private TestSuite createDescendingSuite(SortedMultisetTestSuiteBuilder<E> parentBuilder) {
final TestMultisetGenerator<E> delegate =
(TestMultisetGenerator<E>) parentBuilder.getSubjectGenerator();
Set<Feature<?>> features = new HashSet<Feature<?>>();
features.add(NoRecurse.DESCENDING);
features.addAll(parentBuilder.getFeatures());
if (!features.remove(SERIALIZABLE_INCLUDING_VIEWS)) {
features.remove(SERIALIZABLE);
}
return SortedMultisetTestSuiteBuilder.using(
new ForwardingTestMultisetGenerator<E>(delegate) {
@Override
public SortedMultiset<E> create(Object... entries) {
return ((SortedMultiset<E>) super.create(entries)).descendingMultiset();
}
@Override
public Iterable<E> order(List<E> insertionOrder) {
return ImmutableList.copyOf(super.order(insertionOrder)).reverse();
}
})
.named(parentBuilder.getName() + " descending")
.withFeatures(features)
.suppressing(parentBuilder.getSuppressedTests())
.createTestSuite();
}
List<TestSuite> createDerivedSuites(SortedMultisetTestSuiteBuilder<E> parentBuilder) {
List<TestSuite> derivedSuites = Lists.newArrayList();
if (!parentBuilder.getFeatures().contains(NoRecurse.DESCENDING)) {
derivedSuites.add(createDescendingSuite(parentBuilder));
}
if (parentBuilder.getFeatures().contains(SERIALIZABLE)) {
derivedSuites.add(createReserializedSuite(parentBuilder));
}
if (!parentBuilder.getFeatures().contains(NoRecurse.SUBMULTISET)) {
derivedSuites.add(createSubMultisetSuite(parentBuilder, Bound.NO_BOUND, Bound.EXCLUSIVE));
derivedSuites.add(createSubMultisetSuite(parentBuilder, Bound.NO_BOUND, Bound.INCLUSIVE));
derivedSuites.add(createSubMultisetSuite(parentBuilder, Bound.EXCLUSIVE, Bound.NO_BOUND));
derivedSuites.add(createSubMultisetSuite(parentBuilder, Bound.EXCLUSIVE, Bound.EXCLUSIVE));
derivedSuites.add(createSubMultisetSuite(parentBuilder, Bound.EXCLUSIVE, Bound.INCLUSIVE));
derivedSuites.add(createSubMultisetSuite(parentBuilder, Bound.INCLUSIVE, Bound.NO_BOUND));
derivedSuites.add(createSubMultisetSuite(parentBuilder, Bound.INCLUSIVE, Bound.EXCLUSIVE));
derivedSuites.add(createSubMultisetSuite(parentBuilder, Bound.INCLUSIVE, Bound.INCLUSIVE));
}
return derivedSuites;
}
private TestSuite createReserializedSuite(SortedMultisetTestSuiteBuilder<E> parentBuilder) {
final TestMultisetGenerator<E> delegate =
(TestMultisetGenerator<E>) parentBuilder.getSubjectGenerator();
Set<Feature<?>> features = new HashSet<Feature<?>>();
features.addAll(parentBuilder.getFeatures());
features.remove(SERIALIZABLE);
features.remove(SERIALIZABLE_INCLUDING_VIEWS);
return SortedMultisetTestSuiteBuilder.using(
new ForwardingTestMultisetGenerator<E>(delegate) {
@Override
public SortedMultiset<E> create(Object... entries) {
return SerializableTester.reserialize(((SortedMultiset<E>) super.create(entries)));
}
})
.named(parentBuilder.getName() + " reserialized")
.withFeatures(features)
.suppressing(parentBuilder.getSuppressedTests())
.createTestSuite();
}
private TestSuite createSubMultisetSuite(
SortedMultisetTestSuiteBuilder<E> parentBuilder, final Bound from, final Bound to) {
final TestMultisetGenerator<E> delegate =
(TestMultisetGenerator<E>) parentBuilder.getSubjectGenerator();
Set<Feature<?>> features = new HashSet<Feature<?>>();
features.add(NoRecurse.SUBMULTISET);
features.add(RESTRICTS_ELEMENTS);
features.addAll(parentBuilder.getFeatures());
if (!features.remove(SERIALIZABLE_INCLUDING_VIEWS)) {
features.remove(SERIALIZABLE);
}
SortedMultiset<E> emptyMultiset = (SortedMultiset<E>) delegate.create();
final Comparator<? super E> comparator = emptyMultiset.comparator();
SampleElements<E> samples = delegate.samples();
@SuppressWarnings("unchecked")
List<E> samplesList =
Arrays.asList(samples.e0(), samples.e1(), samples.e2(), samples.e3(), samples.e4());
Collections.sort(samplesList, comparator);
final E firstInclusive = samplesList.get(0);
final E lastInclusive = samplesList.get(samplesList.size() - 1);
return SortedMultisetTestSuiteBuilder.using(
new ForwardingTestMultisetGenerator<E>(delegate) {
@Override
public SortedMultiset<E> create(Object... entries) {
@SuppressWarnings("unchecked")
// we dangerously assume E is a string
List<E> extremeValues = (List) getExtremeValues();
@SuppressWarnings("unchecked")
// map generators must past entry objects
List<E> normalValues = (List) Arrays.asList(entries);
// prepare extreme values to be filtered out of view
Collections.sort(extremeValues, comparator);
E firstExclusive = extremeValues.get(1);
E lastExclusive = extremeValues.get(2);
if (from == Bound.NO_BOUND) {
extremeValues.remove(0);
extremeValues.remove(0);
}
if (to == Bound.NO_BOUND) {
extremeValues.remove(extremeValues.size() - 1);
extremeValues.remove(extremeValues.size() - 1);
}
// the regular values should be visible after filtering
List<E> allEntries = new ArrayList<E>();
allEntries.addAll(extremeValues);
allEntries.addAll(normalValues);
SortedMultiset<E> multiset =
(SortedMultiset<E>) delegate.create(allEntries.toArray());
// call the smallest subMap overload that filters out the extreme
// values
if (from == Bound.INCLUSIVE) {
multiset = multiset.tailMultiset(firstInclusive, BoundType.CLOSED);
} else if (from == Bound.EXCLUSIVE) {
multiset = multiset.tailMultiset(firstExclusive, BoundType.OPEN);
}
if (to == Bound.INCLUSIVE) {
multiset = multiset.headMultiset(lastInclusive, BoundType.CLOSED);
} else if (to == Bound.EXCLUSIVE) {
multiset = multiset.headMultiset(lastExclusive, BoundType.OPEN);
}
return multiset;
}
})
.named(parentBuilder.getName() + " subMultiset " + from + "-" + to)
.withFeatures(features)
.suppressing(parentBuilder.getSuppressedTests())
.createTestSuite();
}