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/* |
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* Written by Doug Lea and Martin Buchholz with assistance from |
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* members of JCP JSR-166 Expert Group and released to the public |
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* domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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|
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import java.util.concurrent.atomic.AtomicInteger; |
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import java.util.concurrent.atomic.AtomicIntegerArray; |
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import java.util.concurrent.atomic.AtomicIntegerFieldUpdater; |
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import java.util.concurrent.atomic.AtomicLong; |
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import java.util.concurrent.atomic.AtomicLongArray; |
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import java.util.concurrent.atomic.AtomicLongFieldUpdater; |
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import java.util.concurrent.atomic.AtomicReference; |
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import java.util.concurrent.atomic.AtomicReferenceArray; |
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import java.util.concurrent.atomic.AtomicReferenceFieldUpdater; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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/** |
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* Tests of atomic class methods accepting lambdas introduced in JDK8. |
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*/ |
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public class Atomic8Test extends JSR166TestCase { |
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|
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public static void main(String[] args) { |
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main(suite(), args); |
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} |
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public static Test suite() { |
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return new TestSuite(Atomic8Test.class); |
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} |
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|
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static long addLong17(long x) { return x + 17; } |
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static int addInt17(int x) { return x + 17; } |
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static Integer addInteger17(Integer x) { |
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return x.intValue() + 17; |
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} |
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static Integer sumInteger(Integer x, Integer y) { |
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return x.intValue() + y.intValue(); |
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} |
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|
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volatile long aLongField; |
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volatile int anIntField; |
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volatile Integer anIntegerField; |
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|
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AtomicLongFieldUpdater<Atomic8Test> aLongFieldUpdater() { |
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return AtomicLongFieldUpdater.newUpdater |
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(Atomic8Test.class, "aLongField"); |
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} |
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|
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AtomicIntegerFieldUpdater<Atomic8Test> anIntFieldUpdater() { |
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return AtomicIntegerFieldUpdater.newUpdater |
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(Atomic8Test.class, "anIntField"); |
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} |
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|
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AtomicReferenceFieldUpdater<Atomic8Test,Integer> anIntegerFieldUpdater() { |
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return AtomicReferenceFieldUpdater.newUpdater |
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(Atomic8Test.class, Integer.class, "anIntegerField"); |
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} |
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|
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/** |
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* AtomicLong getAndUpdate returns previous value and updates |
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* result of supplied function |
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*/ |
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public void testLongGetAndUpdate() { |
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AtomicLong a = new AtomicLong(1L); |
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assertEquals(1L, a.getAndUpdate(Atomic8Test::addLong17)); |
