/*
 * Copyright (c) 2011-2016 NTT DATA Corporation
 *
 * 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.
 */

package jp.terasoluna.fw.batch.executor;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;

import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;
import org.springframework.context.ApplicationContext;
import org.springframework.test.util.ReflectionTestUtils;

@SuppressWarnings("deprecation")
public class ThreadGroupApplicationContextHolderTest {

    private ApplicationContext ctx = Mockito.mock(ApplicationContext.class);

    /**
     * pre-process
     * @throws Exception
     */
    @Before
    public void setUp() throws Exception {
        // いったんクリア
        Map<?, ?> tga = (Map<?, ?>) ReflectionTestUtils.getField(
                ThreadGroupApplicationContextHolder.class, "tga");
        tga.clear();
    }

    /**
     * testThreadGroupApplicationContextHolder001
     * @throws Exception
     */
    @Test
    public void testThreadGroupApplicationContextHolder001() throws Exception {
        ThreadGroupApplicationContextHolder holder = new ThreadGroupApplicationContextHolder();
        assertNotNull(holder);
    }

    /**
     * testGetThreadGroupApplicationContext001
     * @throws Exception
     */
    @Test
    public void testGetThreadGroupApplicationContext001() throws Exception {
        
        final AtomicBoolean complete = new AtomicBoolean(false);
        
        Thread th = new Thread(new Runnable() {
            public void run() {
                ThreadGroupApplicationContextHolder.setApplicationContext(ctx);
                ApplicationContext result = 
                        ThreadGroupApplicationContextHolder.getThreadGroupApplicationContext(getThreadGroup());
                complete.set(ctx == result);
            }
        });
        th.start();
        th.join();
        assertNull(ThreadGroupApplicationContextHolder
                .getThreadGroupApplicationContext(getThreadGroup()));
        assertTrue(complete.get());
    }

    /**
     * testSetAndGetApplicationContext001
     */
    @Test
    public void testSetAndGetApplicationContext001() {
        ThreadGroupApplicationContextHolder.setApplicationContext(ctx);
        assertEquals(ctx, ThreadGroupApplicationContextHolder
                .getCurrentThreadGroupApplicationContext());
    }

    /**
     * testSetAndGetApplicationContext002
     */
    @Test
    public void testSetAndGetApplicationContext002() {
        ThreadGroupApplicationContextHolder.setApplicationContext(null);
        assertNull(ThreadGroupApplicationContextHolder
                .getCurrentThreadGroupApplicationContext());
    }

    /**
     * testRemoveApplicationContext001
     */
    @Test
    public void testRemoveApplicationContext001() {
        ThreadGroupApplicationContextHolder.setApplicationContext(ctx);
        assertEquals(ctx, ThreadGroupApplicationContextHolder
                .getCurrentThreadGroupApplicationContext());
        ThreadGroupApplicationContextHolder.removeApplicationContext();
        assertNull(ThreadGroupApplicationContextHolder
                .getCurrentThreadGroupApplicationContext());
    }

    private ThreadGroup getThreadGroup() {
        return Thread.currentThread().getThreadGroup();
    }
}