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 *  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
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package org.apache.cayenne.util;

import org.apache.cayenne.access.types.ByteArrayTypeTest;
import org.junit.Test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;

/**
 */
public class IDUtilTest {

    @Test
    public void testPseudoUniqueByteSequence1() throws Exception {
        try {
            IDUtil.pseudoUniqueByteSequence(10);
            fail("must throw an exception on short sequences");
        } catch (IllegalArgumentException ex) {
            // expected
        }
    }

    @Test
    public void testPseudoUniqueByteSequence2() throws Exception {
        byte[] byte16 = IDUtil.pseudoUniqueByteSequence(16);
        assertNotNull(byte16);
        assertEquals(16, byte16.length);

        try {
            ByteArrayTypeTest.assertByteArraysEqual(
                byte16,
                IDUtil.pseudoUniqueByteSequence(16));
            fail("Same byte array..");
        } catch (Throwable th) {

        }
    }

    @Test
    public void testPseudoUniqueByteSequence3() throws Exception {
        byte[] byte17 = IDUtil.pseudoUniqueByteSequence(17);
        assertNotNull(byte17);
        assertEquals(17, byte17.length);

        byte[] byte123 = IDUtil.pseudoUniqueByteSequence(123);
        assertNotNull(byte123);
        assertEquals(123, byte123.length);
    }

}