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assertEquals(18L, a.getAndUpdate(Atomic8Test::addLong17)); |
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assertEquals(35L, a.get()); |
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} |
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|
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/** |
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* AtomicLong updateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testLongUpdateAndGet() { |
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AtomicLong a = new AtomicLong(1L); |
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assertEquals(18L, a.updateAndGet(Atomic8Test::addLong17)); |
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assertEquals(35L, a.updateAndGet(Atomic8Test::addLong17)); |
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} |
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|
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/** |
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* AtomicLong getAndAccumulate returns previous value and updates |
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* with supplied function. |
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*/ |
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public void testLongGetAndAccumulate() { |
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AtomicLong a = new AtomicLong(1L); |
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assertEquals(1L, a.getAndAccumulate(2L, Long::sum)); |
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assertEquals(3L, a.getAndAccumulate(3L, Long::sum)); |
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assertEquals(6L, a.get()); |
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} |
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|
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/** |
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* AtomicLong accumulateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testLongAccumulateAndGet() { |
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AtomicLong a = new AtomicLong(1L); |
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assertEquals(7L, a.accumulateAndGet(6L, Long::sum)); |
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assertEquals(10L, a.accumulateAndGet(3L, Long::sum)); |
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assertEquals(10L, a.get()); |
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} |
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|
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/** |
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* AtomicInteger getAndUpdate returns previous value and updates |
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* result of supplied function |
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*/ |
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public void testIntGetAndUpdate() { |
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AtomicInteger a = new AtomicInteger(1); |
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assertEquals(1, a.getAndUpdate(Atomic8Test::addInt17)); |
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assertEquals(18, a.getAndUpdate(Atomic8Test::addInt17)); |
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assertEquals(35, a.get()); |
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} |
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|
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/** |
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* AtomicInteger updateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testIntUpdateAndGet() { |
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AtomicInteger a = new AtomicInteger(1); |
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assertEquals(18, a.updateAndGet(Atomic8Test::addInt17)); |
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assertEquals(35, a.updateAndGet(Atomic8Test::addInt17)); |
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assertEquals(35, a.get()); |
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} |
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|
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/** |
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* AtomicInteger getAndAccumulate returns previous value and updates |
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* with supplied function. |
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*/ |
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public void testIntGetAndAccumulate() { |
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AtomicInteger a = new AtomicInteger(1); |
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assertEquals(1, a.getAndAccumulate(2, Integer::sum)); |
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assertEquals(3, a.getAndAccumulate(3, Integer::sum)); |
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assertEquals(6, a.get()); |
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} |
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|
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/** |
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* AtomicInteger accumulateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testIntAccumulateAndGet() { |
