGroupStacks extends SingleEMTestCase { |
| |
| @Override |
| public void setUp() { |
| setUp(FGManager.class, FGDepartment.class, FGEmployee.class, |
| FGAddress.class); |
| } |
| |
| public void testFetchGroupStacks() { |
| assertFetchGroups(); |
| em.getFetchPlan().addFetchGroup("foo"); |
| assertFetchGroups("foo"); |
| |
| { // add one new fetch group |
| em.pushFetchPlan().addFetchGroup("bar"); // push 1 |
| assertFetchGroups("foo", "bar"); |
| |
| { // add another one |
| em.pushFetchPlan().addFetchGroup("baz"); // push 2 |
| assertFetchGroups("foo", "bar", "baz"); |
| |
| { // add a fourth, plus one that's already there |
| em.pushFetchPlan().addFetchGroups("quux", "foo"); // push 3 |
| assertFetchGroups("foo", "bar", "baz", "quux"); |
| em.popFetchPlan(); // pop 3 |
| } |
| |
| // "foo" should still be there, since it was there before pop 3 |
| assertFetchGroups("foo", "bar", "baz"); |
| em.popFetchPlan(); // pop 2 |
| } |
| |
| assertFetchGroups("foo", "bar"); |
| em.popFetchPlan(); // pop 1 |
| } |
| assertFetchGroups("foo"); |
| |
| try { |
| em.popFetchPlan(); |
| fail("should be unbalanced"); |
| } catch (RuntimeException e) { |
| assertTrue(e.getMessage().contains("stack")); |
| } |
| } |
| |
| private void assertFetchGroups(String... fgs) { |
| Set s = new HashSet(); |
| if (fgs != null) |
| s.addAll(Arrays.asList(fgs)); |
| s.add("default"); |
| assertEquals(s, em.getFetchPlan().getFetchGroups()); |
| } |
| } |