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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.testcase.localsearch;

import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;

import org.evosuite.ga.Chromosome;
import org.evosuite.ga.metaheuristics.GeneticAlgorithm;
import org.evosuite.ga.metaheuristics.SearchListener;
import org.evosuite.testcase.TestCase;
import org.evosuite.testcase.TestChromosome;
import org.evosuite.testcase.execution.ExecutionResult;
import org.evosuite.testsuite.TestSuiteChromosome;

public class BranchCoverageMap implements SearchListener {

	public static BranchCoverageMap instance = null;
	
	private Map coveredTrueBranches;

	private Map coveredFalseBranches;

	private BranchCoverageMap() {
		
	}
	
	public static BranchCoverageMap getInstance() {
		if(instance == null)
			instance = new BranchCoverageMap();
		
		return instance;
	}
	
	public boolean isCoveredTrue(int branchId) {
		return coveredTrueBranches.containsKey(branchId);
	}

	public boolean isCoveredFalse(int branchId) {
		return coveredFalseBranches.containsKey(branchId);
	}
	
	public TestCase getTestCoveringTrue(int branchId) {
		return coveredTrueBranches.get(branchId);
	}

	public TestCase getTestCoveringFalse(int branchId) {
		return coveredFalseBranches.get(branchId);
	}
	
	public Set getCoveredTrueBranches() {
		return coveredTrueBranches.keySet();
	}

	public Set getCoveredFalseBranches() {
		return coveredFalseBranches.keySet();
	}

	@Override
	public void searchStarted(GeneticAlgorithm algorithm) {
		coveredTrueBranches  = new LinkedHashMap();
		coveredFalseBranches = new LinkedHashMap();		
	}

	@Override
	public void iteration(GeneticAlgorithm algorithm) {
		
	}

	@Override
	public void searchFinished(GeneticAlgorithm algorithm) {
		coveredTrueBranches  = null;
		coveredFalseBranches = null;
	}

	@Override
	public void fitnessEvaluation(Chromosome individual) {
		if(individual instanceof TestSuiteChromosome) {
			TestSuiteChromosome suite = (TestSuiteChromosome)individual;
			for(TestChromosome testChromosome : suite.getTestChromosomes()) {
				ExecutionResult lastResult = testChromosome.getLastExecutionResult();
				if(lastResult != null) {
					for(Integer branchId : lastResult.getTrace().getCoveredTrueBranches()) {
						if(!coveredTrueBranches.containsKey(branchId)) {
							coveredTrueBranches.put(branchId, testChromosome.getTestCase());
						}
					}
					for(Integer branchId : lastResult.getTrace().getCoveredFalseBranches()) {
						if(!coveredFalseBranches.containsKey(branchId)) {
							coveredFalseBranches.put(branchId, testChromosome.getTestCase());
						}
					}
				}
			}
		}
		
	}

	@Override
	public void modification(Chromosome individual) {
		// TODO Auto-generated method stub
		
	}

	
	
}