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AtomicInteger a = new AtomicInteger(1); |
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assertEquals(7, a.accumulateAndGet(6, Integer::sum)); |
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assertEquals(10, a.accumulateAndGet(3, Integer::sum)); |
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assertEquals(10, a.get()); |
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} |
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|
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/** |
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* AtomicReference getAndUpdate returns previous value and updates |
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* result of supplied function |
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*/ |
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public void testReferenceGetAndUpdate() { |
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AtomicReference<Integer> a = new AtomicReference<>(one); |
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assertEquals((Integer) 1, a.getAndUpdate(Atomic8Test::addInteger17)); |
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assertEquals((Integer) 18, a.getAndUpdate(Atomic8Test::addInteger17)); |
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assertEquals((Integer) 35, a.get()); |
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} |
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|
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/** |
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* AtomicReference updateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testReferenceUpdateAndGet() { |
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AtomicReference<Integer> a = new AtomicReference<>(one); |
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assertEquals((Integer) 18, a.updateAndGet(Atomic8Test::addInteger17)); |
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assertEquals((Integer) 35, a.updateAndGet(Atomic8Test::addInteger17)); |
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assertEquals((Integer) 35, a.get()); |
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} |
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|
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/** |
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* AtomicReference getAndAccumulate returns previous value and updates |
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* with supplied function. |
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*/ |
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public void testReferenceGetAndAccumulate() { |
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AtomicReference<Integer> a = new AtomicReference<>(one); |
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assertEquals((Integer) 1, a.getAndAccumulate(2, Atomic8Test::sumInteger)); |
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assertEquals((Integer) 3, a.getAndAccumulate(3, Atomic8Test::sumInteger)); |
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assertEquals((Integer) 6, a.get()); |
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} |
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|
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/** |
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* AtomicReference accumulateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testReferenceAccumulateAndGet() { |
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AtomicReference<Integer> a = new AtomicReference<>(one); |
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assertEquals((Integer) 7, a.accumulateAndGet(6, Atomic8Test::sumInteger)); |
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assertEquals((Integer) 10, a.accumulateAndGet(3, Atomic8Test::sumInteger)); |
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assertEquals((Integer) 10, a.get()); |
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} |
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|
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/** |
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* AtomicLongArray getAndUpdate returns previous value and updates |
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* result of supplied function |
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*/ |
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public void testLongArrayGetAndUpdate() { |
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AtomicLongArray a = new AtomicLongArray(1); |
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a.set(0, 1); |
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assertEquals(1L, a.getAndUpdate(0, Atomic8Test::addLong17)); |
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assertEquals(18L, a.getAndUpdate(0, Atomic8Test::addLong17)); |
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assertEquals(35L, a.get(0)); |
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} |
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|
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/** |
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* AtomicLongArray updateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testLongArrayUpdateAndGet() { |
