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Java example source code file (FlagOpTest.java)
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The FlagOpTest.java Java example source code
/*
* 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.Assert;
import org.testng.annotations.Test;
import java.util.ArrayList;
import java.util.EnumSet;
import java.util.List;
import java.util.function.Supplier;
import static java.util.stream.LambdaTestHelpers.countTo;
@Test
public class FlagOpTest extends OpTestCase {
@Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class)
public void testFlagsPassThrough(String name, TestData<Integer, Stream data) {
@SuppressWarnings({"unchecked", "rawtypes"})
TestFlagPassThroughOp<Integer>[] ops = new TestFlagPassThroughOp[3];
ops[0] = new TestFlagPassThroughOp<>();
ops[1] = new TestFlagPassThroughOp<>();
ops[2] = new TestFlagPassThroughOp<>();
ops[0].set(null, ops[1]);
ops[1].set(ops[0], ops[2]);
ops[2].set(ops[1], null);
withData(data).ops(ops).exercise();
}
static class TestFlagPassThroughOp<T> extends FlagDeclaringOp {
TestFlagPassThroughOp<T> upstream;
TestFlagPassThroughOp<T> downstream;
TestFlagPassThroughOp() {
super(0);
}
void set(TestFlagPassThroughOp<T> upstream, TestFlagPassThroughOp downstream) {
this.upstream = upstream;
this.downstream = downstream;
}
int wrapFlags;
@Override
@SuppressWarnings({"unchecked", "rawtypes"})
public Sink<T> opWrapSink(int flags, boolean parallel, Sink sink) {
this.wrapFlags = flags;
if (downstream != null) {
assertTrue(flags == downstream.wrapFlags);
}
return sink;
}
}
public void testFlagsClearAllSet() {
int clearAllFlags = 0;
for (StreamOpFlag f : EnumSet.allOf(StreamOpFlag.class)) {
if (f.isStreamFlag()) {
clearAllFlags |= f.clear();
}
}
EnumSet<StreamOpFlag> known = EnumSet.noneOf(StreamOpFlag.class);
EnumSet<StreamOpFlag> notKnown = StreamOpFlagTestHelper.allStreamFlags();
List<FlagDeclaringOp ops = new ArrayList<>();
ops.add(new FlagDeclaringOp<>(clearAllFlags));
for (StreamOpFlag f : StreamOpFlagTestHelper.allStreamFlags()) {
if (f.canSet(StreamOpFlag.Type.OP)) {
ops.add(new TestFlagExpectedOp<>(f.set(),
known.clone(),
EnumSet.noneOf(StreamOpFlag.class),
notKnown.clone()));
known.add(f);
notKnown.remove(f);
}
}
ops.add(new TestFlagExpectedOp<>(0,
known.clone(),
EnumSet.noneOf(StreamOpFlag.class),
notKnown.clone()));
TestData<Integer, Stream data = TestData.Factory.ofArray("Array", countTo(10).toArray(new Integer[0]));
@SuppressWarnings("rawtypes")
FlagDeclaringOp[] opsArray = ops.toArray(new FlagDeclaringOp[ops.size()]);
withData(data).ops(opsArray).
without(StreamTestScenario.PAR_STREAM_TO_ARRAY_CLEAR_SIZED).
exercise();
}
public void testFlagsSetAllClear() {
EnumSet<StreamOpFlag> known = StreamOpFlagTestHelper.allStreamFlags();
int setAllFlags = 0;
for (StreamOpFlag f : EnumSet.allOf(StreamOpFlag.class)) {
if (f.isStreamFlag()) {
if (f.canSet(StreamOpFlag.Type.OP)) {
setAllFlags |= f.set();
} else {
known.remove(f);
}
}
}
EnumSet<StreamOpFlag> notKnown = EnumSet.noneOf(StreamOpFlag.class);
List<FlagDeclaringOp ops = new ArrayList<>();
ops.add(new FlagDeclaringOp<>(setAllFlags));
for (StreamOpFlag f : StreamOpFlagTestHelper.allStreamFlags()) {
ops.add(new TestFlagExpectedOp<>(f.clear(),
known.clone(),
EnumSet.noneOf(StreamOpFlag.class),
notKnown.clone()));
known.remove(f);
notKnown.add(f);
}
ops.add(new TestFlagExpectedOp<>(0,
known.clone(),
EnumSet.noneOf(StreamOpFlag.class),
notKnown.clone()));
TestData<Integer, Stream data = TestData.Factory.ofArray("Array", countTo(10).toArray(new Integer[0]));
@SuppressWarnings("rawtypes")
FlagDeclaringOp[] opsArray = ops.toArray(new FlagDeclaringOp[ops.size()]);
withData(data).ops(opsArray).
without(StreamTestScenario.PAR_STREAM_TO_ARRAY_CLEAR_SIZED).
