package org.codehaus.plexus.util;

/*
 * Copyright The Codehaus Foundation.
 *
 * 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.
 */

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;

import java.util.Iterator;

import org.junit.Test;

/**
 * Test Case for Os
 */
public class OsTest
{
    @Test
    public void testUndefinedFamily()
    {
        assertFalse( Os.isFamily( "bogus family" ) );
    }

    @Test
    public void testOs()
    {
        Iterator<String> iter = Os.getValidFamilies().iterator();
        String currentFamily = null;
        String notCurrentFamily = null;
        while ( iter.hasNext() && ( currentFamily == null || notCurrentFamily == null ) )
        {
            String fam = iter.next();
            if ( Os.isFamily( fam ) )
            {
                currentFamily = fam;
            }
            else
            {
                notCurrentFamily = fam;
            }
        }

        // make sure the OS_FAMILY is set right.
        assertEquals( currentFamily, Os.OS_FAMILY );

        // check the current family and one of the others
        assertTrue( Os.isOs( currentFamily, null, null, null ) );
        assertFalse( Os.isOs( notCurrentFamily, null, null, null ) );

        // check for junk
        assertFalse( Os.isOs( "junk", null, null, null ) );

        // check the current name
        assertTrue( Os.isOs( currentFamily, Os.OS_NAME, null, null ) );

        // check some other name
        assertFalse( Os.isOs( currentFamily, "myos", null, null ) );

        // check the arch
        assertTrue( Os.isOs( currentFamily, Os.OS_NAME, Os.OS_ARCH, null ) );
        assertFalse( Os.isOs( currentFamily, Os.OS_NAME, "myarch", null ) );

        // check the version
        assertTrue( Os.isOs( currentFamily, Os.OS_NAME, Os.OS_ARCH, Os.OS_VERSION ) );
        assertFalse( Os.isOs( currentFamily, Os.OS_NAME, Os.OS_ARCH, "myversion" ) );
    }

    @Test
    public void testValidList()
    {
        assertTrue( Os.isValidFamily( "dos" ) );

        assertFalse( Os.isValidFamily( "" ) );
        assertFalse( Os.isValidFamily( null ) );
        assertFalse( Os.isValidFamily( "something" ) );
    }
}