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AtomicLongArray a = new AtomicLongArray(1); |
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a.set(0, 1); |
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assertEquals(18L, a.updateAndGet(0, Atomic8Test::addLong17)); |
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assertEquals(35L, a.updateAndGet(0, Atomic8Test::addLong17)); |
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assertEquals(35L, a.get(0)); |
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} |
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|
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/** |
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* AtomicLongArray getAndAccumulate returns previous value and updates |
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* with supplied function. |
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*/ |
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public void testLongArrayGetAndAccumulate() { |
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AtomicLongArray a = new AtomicLongArray(1); |
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a.set(0, 1); |
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assertEquals(1L, a.getAndAccumulate(0, 2L, Long::sum)); |
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assertEquals(3L, a.getAndAccumulate(0, 3L, Long::sum)); |
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assertEquals(6L, a.get(0)); |
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} |
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|
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/** |
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* AtomicLongArray accumulateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testLongArrayAccumulateAndGet() { |
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AtomicLongArray a = new AtomicLongArray(1); |
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a.set(0, 1); |
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assertEquals(7L, a.accumulateAndGet(0, 6L, Long::sum)); |
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assertEquals(10L, a.accumulateAndGet(0, 3L, Long::sum)); |
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assertEquals(10L, a.get(0)); |
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} |
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|
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/** |
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* AtomicIntegerArray getAndUpdate returns previous value and updates |
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* result of supplied function |
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*/ |
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public void testIntArrayGetAndUpdate() { |
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AtomicIntegerArray a = new AtomicIntegerArray(1); |
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a.set(0, 1); |
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assertEquals(1, a.getAndUpdate(0, Atomic8Test::addInt17)); |
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assertEquals(18, a.getAndUpdate(0, Atomic8Test::addInt17)); |
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assertEquals(35, a.get(0)); |
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} |
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|
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/** |
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* AtomicIntegerArray updateAndGet updates with supplied function and |
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* returns result. |
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*/ |
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public void testIntArrayUpdateAndGet() { |
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AtomicIntegerArray a = new AtomicIntegerArray(1); |
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a.set(0, 1); |
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assertEquals(18, a.updateAndGet(0, Atomic8Test::addInt17)); |
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assertEquals(35, a.updateAndGet(0, Atomic8Test::addInt17)); |
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assertEquals(35, a.get(0)); |
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} |
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|
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/** |
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* AtomicIntegerArray getAndAccumulate returns previous value and updates |
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* with supplied function. |
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*/ |
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public void testIntArrayGetAndAccumulate() { |
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AtomicIntegerArray a = new AtomicIntegerArray(1); |
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a.set(0, 1); |
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assertEquals(1, a.getAndAccumulate(0, 2, Integer::sum)); |
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assertEquals(3, a.getAndAccumulate(0, 3, Integer::sum)); |
