package com.getperka.flatpack.util;
/*
* #%L
* FlatPack serialization code
* %%
* Copyright (C) 2012 - 2013 Perka Inc.
* %%
* Licensed 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.
* #L%
*/
import static org.junit.Assert.assertTrue;
import java.util.Collections;
import javax.inject.Inject;
import org.junit.Test;
import com.getperka.flatpack.FlatPackTest;
import com.getperka.flatpack.HasUuid;
import com.getperka.flatpack.Visitors;
import com.getperka.flatpack.codexes.EntityCodex;
import com.getperka.flatpack.domain.Employee;
import com.getperka.flatpack.domain.Manager;
import com.getperka.flatpack.ext.VisitorContext;
public class AcyclicVisitorTest extends FlatPackTest {
static class MyVisitor extends AcyclicVisitor {
boolean sawEmployee;
boolean sawManager;
@Override
protected <T extends HasUuid> void endVisitOnce(T entity, EntityCodex<T> codex,
VisitorContext<T> ctx) {
sawEmployee |= entity instanceof Employee;
sawManager |= entity instanceof Manager;
}
}
@Inject
Visitors visitors;
@Test
public void test() {
// Create a cyclic datastructure
Manager manager = makeManager();
Employee employee = makeEmployee();
manager.setEmployees(Collections.singletonList(employee));
employee.setManager(manager);
MyVisitor visitor = new MyVisitor();
visitors.visit(visitor, employee);
assertTrue(visitor.sawEmployee);
assertTrue(visitor.sawManager);
// Ensure the same behavior visiting the other
visitor = new MyVisitor();
visitors.visit(visitor, manager);
assertTrue(visitor.sawEmployee);
assertTrue(visitor.sawManager);
}
}