libcore/math/src/test/java/org/apache/harmony/math/tests/java/math/BigIntegerToStringTest.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You 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.
 */
/**
 * @author Elena Semukhina
 * @version $Revision$
 */

package org.apache.harmony.math.tests.java.math;

import java.math.BigInteger;

import junit.framework.TestCase;

/**
 * Class:   java.math.BigInteger
 * Method: toString(int radix)
 */
public class BigIntegerToStringTest extends TestCase {
    /**
     * If 36 < radix < 2 it should be set to 10
     */
    public void testRadixOutOfRange() {
        String value = "442429234853876401";
        int radix = 10;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(45);
        assertTrue(result.equals(value));
    }

    /**
     * test negative number of radix 2
     */
    public void testRadix2Neg() {
        String value = "-101001100010010001001010101110000101010110001010010101010101010101010101010101010101010101010010101";
        int radix = 2;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test positive number of radix 2
     */
    public void testRadix2Pos() {
        String value = "101000011111000000110101010101010101010001001010101010101010010101010101010000100010010";
        int radix = 2;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test negative number of radix 10
     */
    public void testRadix10Neg() {
        String value = "-2489756308572364789878394872984";
        int radix = 16;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test positive number of radix 10
     */
    public void testRadix10Pos() {
        String value = "2387627892347567398736473476";
        int radix = 16;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test negative number of radix 16
     */
    public void testRadix16Neg() {
        String value = "-287628a883451b800865c67e8d7ff20";
        int radix = 16;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test positive number of radix 16
     */
    public void testRadix16Pos() {
        String value = "287628a883451b800865c67e8d7ff20";
        int radix = 16;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test negative number of radix 24
     */
    public void testRadix24Neg() {
        String value = "-287628a88gmn3451b8ijk00865c67e8d7ff20";
        int radix = 24;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test positive number of radix 24
     */
    public void testRadix24Pos() {
        String value = "287628a883451bg80ijhk0865c67e8d7ff20";
        int radix = 24;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test negative number of radix 24
     */
    public void testRadix36Neg() {
        String value = "-uhguweut98iu4h3478tq3985pq98yeiuth33485yq4aiuhalai485yiaehasdkr8tywi5uhslei8";
        int radix = 36;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

    /**
     * test positive number of radix 24
     */
    public void testRadix36Pos() {
        String value = "23895lt45y6vhgliuwhgi45y845htsuerhsi4586ysuerhtsio5y68peruhgsil4568ypeorihtse48y6";
        int radix = 36;
        BigInteger aNumber = new BigInteger(value, radix);
        String result = aNumber.toString(radix);
        assertTrue(result.equals(value));
    }

// ANDROID ADDED

    /**
     * @tests java.math.BigInteger#toString()
     */
    public void test_toString1() {

        String s = "0000000000";
        BigInteger bi = new BigInteger(s);
        String sBI = bi.toString();
        assertEquals("toString method returns incorrect value instead of " + s, sBI, "0");
    }

    /**
     * @tests java.math.BigInteger#toString()
     */
    public void test_toString2() {
        String s = "1234567890987654321";
        BigInteger bi = new BigInteger(s);
        String sBI = bi.toString();
        assertEquals("toString method returns incorrect value instead of " + s, sBI, s);
    }

    /**
     * @tests java.math.BigInteger#toString()
     */
    public void test_toString3() {
        String s = "-1234567890987654321";
        BigInteger bi = new BigInteger(s);
        String sBI = bi.toString();
        assertEquals("toString method returns incorrect value instead of " + s, sBI, s);
    }

    /**
     * @tests java.math.BigInteger#toString()
     */
    public void test_toString4() {
        String s = "12345678901234";
        long l = 12345678901234L;
        BigInteger bi = BigInteger.valueOf(l);
        String sBI = bi.toString();
        assertEquals("toString method returns incorrect value instead of " + s, sBI, s);
    }

    /**
     * @tests java.math.BigInteger#toString()
     */
    public void test_toString5() {
        String s = "-12345678901234";
        long l = -12345678901234L;
        BigInteger bi = BigInteger.valueOf(l);
        String sBI = bi.toString();
        assertEquals("toString method returns incorrect value instead of " + s, sBI, s);
    }

    /**
     * @tests java.math.BigInteger#toString()
     */
    public void test_toString() {
        byte aBytes[] = {
                12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91
        };
        String s = "247856948764430159964673417020251";
        BigInteger bi = new BigInteger(aBytes);
        String sBI = bi.toString();
        assertEquals("toString method returns incorrect value instead of " + s, sBI, s);
        byte aBytes_[] = {
                -12, 56, 100, -2, -76, 89, 45, 91, 3, -15, 35, 26, 3, 91
        };
        s = "-238920881723209930210060613844133";
        bi = new BigInteger(aBytes_);
        sBI = bi.toString();
        assertEquals("toString method returns incorrect value instead of " + s, sBI, s);
    }
}