/*
 * 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.Assert.assertEquals;
import static org.junit.Assert.assertThrows;

import java.util.Optional;
import org.junit.Test;

public class YangVersionTest {
    @Test
    public void testGetReference() {
        assertEquals("RFC6020", YangVersion.VERSION_1.getReference());
        assertEquals("RFC7950", YangVersion.VERSION_1_1.getReference());
    }

    @Test
    public void testParse() {
        assertEquals(Optional.empty(), YangVersion.parse(""));
        assertEquals(Optional.empty(), YangVersion.parse("1."));
        assertEquals(Optional.of(YangVersion.VERSION_1), YangVersion.parse("1"));
        assertEquals(Optional.of(YangVersion.VERSION_1_1), YangVersion.parse("1.1"));
    }

    @Test
    public void testParseNull() {
        assertThrows(NullPointerException.class, () -> YangVersion.parse(null));
    }

    @Test
    public void testToString() {
        assertEquals("1", YangVersion.VERSION_1.toString());
        assertEquals("1.1", YangVersion.VERSION_1_1.toString());
    }
}