/*
 * Copyright IBM Corp. and others 2001
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at https://www.eclipse.org/legal/epl-2.0/
 * or the Apache License, Version 2.0 which accompanies this distribution and
 * is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following
 * Secondary Licenses when the conditions for such availability set
 * forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
 * General Public License, version 2 with the GNU Classpath
 * Exception [1] and GNU General Public License, version 2 with the
 * OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] https://openjdk.org/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 */
/*
 * Created on Jul 9, 2007
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package j9vm.test.hash;

public class ArrayHashCodeTest extends HashCodeTestParent {

	public ArrayHashCodeTest(int mode) {
		super(mode);
	}


	/**
	 * @param args
	 */
	public static void main(String[] args) {
		for (int i = 0; i < MODES.length; i++) {
			new ArrayHashCodeTest(MODES[i]).test();
		}
	}

	
	public void test() {
		/* test that an array's hash code remains stable during a GC */
		for (int len = 0; len < 16; len++) {
		
			Object[] arrays = {
					new boolean[len],
					new byte[len],
					new char[len],
					new short[len],
					new int[len],
					new float[len],
					new long[len],
					new double[len],
					new Object[len]
			};
			
			int[] hashCodes = new int[arrays.length];
			for (int i = 0; i < arrays.length; i++) {
				hashCodes[i] = arrays[i].hashCode();
			}
			
			gc();
			
			for (int i = 0; i < arrays.length; i++) {
				int newHashCode = arrays[i].hashCode();
				if (hashCodes[i] != newHashCode) {
					throw new Error("Hash code for " + arrays[i] + " changed: " + hashCodes[i] + " != " + newHashCode);
				}
			}
		}
	}
}