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assertEquals(6, a.get(0)); |
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} |
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|
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/** |
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* AtomicIntegerArray accumulateAndGet updates with supplied function and |
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* returns result. |
279 |
*/ |
280 |
public void testIntArrayAccumulateAndGet() { |
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AtomicIntegerArray a = new AtomicIntegerArray(1); |
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a.set(0, 1); |
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assertEquals(7, a.accumulateAndGet(0, 6, Integer::sum)); |
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assertEquals(10, a.accumulateAndGet(0, 3, Integer::sum)); |
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} |
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|
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/** |
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* AtomicReferenceArray getAndUpdate returns previous value and updates |
289 |
* result of supplied function |
290 |
*/ |
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public void testReferenceArrayGetAndUpdate() { |
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AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1); |
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a.set(0, one); |
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assertEquals((Integer) 1, a.getAndUpdate(0, Atomic8Test::addInteger17)); |
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assertEquals((Integer) 18, a.getAndUpdate(0, Atomic8Test::addInteger17)); |
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assertEquals((Integer) 35, a.get(0)); |
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} |
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|
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/** |
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* AtomicReferenceArray updateAndGet updates with supplied function and |
301 |
* returns result. |
302 |
*/ |
303 |
public void testReferenceArrayUpdateAndGet() { |
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AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1); |
305 |
a.set(0, one); |
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assertEquals((Integer) 18, a.updateAndGet(0, Atomic8Test::addInteger17)); |
307 |
assertEquals((Integer) 35, a.updateAndGet(0, Atomic8Test::addInteger17)); |
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} |
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|
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/** |
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* AtomicReferenceArray getAndAccumulate returns previous value and updates |
312 |
* with supplied function. |
313 |
*/ |
314 |
public void testReferenceArrayGetAndAccumulate() { |
315 |
AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1); |
316 |
a.set(0, one); |
317 |
assertEquals((Integer) 1, a.getAndAccumulate(0, 2, Atomic8Test::sumInteger)); |
318 |
assertEquals((Integer) 3, a.getAndAccumulate(0, 3, Atomic8Test::sumInteger)); |
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assertEquals((Integer) 6, a.get(0)); |
320 |
} |
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|
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/** |
323 |
* AtomicReferenceArray accumulateAndGet updates with supplied function and |
324 |
* returns result. |
325 |
*/ |
326 |
public void testReferenceArrayAccumulateAndGet() { |
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AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1); |
328 |
a.set(0, one); |
329 |
assertEquals((Integer) 7, a.accumulateAndGet(0, 6, Atomic8Test::sumInteger)); |
330 |
assertEquals((Integer) 10, a.accumulateAndGet(0, 3, Atomic8Test::sumInteger)); |
331 |
} |
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|
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/** |
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* AtomicLongFieldUpdater getAndUpdate returns previous value and updates |
335 |
* result of supplied function |
336 |
*/ |
337 |
public void testLongFieldUpdaterGetAndUpdate() { |
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AtomicLongFieldUpdater a = aLongFieldUpdater(); |
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a.set(this, 1); |
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assertEquals(1L, a.getAndUpdate(this, Atomic8Test::addLong17)); |
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assertEquals(18L, a.getAndUpdate(this, Atomic8Test::addLong17)); |
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assertEquals(35L, a.get(this)); |
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assertEquals(35L, aLongField); |
344 |
} |
345 |
|
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/** |
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* AtomicLongFieldUpdater updateAndGet updates with supplied function and |
348 |
* returns result. |
349 |
*/ |
350 |
public void testLongFieldUpdaterUpdateAndGet() { |
351 |
AtomicLongFieldUpdater a = aLongFieldUpdater(); |
352 |
a.set(this, 1); |
353 |
assertEquals(18L, a.updateAndGet(this, Atomic8Test::addLong17)); |
