/*
 * Copyright (c) 2017 Pantheon Technologies s.r.o. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.yangtools.yang.common;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertSame;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import org.junit.jupiter.api.Test;

public class EmptyTest {

    @Test
    public void testInstanceNotNull() {
        assertNotNull(Empty.value());
    }

    @Test
    public void testToString() {
        assertEquals("empty", Empty.value().toString());
    }

    @Test
    public void testSerialization() throws IOException, ClassNotFoundException {
        final ByteArrayOutputStream bos = new ByteArrayOutputStream();
        try (ObjectOutputStream oos = new ObjectOutputStream(bos)) {
            oos.writeObject(Empty.value());
        }

        final Object read;
        try (ObjectInputStream ois = new ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()))) {
            read = ois.readObject();
        }

        assertSame(Empty.value(), read);
    }
}