de.codecentric.boot.admin.event.ClientApplicationEventTest.java Source code

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Here is the source code for de.codecentric.boot.admin.event.ClientApplicationEventTest.java

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/*
 * Copyright 2014 the original author or authors.
 *
 * 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 de.codecentric.boot.admin.event;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.not;
import static org.junit.Assert.assertThat;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

import org.apache.commons.io.output.ByteArrayOutputStream;
import org.junit.Test;

import de.codecentric.boot.admin.model.Application;

public class ClientApplicationEventTest {

    @Test
    public void hashCode_equals() throws Exception {
        ClientApplicationEvent event1 = new ClientApplicationRegisteredEvent(Application.create("test").build());
        ClientApplicationEvent event2 = cloneBySerialization(event1);

        assertThat(event1.hashCode(), is(event2.hashCode()));
        assertThat(event1, is(event2));
    }

    @Test
    public void equals() throws Exception {
        ClientApplicationEvent event1 = new ClientApplicationRegisteredEvent(Application.create("test").build());
        ClientApplicationEvent event2 = new ClientApplicationDeregisteredEvent(Application.create("test").build());

        assertThat(event1, not(is(event2)));
    }

    @SuppressWarnings("unchecked")
    /**
     * yeah nasty but we need exact the same timestamp
     */
    private <T extends Serializable> T cloneBySerialization(T obj) throws IOException, ClassNotFoundException {
        try (ByteArrayOutputStream buf = new ByteArrayOutputStream()) {
            try (ObjectOutputStream oos = new ObjectOutputStream(buf)) {
                oos.writeObject(obj);
            }

            try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(buf.toByteArray()))) {
                return (T) ois.readObject();
            }
        }
    }

}