354 |
assertEquals(35L, a.updateAndGet(this, Atomic8Test::addLong17)); |
355 |
assertEquals(35L, a.get(this)); |
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assertEquals(35L, aLongField); |
357 |
} |
358 |
|
359 |
/** |
360 |
* AtomicLongFieldUpdater getAndAccumulate returns previous value |
361 |
* and updates with supplied function. |
362 |
*/ |
363 |
public void testLongFieldUpdaterGetAndAccumulate() { |
364 |
AtomicLongFieldUpdater a = aLongFieldUpdater(); |
365 |
a.set(this, 1); |
366 |
assertEquals(1L, a.getAndAccumulate(this, 2L, Long::sum)); |
367 |
assertEquals(3L, a.getAndAccumulate(this, 3L, Long::sum)); |
368 |
assertEquals(6L, a.get(this)); |
369 |
assertEquals(6L, aLongField); |
370 |
} |
371 |
|
372 |
/** |
373 |
* AtomicLongFieldUpdater accumulateAndGet updates with supplied |
374 |
* function and returns result. |
375 |
*/ |
376 |
public void testLongFieldUpdaterAccumulateAndGet() { |
377 |
AtomicLongFieldUpdater a = aLongFieldUpdater(); |
378 |
a.set(this, 1); |
379 |
assertEquals(7L, a.accumulateAndGet(this, 6L, Long::sum)); |
380 |
assertEquals(10L, a.accumulateAndGet(this, 3L, Long::sum)); |
381 |
assertEquals(10L, a.get(this)); |
382 |
assertEquals(10L, aLongField); |
383 |
} |
384 |
|
385 |
/** |
386 |
* AtomicIntegerFieldUpdater getAndUpdate returns previous value and updates |
387 |
* result of supplied function |
388 |
*/ |
389 |
public void testIntegerFieldUpdaterGetAndUpdate() { |
390 |
AtomicIntegerFieldUpdater a = anIntFieldUpdater(); |
391 |
a.set(this, 1); |
392 |
assertEquals(1, a.getAndUpdate(this, Atomic8Test::addInt17)); |
393 |
assertEquals(18, a.getAndUpdate(this, Atomic8Test::addInt17)); |
394 |
assertEquals(35, a.get(this)); |
395 |
assertEquals(35, anIntField); |
396 |
} |
397 |
|
398 |
/** |
399 |
* AtomicIntegerFieldUpdater updateAndGet updates with supplied function and |
400 |
* returns result. |
401 |
*/ |
402 |
public void testIntegerFieldUpdaterUpdateAndGet() { |
403 |
AtomicIntegerFieldUpdater a = anIntFieldUpdater(); |
404 |
a.set(this, 1); |
405 |
assertEquals(18, a.updateAndGet(this, Atomic8Test::addInt17)); |
406 |
assertEquals(35, a.updateAndGet(this, Atomic8Test::addInt17)); |
407 |
assertEquals(35, a.get(this)); |
408 |
assertEquals(35, anIntField); |
409 |
} |
410 |
|
411 |
/** |
412 |
* AtomicIntegerFieldUpdater getAndAccumulate returns previous value |
413 |
* and updates with supplied function. |
414 |
*/ |
415 |
public void testIntegerFieldUpdaterGetAndAccumulate() { |
416 |
AtomicIntegerFieldUpdater a = anIntFieldUpdater(); |
417 |
a.set(this, 1); |
418 |
assertEquals(1, a.getAndAccumulate(this, 2, Integer::sum)); |
419 |
assertEquals(3, a.getAndAccumulate(this, 3, Integer::sum)); |
420 |
assertEquals(6, a.get(this)); |
421 |
assertEquals(6, anIntField); |
422 |
} |
423 |
|
424 |
/** |
425 |
* AtomicIntegerFieldUpdater accumulateAndGet updates with supplied |
426 |
* function and returns result. |
427 |
*/ |
428 |
public void testIntegerFieldUpdaterAccumulateAndGet() { |
429 |
AtomicIntegerFieldUpdater a = anIntFieldUpdater(); |
430 |
a.set(this, 1); |
431 |
assertEquals(7, a.accumulateAndGet(this, 6, Integer::sum)); |
432 |
assertEquals(10, a.accumulateAndGet(this, 3, Integer::sum)); |
433 |
assertEquals(10, a.get(this)); |
434 |
assertEquals(10, anIntField); |
435 |
} |
436 |
|
437 |
/** |
438 |
* AtomicReferenceFieldUpdater getAndUpdate returns previous value |
439 |
* and updates result of supplied function |
440 |
*/ |
441 |
public void testReferenceFieldUpdaterGetAndUpdate() { |
442 |
AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater(); |
443 |
a.set(this, one); |
444 |
assertEquals((Integer) 1, a.getAndUpdate(this, Atomic8Test::addInteger17)); |
445 |
assertEquals((Integer) 18, a.getAndUpdate(this, Atomic8Test::addInteger17)); |
446 |
assertEquals((Integer) 35, a.get(this)); |
447 |
assertEquals((Integer) 35, anIntegerField); |
448 |
} |
449 |
|
450 |
/** |
451 |
* AtomicReferenceFieldUpdater updateAndGet updates with supplied |
452 |
* function and returns result. |
453 |
*/ |
454 |
public void testReferenceFieldUpdaterUpdateAndGet() { |
455 |
AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater(); |
456 |
a.set(this, one); |
457 |
assertEquals((Integer) 18, a.updateAndGet(this, Atomic8Test::addInteger17)); |
458 |
assertEquals((Integer) 35, a.updateAndGet(this, Atomic8Test::addInteger17)); |
459 |
assertEquals((Integer) 35, a.get(this)); |
460 |
assertEquals((Integer) 35, anIntegerField); |
461 |
} |
462 |
|
463 |
/** |
464 |
* AtomicReferenceFieldUpdater returns previous value and updates |
465 |
* with supplied function. |
466 |
*/ |
467 |
public void testReferenceFieldUpdaterGetAndAccumulate() { |
468 |
AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater(); |
469 |
a.set(this, one); |
470 |
assertEquals((Integer) 1, a.getAndAccumulate(this, 2, Atomic8Test::sumInteger)); |
471 |
assertEquals((Integer) 3, a.getAndAccumulate(this, 3, Atomic8Test::sumInteger)); |
472 |
assertEquals((Integer) 6, a.get(this)); |
473 |
assertEquals((Integer) 6, anIntegerField); |
474 |
} |
475 |
|
476 |
/** |
477 |
* AtomicReferenceFieldUpdater accumulateAndGet updates with |
478 |
* supplied function and returns result. |
479 |
*/ |
480 |
public void testReferenceFieldUpdaterAccumulateAndGet() { |
481 |
AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater(); |
