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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 Item addItem17(Item x) { |
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return new Item(x.intValue() + 17); |
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} |
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static Item sumItem(Item x, Item y) { |
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return new Item(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 Item anItemField; |
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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,Item> anItemFieldUpdater() { |
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return AtomicReferenceFieldUpdater.newUpdater |
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(Atomic8Test.class, Item.class, "anItemField"); |
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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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mustEqual(1L, a.getAndUpdate(Atomic8Test::addLong17)); |
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mustEqual(18L, a.getAndUpdate(Atomic8Test::addLong17)); |
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mustEqual(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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mustEqual(18L, a.updateAndGet(Atomic8Test::addLong17)); |
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mustEqual(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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mustEqual(1L, a.getAndAccumulate(2L, Long::sum)); |
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mustEqual(3L, a.getAndAccumulate(3L, Long::sum)); |
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mustEqual(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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mustEqual(7L, a.accumulateAndGet(6L, Long::sum)); |
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mustEqual(10L, a.accumulateAndGet(3L, Long::sum)); |
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mustEqual(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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mustEqual(1, a.getAndUpdate(Atomic8Test::addInt17)); |
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mustEqual(18, a.getAndUpdate(Atomic8Test::addInt17)); |
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mustEqual(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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mustEqual(18, a.updateAndGet(Atomic8Test::addInt17)); |
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mustEqual(35, a.updateAndGet(Atomic8Test::addInt17)); |
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mustEqual(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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mustEqual(1, a.getAndAccumulate(2, Integer::sum)); |
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mustEqual(3, a.getAndAccumulate(3, Integer::sum)); |
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mustEqual(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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mustEqual(7, a.accumulateAndGet(6, Integer::sum)); |
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mustEqual(10, a.accumulateAndGet(3, Integer::sum)); |
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mustEqual(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<Item> a = new AtomicReference<>(one); |
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mustEqual(1, a.getAndUpdate(Atomic8Test::addItem17)); |
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mustEqual(18, a.getAndUpdate(Atomic8Test::addItem17)); |
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mustEqual(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<Item> a = new AtomicReference<>(one); |
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mustEqual(18, a.updateAndGet(Atomic8Test::addItem17)); |
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mustEqual(35, a.updateAndGet(Atomic8Test::addItem17)); |
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mustEqual(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<Item> a = new AtomicReference<>(one); |
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mustEqual( 1, a.getAndAccumulate(two, Atomic8Test::sumItem)); |
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mustEqual( 3, a.getAndAccumulate(three, Atomic8Test::sumItem)); |
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mustEqual( 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<Item> a = new AtomicReference<>(one); |
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mustEqual( 7, a.accumulateAndGet(six, Atomic8Test::sumItem)); |
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mustEqual( 10, a.accumulateAndGet(three, Atomic8Test::sumItem)); |
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mustEqual( 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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mustEqual(1L, a.getAndUpdate(0, Atomic8Test::addLong17)); |
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mustEqual(18L, a.getAndUpdate(0, Atomic8Test::addLong17)); |
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mustEqual(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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mustEqual(18L, a.updateAndGet(0, Atomic8Test::addLong17)); |
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mustEqual(35L, a.updateAndGet(0, Atomic8Test::addLong17)); |
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mustEqual(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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mustEqual(1L, a.getAndAccumulate(0, 2L, Long::sum)); |
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mustEqual(3L, a.getAndAccumulate(0, 3L, Long::sum)); |
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mustEqual(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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mustEqual(7L, a.accumulateAndGet(0, 6L, Long::sum)); |
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mustEqual(10L, a.accumulateAndGet(0, 3L, Long::sum)); |
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mustEqual(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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mustEqual(1, a.getAndUpdate(0, Atomic8Test::addInt17)); |
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mustEqual(18, a.getAndUpdate(0, Atomic8Test::addInt17)); |
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mustEqual(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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mustEqual(18, a.updateAndGet(0, Atomic8Test::addInt17)); |
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mustEqual(35, a.updateAndGet(0, Atomic8Test::addInt17)); |
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mustEqual(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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mustEqual(1, a.getAndAccumulate(0, 2, Integer::sum)); |
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mustEqual(3, a.getAndAccumulate(0, 3, Integer::sum)); |
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mustEqual(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. |