exercise();
}
public void testFlagsParallelCollect() {
testFlagsSetSequence(CollectorOps::collector);
}
private void testFlagsSetSequence(Supplier<StatefulTestOp cf) {
EnumSet<StreamOpFlag> known = EnumSet.of(StreamOpFlag.ORDERED, StreamOpFlag.SIZED);
EnumSet<StreamOpFlag> preserve = EnumSet.of(StreamOpFlag.DISTINCT, StreamOpFlag.SORTED);
List<IntermediateTestOp ops = new ArrayList<>();
for (StreamOpFlag f : EnumSet.of(StreamOpFlag.DISTINCT, StreamOpFlag.SORTED)) {
ops.add(cf.get());
ops.add(new TestFlagExpectedOp<>(f.set(),
known.clone(),
preserve.clone(),
EnumSet.noneOf(StreamOpFlag.class)));
known.add(f);
preserve.remove(f);
}
ops.add(cf.get());
ops.add(new TestFlagExpectedOp<>(0,
known.clone(),
preserve.clone(),
EnumSet.noneOf(StreamOpFlag.class)));
TestData<Integer, Stream data = TestData.Factory.ofArray("Array", countTo(10).toArray(new Integer[0]));
@SuppressWarnings("rawtypes")
IntermediateTestOp[] opsArray = ops.toArray(new IntermediateTestOp[ops.size()]);
withData(data).ops(opsArray).
without(StreamTestScenario.PAR_STREAM_TO_ARRAY_CLEAR_SIZED).
exercise();
}
public void testFlagsClearParallelCollect() {
testFlagsClearSequence(CollectorOps::collector);
}
protected void testFlagsClearSequence(Supplier<StatefulTestOp cf) {
EnumSet<StreamOpFlag> known = EnumSet.of(StreamOpFlag.ORDERED, StreamOpFlag.SIZED);
EnumSet<StreamOpFlag> preserve = EnumSet.of(StreamOpFlag.DISTINCT, StreamOpFlag.SORTED);
EnumSet<StreamOpFlag> notKnown = EnumSet.noneOf(StreamOpFlag.class);
List<IntermediateTestOp ops = new ArrayList<>();
for (StreamOpFlag f : EnumSet.of(StreamOpFlag.ORDERED, StreamOpFlag.DISTINCT, StreamOpFlag.SORTED)) {
ops.add(cf.get());
ops.add(new TestFlagExpectedOp<>(f.clear(),
known.clone(),
preserve.clone(),
notKnown.clone()));
known.remove(f);
preserve.remove(f);
notKnown.add(f);
}
ops.add(cf.get());
ops.add(new TestFlagExpectedOp<>(0,
known.clone(),
preserve.clone(),
notKnown.clone()));
TestData<Integer, Stream data = TestData.Factory.ofArray("Array", countTo(10).toArray(new Integer[0]));
@SuppressWarnings("rawtypes")
IntermediateTestOp[] opsArray = ops.toArray(new IntermediateTestOp[ops.size()]);
withData(data).ops(opsArray).
without(StreamTestScenario.PAR_STREAM_TO_ARRAY_CLEAR_SIZED).
exercise();
}
public void testFlagsSizedOrderedParallelCollect() {
EnumSet<StreamOpFlag> parKnown = EnumSet.of(StreamOpFlag.SIZED);
EnumSet<StreamOpFlag> serKnown = parKnown.clone();
List<IntermediateTestOp ops = new ArrayList<>();
for (StreamOpFlag f : parKnown) {
ops.add(CollectorOps.collector());
ops.add(new ParSerTestFlagExpectedOp<>(f.clear(),
parKnown,
serKnown));
serKnown.remove(f);
}
ops.add(CollectorOps.collector());
ops.add(new ParSerTestFlagExpectedOp<>(0,
parKnown,
EnumSet.noneOf(StreamOpFlag.class)));
TestData<Integer, Stream data = TestData.Factory.ofArray("Array", countTo(10).toArray(new Integer[0]));
@SuppressWarnings("rawtypes")
IntermediateTestOp[] opsArray = ops.toArray(new IntermediateTestOp[ops.size()]);
withData(data).ops(opsArray).exercise();
}
static class ParSerTestFlagExpectedOp<T> extends FlagDeclaringOp {
final EnumSet<StreamOpFlag> parKnown;
final EnumSet<StreamOpFlag> serKnown;
ParSerTestFlagExpectedOp(int flags, EnumSet<StreamOpFlag> known, EnumSet serKnown) {
super(flags);
this.parKnown = known;
this.serKnown = serKnown;
}
@Override
@SuppressWarnings({"unchecked", "rawtypes"})
public Sink<T> opWrapSink(int flags, boolean parallel, Sink upstream) {
assertFlags(flags, parallel);
return upstream;
}
protected void assertFlags(int flags, boolean parallel) {
if (parallel) {
for (StreamOpFlag f : parKnown) {
Assert.assertTrue(f.isKnown(flags), String.format("Flag %s is not known, but should be known.", f.toString()));
}
} else {
for (StreamOpFlag f : serKnown) {
Assert.assertTrue(f.isKnown(flags), String.format("Flag %s is not known, but should be known.", f.toString()));
}
}
}
}
}
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