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/**
 * Copyright (C) 2010-2018 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 .
 */
package org.evosuite.assertion;

import java.util.HashSet;
import java.util.Set;

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

/**
 * Assertion on comparison value of two objects
 * 
 * @author Gordon Fraser
 */
public class CompareAssertion extends Assertion {

	private static final long serialVersionUID = 7415863202662602633L;

	protected VariableReference dest;

	/**
	 * 
	 * Getter for the field dest.
	 * 
	 * 
	 * @return a {@link org.evosuite.testcase.variable.VariableReference} object.
	 */
	public VariableReference getDest() {
		return dest;
	}

	/**
	 * 
	 * Setter for the field dest.
	 * 
	 * 
	 * @param dest
	 *            a {@link org.evosuite.testcase.variable.VariableReference} object.
	 */
	public void setDest(VariableReference dest) {
		this.dest = dest;
	}

	/**
	 * {@inheritDoc}
	 * 
	 * Create a copy of the compare assertion
	 */
	@Override
	public Assertion copy(TestCase newTestCase, int offset) {
		CompareAssertion s = new CompareAssertion();
		s.source = newTestCase.getStatement(source.getStPosition() + offset).getReturnValue();
		s.dest = newTestCase.getStatement(dest.getStPosition() + offset).getReturnValue();
		s.value = value;
		s.comment = comment;
		s.killedMutants.addAll(killedMutants);
		return s;
	}

	/**
	 * {@inheritDoc}
	 * 
	 * This method returns the Java Code
	 */
	@Override
	public String getCode() {
		if (source.getType().equals(Integer.class)) {
			if ((Integer) value == 0)
				return "assertTrue(" + source.getName() + " == " + dest.getName() + ");";
			else if ((Integer) value < 0)
				return "assertTrue(" + source.getName() + " < " + dest.getName() + ");";
			else
				return "assertTrue(" + source.getName() + " > " + dest.getName() + ");";

		} else {
			return "assertEquals(" + source.getName() + ".compareTo(" + dest.getName()
			        + "), " + value + ");";
		}
	}

	/**
	 * {@inheritDoc}
	 * 
	 * Determine if assertion holds in current scope
	 */
	@SuppressWarnings("unchecked")
	@Override
	public boolean evaluate(Scope scope) {
		try {
			Comparable