TestHelper.java

TestHelper.java

package org.rjung.tools.testing;

import java.math.BigInteger;
import java.security.SecureRandom;

public class TestHelper {

    private static final int DEFAULT_STRING_LENGTH = 8;
    private static final int DEFAULT_MAX_INT = 255;
    private static SecureRandom random;

    public static String getRandomString() {
        return getRandomString(DEFAULT_STRING_LENGTH);
    }

    public static String getRandomString(int length) {
        return new BigInteger(length * 5, getRandom()).toString(32);
    }

    public static int getRandomInt() {
        return getRandomInt(DEFAULT_MAX_INT);
    }

    public static int getRandomInt(int max) {
        return getRandomInt(0, max);
    }

    public static int getRandomInt(int min, int max) {
        return getRandom().nextInt((max - min) + 1) + min;
    }

    private static SecureRandom getRandom() {
        if (random == null) {
            random = new SecureRandom();
        }
        return random;
    }
}