@Override
public boolean doSearch(
TestChromosome individual, LocalSearchObjective<TestChromosome> objective) {
logger.info("Test before local search: " + individual.getTestCase().toCode());
boolean improved = false;
// Only apply local search up to the point where an exception was thrown
// TODO: Check whether this conflicts with test expansion
int lastPosition = individual.size() - 1;
if (individual.getLastExecutionResult() != null && !individual.isChanged()) {
Integer lastPos = individual.getLastExecutionResult().getFirstPositionOfThrownException();
if (lastPos != null) lastPosition = lastPos.intValue();
}
TestCase test = individual.getTestCase();
// We count down to make the code work when lines are
// added during the search (see NullReferenceSearch).
for (int i = lastPosition; i >= 0; i--) {
if (LocalSearchBudget.getInstance().isFinished()) break;
if (objective.isDone()) {
break;
}
if (i >= individual.size()) {
logger.warn("Test size decreased unexpectedly during local search, aborting local search");
logger.warn(individual.getTestCase().toCode());
break;
}
final Class<?> targetClass = Properties.getTargetClassAndDontInitialise();
final Statement statement = test.getStatement(i);
if (!test.hasReferences(statement.getReturnValue())
&& !statement.getReturnClass().equals(targetClass)) {
logger.info(
"Return value of statement "
+ i
+ " is not referenced and not SUT, not doing local search");
continue;
}
StatementLocalSearch search = StatementLocalSearch.getLocalSearchFor(statement);
if (search != null) {
logger.info(
"Applying local search of type "
+ search.getClass()
+ " to statement "
+ statement
+ " / "
+ individual.getTestCase().getStatement(i));
if (search.doSearch(individual, i, (LocalSearchObjective<TestChromosome>) objective)) {
improved = true;
}
// i = s.getPosition();
logger.debug(
"Old position was: " + i + ", adjusting to: " + (i + search.getPositionDelta()));
i += search.getPositionDelta();
test = individual.getTestCase();
} else {
/*
* No statement local search has been produced for this
* statement. Skipping.
*/
continue;
}
}
LocalSearchBudget.getInstance().countLocalSearchOnTest();
// logger.warn("Test after local search: " +
// individual.getTestCase().toCode());
// Return true iif search was successful
return improved;
// TODO: Handle arrays in local search
// TODO: mutating an int might have an effect on array lengths
}
