/*
 * $Id$
 *
 * Copyright (C) 2003-2015 JNode.org
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; If not, write to the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
package org.jnode.test.util;

import org.jnode.util.NumberUtils;
import org.junit.Test;

import static org.junit.Assert.assertEquals;


public class NumberUtilsTest {
    @Test
    public void testToString() throws Exception {
        String result = NumberUtils.toString(15.2365f, 2);
        assertEquals("15.23", result);
    }

    @Test
    public void testToStringNeg() throws Exception {
        String result = NumberUtils.toString(-15.2365f, 2);
        assertEquals("-15.23", result);
    }

    @Test
    public void testHexInt() {
        String result = NumberUtils.hex(255);
        assertEquals("000000ff", result.toLowerCase());
    }

    @Test
    public void testHexIntNeg() {
        String result = NumberUtils.hex(-1);
        assertEquals("ffffffff", result.toLowerCase());
    }

    @Test
    public void testHexIntMax() {
        String result = NumberUtils.hex(Integer.MAX_VALUE);
        assertEquals("7fffffff", result.toLowerCase());
    }

    @Test
    public void testHexLong() {
        String result = NumberUtils.hex(255L);
        assertEquals("00000000000000ff", result.toLowerCase());
    }

    @Test
    public void testHexLongNeg() {
        String result = NumberUtils.hex(-1L);
        assertEquals("ffffffffffffffff", result.toLowerCase());
    }

    @Test
    public void testHexLongMax() {
        String result = NumberUtils.hex(Long.MAX_VALUE);
        assertEquals("7fffffffffffffff", result.toLowerCase());
    }

    @Test
    public void testHexWithLength() {
        String result = NumberUtils.hex(255, 2);
        assertEquals("ff", result.toLowerCase());
    }

    @Test
    public void testToDecimalByte() {
        String result = NumberUtils.toDecimalByte(65536);
        assertEquals("65.53 kb", result.toLowerCase());
    }

    @Test
    public void testToBinaryByte() {
        String result = NumberUtils.toBinaryByte(65536);
        assertEquals("64.0 kb", result.toLowerCase());
    }

    @Test
    public void testGetSizeUnit() {
        assertEquals(1024, NumberUtils.getSizeUnit("1K").getMultiplier());
        assertEquals("K", NumberUtils.getSizeUnit("1K").getUnit());
    }

    @Test
    public void testGetSize() {
        assertEquals(1024, NumberUtils.getSize("1K"));
    }
}