/**
* {@inheritDoc}
*
* <p>Execute all tests and count covered branches
*/
@Override
public double getFitness(AbstractTestSuiteChromosome<? extends ExecutableChromosome> suite) {
logger.trace("Calculating branch fitness");
double fitness = 0.0;
List<ExecutionResult> results = runTestSuite(suite);
Map<Integer, Double> trueDistance = new HashMap<Integer, Double>();
Map<Integer, Double> falseDistance = new HashMap<Integer, Double>();
Map<Integer, Integer> predicateCount = new HashMap<Integer, Integer>();
// Collect stats in the traces
boolean hasTimeoutOrTestException =
analyzeTraces(suite, results, predicateCount, trueDistance, falseDistance);
// Collect branch distances of covered branches
int numCoveredBranches = 0;
for (Integer key : predicateCount.keySet()) {
double df = 0.0;
double dt = 0.0;
int numExecuted = predicateCount.get(key);
if (removedBranchesT.contains(key)) numExecuted++;
if (removedBranchesF.contains(key)) numExecuted++;
if (trueDistance.containsKey(key)) {
dt = trueDistance.get(key);
}
if (falseDistance.containsKey(key)) {
df = falseDistance.get(key);
}
// If the branch predicate was only executed once, then add 1
if (numExecuted == 1) {
fitness += 1.0;
} else {
fitness += normalize(df) + normalize(dt);
}
if (falseDistance.containsKey(key) && (Double.compare(df, 0.0) == 0)) numCoveredBranches++;
if (trueDistance.containsKey(key) && (Double.compare(dt, 0.0) == 0)) numCoveredBranches++;
}
// +1 for every branch that was not executed
fitness += 2 * (totalBranches - predicateCount.size());
printStatusMessages(suite, numCoveredBranches, fitness);
// Calculate coverage
int coverage = numCoveredBranches;
coverage += removedBranchesF.size();
coverage += removedBranchesT.size();
if (totalGoals > 0) suite.setCoverage(this, (double) coverage / (double) totalGoals);
else suite.setCoverage(this, 1);
suite.setNumOfCoveredGoals(this, coverage);
suite.setNumOfNotCoveredGoals(this, totalGoals - coverage);
if (hasTimeoutOrTestException) {
logger.info("Test suite has timed out, setting fitness to max value " + (totalBranches * 2));
fitness = totalBranches * 2;
// suite.setCoverage(0.0);
}
updateIndividual(this, suite, fitness);
assert (coverage <= totalGoals) : "Covered " + coverage + " vs total goals " + totalGoals;
assert (fitness >= 0.0);
assert (fitness != 0.0 || coverage == totalGoals)
: "Fitness: " + fitness + ", " + "coverage: " + coverage + "/" + totalGoals;
assert (suite.getCoverage(this) <= 1.0) && (suite.getCoverage(this) >= 0.0)
: "Wrong coverage value " + suite.getCoverage(this);
return fitness;
}
