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A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.util.stream;
import org.testng.annotations.DataProvider;
import java.util.*;
import java.util.Spliterators;
import java.util.function.Supplier;
/**
* StreamTestDataProvider
*
* @author Brian Goetz
*/
/** TestNG DataProvider for ref-valued streams */
public class StreamTestDataProvider {
private static final Integer[] to0 = new Integer[0];
private static final Integer[] to1 = new Integer[1];
private static final Integer[] to10 = new Integer[10];
private static final Integer[] to100 = new Integer[100];
private static final Integer[] to1000 = new Integer[1000];
private static final Integer[] reversed = new Integer[100];
private static final Integer[] ones = new Integer[100];
private static final Integer[] twice = new Integer[200];
private static final Integer[] pseudoRandom;
private static final Object[][] testData;
private static final Object[][] withNullTestData;
private static final Object[][] spliteratorTestData;
static {
Integer[][] arrays = {to0, to1, to10, to100, to1000};
for (Integer[] arr : arrays) {
for (int i = 0; i < arr.length; i++) {
arr[i] = i;
}
}
for (int i = 0; i < reversed.length; i++) {
reversed[i] = reversed.length - i;
}
for (int i = 0; i < ones.length; i++) {
ones[i] = 1;
}
System.arraycopy(to100, 0, twice, 0, to100.length);
System.arraycopy(to100, 0, twice, to100.length, to100.length);
pseudoRandom = new Integer[LambdaTestHelpers.LONG_STRING.length()];
for (int i = 0; i < LambdaTestHelpers.LONG_STRING.length(); i++) {
pseudoRandom[i] = (int) LambdaTestHelpers.LONG_STRING.charAt(i);
}
}
static final Object[][] arrays = {
{"empty", to0},
{"0..1", to1},
{"0..10", to10},
{"0..100", to100},
{"0..1000", to1000},
{"100x[1]", ones},
{"2x[0..100]", twice},
{"reverse 0..100", reversed},
{"pseudorandom", pseudoRandom}
};
static {
{
List list = new ArrayList<>();
for (Object[] data : arrays) {
final Object name = data[0];
final Integer[] ints = (Integer[])data[1];
final List 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,
() -> new ArrayList<>(intsAsList).stream()));
List 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 spinedBuffer = new SpinedBuffer<>();
intsAsList.forEach(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 consitently supported by
// all operations
{
List 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:" + i, content));
// not ORDERED, DISTINCT
list.add(collectionDataDescr("HashSet:" + i, new HashSet<>(Arrays.asList(content))));
}
withNullTestData = list.toArray(new Object[0][]);
}
{
List 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,
() -> Arrays.spliterator(ints)));
spliterators.add(splitDescr("arrays.s(array,o,l):" + name,
() -> Arrays.spliterator(ints, 0, ints.length/2)));
spliterators.add(splitDescr("SpinedBuffer.s():" + name,
() -> {
SpinedBuffer sb = new SpinedBuffer<>();
for (Integer i : ints)
sb.accept(i);
return sb.spliterator();
}));
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][]);
}
}
static Object[] arrayDataDescr(String description, T[] data) {
return new Object[] { description, TestData.Factory.ofArray(description, data)};
}
static Object[] streamDataDescr(String description, Supplier> supplier) {
return new Object[] { description, TestData.Factory.ofSupplier(description, supplier)};
}
static Object[] collectionDataDescr(String description, Collection data) {
return new Object[] { description, TestData.Factory.ofCollection(description, data)};
}
static Object[] sbDataDescr(String description, SpinedBuffer data) {
return new Object[] { description, TestData.Factory.ofSpinedBuffer(description, data)};
}
static Object[] splitDescr(String description, Supplier> ss) {
return new Object[] { description, ss };
}
// Return an array of ( String name, StreamTestData )
@DataProvider(name = "StreamTestData")
public static Object[][] makeStreamTestData() {
return testData;
}
@DataProvider(name = "withNull:StreamTestData")
public static Object[][] makeStreamWithNullTestData() {
return withNullTestData;
}
// returns an array of (String name, Supplier>)
@DataProvider(name = "Spliterator")
public static Object[][] spliteratorProvider() {
return spliteratorTestData;
}
}
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