/**
* 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.strategy;
import org.evosuite.Properties;
import org.evosuite.rmi.ClientServices;
import org.evosuite.statistics.RuntimeVariable;
import org.evosuite.testcase.execution.CodeUnderTestException;
import org.evosuite.testcase.execution.ExecutionResult;
import org.evosuite.testcase.factories.RandomLengthTestFactory;
import org.evosuite.testcase.execution.TestCaseExecutor;
import org.evosuite.testcase.execution.UncompilableCodeException;
import org.evosuite.testcase.TestChromosome;
import org.evosuite.testsuite.TestSuiteChromosome;
import org.evosuite.utils.LoggingUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This strategy consists of generating random tests.
* The property NUM_RANDOM_TESTS is set on the command line
*
* @author gordon
*
*/
public class FixedNumRandomTestStrategy extends TestGenerationStrategy {
private final static Logger logger = LoggerFactory.getLogger(FixedNumRandomTestStrategy.class);
@Override
public TestSuiteChromosome generateTests() {
LoggingUtils.getEvoLogger().info("* Generating fixed number of random tests");
RandomLengthTestFactory factory = new org.evosuite.testcase.factories.RandomLengthTestFactory();
TestSuiteChromosome suite = new TestSuiteChromosome();
if(!canGenerateTestsForSUT()) {
LoggingUtils.getEvoLogger().info("* Found no testable methods in the target class "
+ Properties.TARGET_CLASS);
ClientServices.getInstance().getClientNode().trackOutputVariable(RuntimeVariable.Total_Goals, 0);
return suite;
}
for (int i = 0; i < Properties.NUM_RANDOM_TESTS; i++) {
logger.info("Current test: " + i + "/" + Properties.NUM_RANDOM_TESTS);
TestChromosome test = factory.getChromosome();
ExecutionResult result = TestCaseExecutor.runTest(test.getTestCase());
Integer pos = result.getFirstPositionOfThrownException();
if (pos != null) {
if (result.getExceptionThrownAtPosition(pos) instanceof CodeUnderTestException
|| result.getExceptionThrownAtPosition(pos) instanceof UncompilableCodeException
|| result.getExceptionThrownAtPosition(pos) instanceof TestCaseExecutor.TimeoutExceeded) {
// Filter invalid tests
continue;
} else {
// Remove anything that follows an exception
test.getTestCase().chop(pos + 1);
}
test.setChanged(true);
} else {
test.setLastExecutionResult(result);
}
suite.addTest(test);
}
// Search is finished, send statistics
sendExecutionStatistics();
return suite;
}
}