/*
* Copyright 2011 Henry Coles
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and limitations under the License.
*/
package org.pitest.mutationtest.build;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.pitest.classinfo.ClassName;
import org.pitest.coverage.TestInfo;
import org.pitest.functional.F;
import org.pitest.functional.FCollection;
import org.pitest.functional.prelude.Prelude;
import org.pitest.mutationtest.DetectionStatus;
import org.pitest.mutationtest.MutationAnalyser;
import org.pitest.mutationtest.MutationResult;
import org.pitest.mutationtest.engine.MutationDetails;
public class MutationTestBuilder {
private final MutationSource mutationSource;
private final MutationAnalyser analyser;
private final WorkerFactory workerFactory;
private final MutationGrouper grouper;
public MutationTestBuilder(final WorkerFactory workerFactory,
final MutationAnalyser analyser, final MutationSource mutationSource,
final MutationGrouper grouper) {
this.mutationSource = mutationSource;
this.analyser = analyser;
this.workerFactory = workerFactory;
this.grouper = grouper;
}
public List<MutationAnalysisUnit> createMutationTestUnits(
final Collection<ClassName> codeClasses) {
final List<MutationAnalysisUnit> tus = new ArrayList<MutationAnalysisUnit>();
final List<MutationDetails> mutations = FCollection.flatMap(codeClasses,
classToMutations());
Collections.sort(mutations, comparator());
final Collection<MutationResult> analysedMutations = this.analyser
.analyse(mutations);
final Collection<MutationDetails> needAnalysis = FCollection.filter(
analysedMutations, statusNotKnown()).map(resultToDetails());
final List<MutationResult> analysed = FCollection.filter(analysedMutations,
Prelude.not(statusNotKnown()));
if (!analysed.isEmpty()) {
tus.add(makePreAnalysedUnit(analysed));
}
if (!needAnalysis.isEmpty()) {
for (final Collection<MutationDetails> ms : this.grouper.groupMutations(
codeClasses, needAnalysis)) {
tus.add(makeUnanalysedUnit(ms));
}
}
Collections.sort(tus, new AnalysisPriorityComparator());
return tus;
}
private Comparator<MutationDetails> comparator() {
return new Comparator<MutationDetails>() {
@Override
public int compare(final MutationDetails arg0, final MutationDetails arg1) {
return arg0.getId().compareTo(arg1.getId());
}
};
}
private F<ClassName, Iterable<MutationDetails>> classToMutations() {
return new F<ClassName, Iterable<MutationDetails>>() {
@Override
public Iterable<MutationDetails> apply(final ClassName a) {
return MutationTestBuilder.this.mutationSource.createMutations(a);
}
};
}
private MutationAnalysisUnit makePreAnalysedUnit(
final List<MutationResult> analysed) {
return new KnownStatusMutationTestUnit(analysed);
}
private MutationAnalysisUnit makeUnanalysedUnit(
final Collection<MutationDetails> needAnalysis) {
final Set<ClassName> uniqueTestClasses = new HashSet<ClassName>();
FCollection.flatMapTo(needAnalysis, mutationDetailsToTestClass(),
uniqueTestClasses);
return new MutationTestUnit(needAnalysis, uniqueTestClasses,
this.workerFactory);
}
private static F<MutationResult, MutationDetails> resultToDetails() {
return new F<MutationResult, MutationDetails>() {
@Override
public MutationDetails apply(final MutationResult a) {
return a.getDetails();
}
};
}
private static F<MutationResult, Boolean> statusNotKnown() {
return new F<MutationResult, Boolean>() {
@Override
public Boolean apply(final MutationResult a) {
return a.getStatus() == DetectionStatus.NOT_STARTED;
}
};
}
private static F<MutationDetails, Iterable<ClassName>> mutationDetailsToTestClass() {
return new F<MutationDetails, Iterable<ClassName>>() {
@Override
public Iterable<ClassName> apply(final MutationDetails a) {
return FCollection.map(a.getTestsInOrder(),
TestInfo.toDefiningClassName());
}
};
}
}