public void testEveryMapShape() {
assertCountSum(
StreamSupport.stream(countTo(1000))
.mapToInt(i -> i - 1)
.mapToObj(i -> i + 1)
.mapToLong(i -> i - 1)
.mapToObj(i -> i + 1)
.mapToDouble(i -> i - 1)
.mapToObj(i -> i + 1)
.mapToInt(i -> (int) (double) i)
.mapToLong(i -> i)
.mapToDouble(i -> i)
.mapToLong(i -> (long) i)
.mapToInt(i -> (int) i)
.mapToObj(i -> i),
1000,
StreamSupport.stream(countTo(1000)).mapToInt(i -> i).sum());
}
public void testMap() {
assertCountSum(StreamSupport.stream(countTo(0)).map(mId), 0, 0);
assertCountSum(StreamSupport.stream(countTo(10)).map(mId), 10, 55);
assertCountSum(StreamSupport.stream(countTo(10)).map(mZero), 10, 0);
assertCountSum(StreamSupport.stream(countTo(0)).map(mDoubler), 0, 0);
assertCountSum(StreamSupport.stream(countTo(10)).map(mDoubler), 10, 110);
assertCountSum(StreamSupport.stream(countTo(10)).map(mDoubler).map(mDoubler), 10, 220);
exerciseOps(countTo(0), s -> s.map(LambdaTestHelpers.identity()), countTo(0));
exerciseOps(countTo(1000), s -> s.map(LambdaTestHelpers.identity()), countTo(1000));
// @@@ Force cast to integer so output is Stream<Integer> rather an IntStream
// this just ensures that no warnings are logged about boxing
// when the result is compared with the output
exerciseOps(countTo(1000), s -> s.map(e -> (Integer) (1000 + e)), range(1001, 2000));
}
static {
{
List<Object[]> list = new ArrayList<>();
for (Object[] data : arrays) {
final Object name = data[0];
final Integer[] ints = (Integer[]) data[1];
final List<Integer> intsAsList = Arrays.asList(ints);
list.add(arrayDataDescr("array:" + name, ints));
list.add(collectionDataDescr("ArrayList.asList:" + name, intsAsList));
list.add(collectionDataDescr("ArrayList:" + name, new ArrayList<>(intsAsList)));
list.add(
streamDataDescr(
"DelegatingStream(ArrayList):" + name,
() ->
StreamSupport.stream(
new ArrayList<>(
intsAsList) /*, new ArrayList<>().spliterator().characteristics()*/)));
List<Integer> aList = new ArrayList<>(intsAsList);
if (LambdaTestMode.isNormalMode()) {
// Only include sub-lists for normal test execution mode
// This data is serialization-hostile since the state of the
// deserialized sub-list will be out of sync with the
// enclosing list.
list.add(
collectionDataDescr(
"ArrayList.Sublist:" + name,
(ints.length) <= 1 ? aList.subList(0, 0) : aList.subList(1, ints.length / 2)));
}
list.add(collectionDataDescr("LinkedList:" + name, new LinkedList<>(intsAsList)));
list.add(collectionDataDescr("HashSet:" + name, new HashSet<>(intsAsList)));
list.add(collectionDataDescr("LinkedHashSet:" + name, new LinkedHashSet<>(intsAsList)));
list.add(collectionDataDescr("TreeSet:" + name, new TreeSet<>(intsAsList)));
SpinedBuffer<Integer> spinedBuffer = new SpinedBuffer<>();
java8.lang.Iterables.forEach(intsAsList, spinedBuffer);
list.add(sbDataDescr("SpinedBuffer:" + name, spinedBuffer));
// @@@ Add more
}
testData = list.toArray(new Object[0][]);
}
// Simple combination of numbers and null values, probably excessive but may catch
// errors for initialization/termination/sequence
// @@@ This is separate from the other data for now until nulls are consistently supported by
// all operations
{
List<Object[]> list = new ArrayList<>();
int size = 5;
for (int i = 0; i < (1 << size) - 2; i++) {
Integer[] content = new Integer[size];
for (int e = 0; e < size; e++) {
content[e] = (i & (1 << e)) > 0 ? e + 1 : null;
}
// ORDERED
list.add(arrayDataDescr("array(with null):" + i, content));
// not ORDERED, DISTINCT
list.add(
collectionDataDescr("HashSet(with null):" + i, new HashSet<>(Arrays.asList(content))));
}
withNullTestData = list.toArray(new Object[0][]);
}
{
List<Object[]> spliterators = new ArrayList<>();
for (Object[] data : arrays) {
final Object name = data[0];
final Integer[] ints = (Integer[]) data[1];
spliterators.add(
splitDescr("Arrays.s(array):" + name, () -> java8.util.J8Arrays.spliterator(ints)));
spliterators.add(
splitDescr(
"arrays.s(array,o,l):" + name,
() -> java8.util.J8Arrays.spliterator(ints, 0, ints.length / 2)));
spliterators.add(
splitDescr(
"SpinedBuffer.s():" + name,
() -> {
SpinedBuffer<Integer> sb = new SpinedBuffer<>();
for (Integer i : ints) sb.accept(i);
return sb.getSpliterator();
}));
spliterators.add(
splitDescr(
"Iterators.s(Arrays.s(array).iterator(), size):" + name,
() -> Spliterators.spliterator(Arrays.asList(ints).iterator(), ints.length, 0)));
spliterators.add(
splitDescr(
"Iterators.s(Arrays.s(array).iterator()):" + name,
() -> Spliterators.spliteratorUnknownSize(Arrays.asList(ints).iterator(), 0)));
// @@@ Add map and collection spliterators when spliterator() is exposed on Collection or
// Iterable
}
spliteratorTestData = spliterators.toArray(new Object[0][]);
}
}
public Stream<Pair<String, Function<Command, Observable<Event>>>> parallelStream() {
return StreamSupport.stream(spliterator(), true);
}