/*
**********************************************************************
* Copyright (c) 2003, International Business Machines
* Corporation and others.  All Rights Reserved.
**********************************************************************
* Author: Alan Liu
* Created: March 8 2003
* Since: ICU 2.6
**********************************************************************
*/
package com.ibm.icu.dev.test.util;
import com.ibm.icu.dev.test.TestFmwk;
import com.ibm.icu.impl.Utility;

/**
 * @test
 * @summary Test of internal Utility class
 */
public class UtilityTest extends TestFmwk {

    public static void main(String[] args) throws Exception {
        new UtilityTest().run(args);
    }

    public void TestUnescape() {
        final String input =
            "Sch\\u00f6nes Auto: \\u20ac 11240.\\fPrivates Zeichen: \\U00102345\\e\\cC\\n \\x1b\\x{263a}";

        final String expect = 
            "Sch\u00F6nes Auto: \u20AC 11240.\u000CPrivates Zeichen: \uDBC8\uDF45\u001B\u0003\012 \u001B\u263A";

        String result = Utility.unescape(input);
        if (!result.equals(expect)) {
            errln("FAIL: Utility.unescape() returned " + result + ", exp. " + expect);
        }
    }
    
    public void TestCompareUnsigned()
    {
        int data[] = {0, 1, 0x8fffffff, -1, Integer.MAX_VALUE, 
                      Integer.MIN_VALUE, 2342423, -2342423};
        for (int i = 0; i < data.length; i ++) {
            for (int j = 0; j < data.length; j ++) {
                if (Utility.compareUnsigned(data[i], data[j]) 
                    != compareLongUnsigned(data[i], data[j])) {
                    errln("Fail: Unsigned comparison failed with " + data[i] 
                          + " " + data[i + 1]);
                }
            }
        }
    }
    
    private int compareLongUnsigned(int x, int y)
    {
        long x1 = x & 0xFFFFFFFFl;
        long y1 = y & 0xFFFFFFFFl;
        if (x1 < y1) {
            return -1;
        }
        else if (x1 > y1) {
            return 1;
        }
        return 0;
    }
}