/**
 * Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
/**
 * 
 */
package org.evosuite.assertion;

import java.lang.reflect.Array;
import java.util.Arrays;

import org.evosuite.testcase.TestCase;
import org.evosuite.testcase.execution.CodeUnderTestException;
import org.evosuite.testcase.execution.Scope;

/**
 * @author Gordon Fraser
 * 
 */
public class ArrayEqualsAssertion extends Assertion {

	private static final long serialVersionUID = -1868479914750970330L;

	/** {@inheritDoc} */
	@Override
	public Assertion copy(TestCase newTestCase, int offset) {
		ArrayEqualsAssertion s = new ArrayEqualsAssertion();
		s.source = source.copy(newTestCase, offset);
		s.value = value;
		s.comment = comment;
		return s;
	}

	/** {@inheritDoc} */
	@Override
	public String getCode() {
		return "assertArrayEquals(" + value + ", " + source.getName() + ");";
	}

	private Object[] getArray(Object val) {
		int arrlength = Array.getLength(val);
		Object[] outputArray = new Object[arrlength];
		for (int i = 0; i < arrlength; ++i) {
			outputArray[i] = Array.get(val, i);
		}
		return outputArray;
	}

	/* (non-Javadoc)
	 * @see org.evosuite.assertion.Assertion#evaluate(org.evosuite.testcase.Scope)
	 */
	@Override
	public boolean evaluate(Scope scope) {
		try {
			if (source.getObject(scope) == null)
				return value == null;
			else
				return Arrays.equals(getArray(source.getObject(scope)), (Object[]) value);
		} catch (CodeUnderTestException e) {
			throw new UnsupportedOperationException();
		}
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Assertion other = (Assertion) obj;
		if (source == null) {
			if (other.source != null)
				return false;
		} else if (!source.equals(other.source))
			return false;
		if (value == null) {
			if (other.value != null)
				return false;
		} else if (!Arrays.equals((Object[])value, (Object[])other.value))
			return false;
		return true;
	}
	
	/** {@inheritDoc} */
	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((source == null) ? 0 : source.hashCode());
		result = prime * result + ((value == null) ? 0 : Arrays.hashCode((Object[])value));
		return result;
	}

	
	
}