/**
 * 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.regression;

import org.evosuite.ga.FitnessFunction;
import org.evosuite.ga.stoppingconditions.MaxStatementsStoppingCondition;
import org.evosuite.testcase.TestCase;
import org.evosuite.testcase.TestChromosome;
import org.evosuite.testcase.execution.ExecutionResult;
import org.evosuite.testcase.execution.TestCaseExecutor;

/**
 * @deprecated
 * @author Gordon Fraser
 */
public class RegressionTestFitnessFunction extends
    FitnessFunction<RegressionTestChromosome> {

  /**
   *
   */
  private static final long serialVersionUID = 1230123206788990137L;

  /* (non-Javadoc)
   * @see org.evosuite.ga.FitnessFunction#getFitness(org.evosuite.ga.Chromosome)
   */
  @Override
  public double getFitness(RegressionTestChromosome regressionTest) {
    // Measure something based on the two results!
    assert false : "Should not be reaching here...";
    return 0;
  }

  /**
   * Execute a test case
   *
   * @param testChromosome The test case to execute
   * @return Result of the execution
   */
  public ExecutionResult runTest(TestChromosome testChromosome) {
    if (testChromosome.getLastExecutionResult() != null && !testChromosome.isChanged()) {
      return testChromosome.getLastExecutionResult();
    }

    TestCase test = testChromosome.getTestCase();
    ExecutionResult result = new ExecutionResult(test, null);

    try {
      result = TestCaseExecutor.getInstance().execute(test);

      int num = test.size();
      if (!result.noThrownExceptions()) {
        num = result.getFirstPositionOfThrownException();
      }
      MaxStatementsStoppingCondition.statementsExecuted(num);
      // for(TestObserver observer : observers) {
      // observer.testResult(result);
      // }
    } catch (Exception e) {
      logger.error("TG: Exception caught: ", e);
      throw new RuntimeException(e);
    }

    return result;
  }

  /* (non-Javadoc)
   * @see org.evosuite.ga.FitnessFunction#isMaximizationFunction()
   */
  @Override
  public boolean isMaximizationFunction() {
    return false;
  }

}