482 |
a.set(this, one); |
483 |
assertEquals((Integer) 7, a.accumulateAndGet(this, 6, Atomic8Test::sumInteger)); |
484 |
assertEquals((Integer) 10, a.accumulateAndGet(this, 3, Atomic8Test::sumInteger)); |
485 |
assertEquals((Integer) 10, a.get(this)); |
486 |
assertEquals((Integer) 10, anIntegerField); |
487 |
} |
488 |
|
489 |
/** |
490 |
* All Atomic getAndUpdate methods throw NullPointerException on |
491 |
* null function argument |
492 |
*/ |
493 |
public void testGetAndUpdateNPE() { |
494 |
Runnable[] throwingActions = { |
495 |
() -> new AtomicLong().getAndUpdate(null), |
496 |
() -> new AtomicInteger().getAndUpdate(null), |
497 |
() -> new AtomicReference().getAndUpdate(null), |
498 |
() -> new AtomicLongArray(1).getAndUpdate(0, null), |
499 |
() -> new AtomicIntegerArray(1).getAndUpdate(0, null), |
500 |
() -> new AtomicReferenceArray(1).getAndUpdate(0, null), |
501 |
() -> aLongFieldUpdater().getAndUpdate(this, null), |
502 |
() -> anIntFieldUpdater().getAndUpdate(this, null), |
503 |
() -> anIntegerFieldUpdater().getAndUpdate(this, null), |
504 |
}; |
505 |
assertThrows(NullPointerException.class, throwingActions); |
506 |
} |
507 |
|
508 |
/** |
509 |
* All Atomic updateAndGet methods throw NullPointerException on null function argument |
510 |
*/ |
511 |
public void testUpdateAndGetNPE() { |
512 |
Runnable[] throwingActions = { |
513 |
() -> new AtomicLong().updateAndGet(null), |
514 |
() -> new AtomicInteger().updateAndGet(null), |
515 |
() -> new AtomicReference().updateAndGet(null), |
516 |
() -> new AtomicLongArray(1).updateAndGet(0, null), |
517 |
() -> new AtomicIntegerArray(1).updateAndGet(0, null), |
518 |
() -> new AtomicReferenceArray(1).updateAndGet(0, null), |
519 |
() -> aLongFieldUpdater().updateAndGet(this, null), |
520 |
() -> anIntFieldUpdater().updateAndGet(this, null), |
521 |
() -> anIntegerFieldUpdater().updateAndGet(this, null), |
522 |
}; |
523 |
assertThrows(NullPointerException.class, throwingActions); |
524 |
} |
525 |
|
526 |
/** |
527 |
* All Atomic getAndAccumulate methods throw NullPointerException |
528 |
* on null function argument |
529 |
*/ |
530 |
public void testGetAndAccumulateNPE() { |
531 |
Runnable[] throwingActions = { |
532 |
() -> new AtomicLong().getAndAccumulate(1L, null), |
533 |
() -> new AtomicInteger().getAndAccumulate(1, null), |
534 |
() -> new AtomicReference().getAndAccumulate(one, null), |
535 |
() -> new AtomicLongArray(1).getAndAccumulate(0, 1L, null), |
536 |
() -> new AtomicIntegerArray(1).getAndAccumulate(0, 1, null), |
537 |
() -> new AtomicReferenceArray(1).getAndAccumulate(0, one, null), |
538 |
() -> aLongFieldUpdater().getAndAccumulate(this, 1L, null), |
539 |
() -> anIntFieldUpdater().getAndAccumulate(this, 1, null), |
540 |
() -> anIntegerFieldUpdater().getAndAccumulate(this, one, null), |
541 |
}; |
542 |
assertThrows(NullPointerException.class, throwingActions); |
543 |
} |
544 |
|
545 |
/** |
546 |
* All Atomic accumulateAndGet methods throw NullPointerException |
547 |
* on null function argument |
548 |
*/ |
549 |
public void testAccumulateAndGetNPE() { |
550 |
Runnable[] throwingActions = { |
551 |
() -> new AtomicLong().accumulateAndGet(1L, null), |
552 |
() -> new AtomicInteger().accumulateAndGet(1, null), |
553 |
() -> new AtomicReference().accumulateAndGet(one, null), |
554 |
() -> new AtomicLongArray(1).accumulateAndGet(0, 1L, null), |
555 |
() -> new AtomicIntegerArray(1).accumulateAndGet(0, 1, null), |
556 |
() -> new AtomicReferenceArray(1).accumulateAndGet(0, one, null), |
557 |
() -> aLongFieldUpdater().accumulateAndGet(this, 1L, null), |
558 |
() -> anIntFieldUpdater().accumulateAndGet(this, 1, null), |
559 |
() -> anIntegerFieldUpdater().accumulateAndGet(this, one, null), |
560 |
}; |
561 |
assertThrows(NullPointerException.class, throwingActions); |
562 |
} |
563 |
|
564 |
/** |
565 |
* Object arguments for parameters of type T that are not |
566 |
* instances of the class passed to the newUpdater call will |
567 |
* result in a ClassCastException being thrown. |
568 |
*/ |
569 |
public void testFieldUpdaters_ClassCastException() { |
570 |
// Use raw types to allow passing wrong object type, provoking CCE |
571 |
final AtomicLongFieldUpdater longUpdater = aLongFieldUpdater(); |
572 |
final AtomicIntegerFieldUpdater intUpdater = anIntFieldUpdater(); |
573 |
final AtomicReferenceFieldUpdater refUpdater = anIntegerFieldUpdater(); |
574 |
final Object obj = new Object(); |
575 |
for (Object x : new Object[]{ new Object(), null }) { |
576 |
Runnable[] throwingActions = { |
577 |
() -> longUpdater.get(x), |
578 |
() -> intUpdater.get(x), |
579 |
() -> refUpdater.get(x), |
580 |
|
581 |
() -> longUpdater.set(x, 17L), |
582 |
() -> intUpdater.set(x, 17), |
583 |
() -> refUpdater.set(x, (Integer) 17), |
584 |
|
585 |
() -> longUpdater.addAndGet(x, 17L), |
586 |
() -> intUpdater.addAndGet(x, 17), |
587 |
|
588 |
() -> longUpdater.getAndUpdate(x, y -> y), |
589 |
() -> intUpdater.getAndUpdate(x, y -> y), |
590 |
() -> refUpdater.getAndUpdate(x, y -> y), |
591 |
|
592 |
() -> longUpdater.compareAndSet(x, 17L, 42L), |
593 |
() -> intUpdater.compareAndSet(x, 17, 42), |
594 |
() -> refUpdater.compareAndSet(x, (Integer) 17, (Integer) 42), |
595 |
}; |
596 |
assertThrows(ClassCastException.class, throwingActions); |
597 |
} |
598 |
} |
599 |
|
600 |
} |