/**
 * 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.Properties;
import org.evosuite.assertion.AssertionGenerator;
import org.evosuite.assertion.ComparisonTraceEntry;
import org.evosuite.assertion.ComparisonTraceObserver;
import org.evosuite.assertion.InspectorTraceEntry;
import org.evosuite.assertion.InspectorTraceObserver;
import org.evosuite.assertion.NullTraceEntry;
import org.evosuite.assertion.NullTraceObserver;
import org.evosuite.assertion.PrimitiveFieldTraceEntry;
import org.evosuite.assertion.PrimitiveFieldTraceObserver;
import org.evosuite.assertion.PrimitiveTraceEntry;
import org.evosuite.assertion.PrimitiveTraceObserver;
import org.evosuite.assertion.SameTraceEntry;
import org.evosuite.assertion.SameTraceObserver;
import org.evosuite.ga.stoppingconditions.MaxStatementsStoppingCondition;
import org.evosuite.testcase.TestCase;
import org.evosuite.testcase.execution.ExecutionResult;
import org.evosuite.testcase.execution.TestCaseExecutor;

public class RegressionAssertionGenerator extends AssertionGenerator {

  private static PrimitiveTraceObserver primitiveObserver = new PrimitiveTraceObserver();
  private static ComparisonTraceObserver comparisonObserver = new ComparisonTraceObserver();
  private static SameTraceObserver sameObserver = new SameTraceObserver();
  private static InspectorTraceObserver inspectorObserver = new InspectorTraceObserver();
  private static PrimitiveFieldTraceObserver fieldObserver = new PrimitiveFieldTraceObserver();
  private static NullTraceObserver nullObserver = new NullTraceObserver();

  /**
   * Constant <code>observerClasses</code>
   */
  public static Class<?>[] observerClasses = {PrimitiveTraceEntry.class,
      ComparisonTraceEntry.class, SameTraceEntry.class,
      InspectorTraceEntry.class, PrimitiveFieldTraceEntry.class,
      NullTraceEntry.class};

  @Override
  public void addAssertions(TestCase test) {
    assert false : "Not implemented";
  }

  public RegressionAssertionGenerator() {
    super();
    TestCaseExecutor.getInstance().newObservers();
    TestCaseExecutor.getInstance().addObserver(primitiveObserver);
    TestCaseExecutor.getInstance().addObserver(comparisonObserver);
    TestCaseExecutor.getInstance().addObserver(sameObserver);
    if (!Properties.REGRESSION_DISABLE_SPECIAL_ASSERTIONS) {
      TestCaseExecutor.getInstance().addObserver(inspectorObserver);
    }
    TestCaseExecutor.getInstance().addObserver(fieldObserver);
    TestCaseExecutor.getInstance().addObserver(nullObserver);
  }

  /**
   * Execute a test case on a mutant
   *
   * @param test The test case that should be executed
   */
  @Override
  public ExecutionResult runTest(TestCase test) {
    ExecutionResult result; //new ExecutionResult(test, null);
    // resetObservers();
    comparisonObserver.clear();
    sameObserver.clear();
    primitiveObserver.clear();
    if (!Properties.REGRESSION_DISABLE_SPECIAL_ASSERTIONS) {
      inspectorObserver.clear();
    }
    fieldObserver.clear();
    nullObserver.clear();
    try {
      logger.debug("Executing test");
      // MutationObserver.activateMutation(mutant);
      result = TestCaseExecutor.getInstance().execute(test);
      // MutationObserver.deactivateMutation(mutant);

      int num = test.size();
      MaxStatementsStoppingCondition.statementsExecuted(num);

      result.setTrace(comparisonObserver.getTrace(), ComparisonTraceEntry.class);
      result.setTrace(sameObserver.getTrace(), SameTraceEntry.class);
      result.setTrace(primitiveObserver.getTrace(), PrimitiveTraceEntry.class);
      if (!Properties.REGRESSION_DISABLE_SPECIAL_ASSERTIONS) {
        result.setTrace(inspectorObserver.getTrace(), InspectorTraceEntry.class);
      }
      result.setTrace(fieldObserver.getTrace(), PrimitiveFieldTraceEntry.class);
      result.setTrace(nullObserver.getTrace(), NullTraceEntry.class);

    } catch (Exception e) {
      throw new Error(e);
    }

    return result;
  }
}