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*/ |
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public void testIntArrayAccumulateAndGet() { |
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AtomicIntegerArray a = new AtomicIntegerArray(1); |
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a.set(0, 1); |
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mustEqual(7, a.accumulateAndGet(0, 6, Integer::sum)); |
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mustEqual(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 |
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* result of supplied function |
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*/ |
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public void testReferenceArrayGetAndUpdate() { |
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AtomicReferenceArray<Item> a = new AtomicReferenceArray<>(1); |
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a.set(0, one); |
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mustEqual( 1, a.getAndUpdate(0, Atomic8Test::addItem17)); |
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mustEqual( 18, a.getAndUpdate(0, Atomic8Test::addItem17)); |
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mustEqual( 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 |
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* returns result. |
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*/ |
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public void testReferenceArrayUpdateAndGet() { |
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AtomicReferenceArray<Item> a = new AtomicReferenceArray<>(1); |
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a.set(0, one); |
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mustEqual( 18, a.updateAndGet(0, Atomic8Test::addItem17)); |
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mustEqual( 35, a.updateAndGet(0, Atomic8Test::addItem17)); |
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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. |
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*/ |
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public void testReferenceArrayGetAndAccumulate() { |
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AtomicReferenceArray<Item> a = new AtomicReferenceArray<>(1); |
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a.set(0, one); |
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mustEqual( 1, a.getAndAccumulate(0, two, Atomic8Test::sumItem)); |
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mustEqual( 3, a.getAndAccumulate(0, three, Atomic8Test::sumItem)); |
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mustEqual( 6, a.get(0)); |
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} |
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|
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/** |
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* AtomicReferenceArray accumulateAndGet updates with supplied function and |
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* returns result. |
325 |
*/ |
326 |
public void testReferenceArrayAccumulateAndGet() { |
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AtomicReferenceArray<Item> a = new AtomicReferenceArray<>(1); |
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a.set(0, one); |
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mustEqual( 7, a.accumulateAndGet(0, six, Atomic8Test::sumItem)); |
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mustEqual( 10, a.accumulateAndGet(0, three, Atomic8Test::sumItem)); |
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} |
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|
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/** |
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* AtomicLongFieldUpdater getAndUpdate returns previous value and updates |
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* result of supplied function |
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*/ |
337 |
public void testLongFieldUpdaterGetAndUpdate() { |
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AtomicLongFieldUpdater<Atomic8Test> a = aLongFieldUpdater(); |
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a.set(this, 1L); |
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mustEqual(1L, a.getAndUpdate(this, Atomic8Test::addLong17)); |
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mustEqual(18L, a.getAndUpdate(this, Atomic8Test::addLong17)); |
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mustEqual(35L, a.get(this)); |
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mustEqual(35L, aLongField); |
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} |
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|
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/** |
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* AtomicLongFieldUpdater updateAndGet updates with supplied function and |
348 |
* returns result. |
349 |
*/ |
350 |
public void testLongFieldUpdaterUpdateAndGet() { |
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AtomicLongFieldUpdater<Atomic8Test> a = aLongFieldUpdater(); |
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a.set(this, 1L); |
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mustEqual(18L, a.updateAndGet(this, Atomic8Test::addLong17)); |
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mustEqual(35L, a.updateAndGet(this, Atomic8Test::addLong17)); |
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mustEqual(35L, a.get(this)); |
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mustEqual(35L, aLongField); |
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} |
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|
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/** |
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* AtomicLongFieldUpdater getAndAccumulate returns previous value |
361 |
* and updates with supplied function. |
362 |
*/ |
363 |
public void testLongFieldUpdaterGetAndAccumulate() { |
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AtomicLongFieldUpdater<Atomic8Test> a = aLongFieldUpdater(); |
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a.set(this, 1L); |
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mustEqual(1L, a.getAndAccumulate(this, 2L, Long::sum)); |
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mustEqual(3L, a.getAndAccumulate(this, 3L, Long::sum)); |
368 |
mustEqual(6L, a.get(this)); |
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mustEqual(6L, aLongField); |
370 |
} |
371 |
|
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/** |
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* AtomicLongFieldUpdater accumulateAndGet updates with supplied |
374 |
* function and returns result. |
375 |
*/ |
376 |
public void testLongFieldUpdaterAccumulateAndGet() { |
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AtomicLongFieldUpdater<Atomic8Test> a = aLongFieldUpdater(); |
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a.set(this, 1L); |
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mustEqual(7L, a.accumulateAndGet(this, 6L, Long::sum)); |
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mustEqual(10L, a.accumulateAndGet(this, 3L, Long::sum)); |
381 |
mustEqual(10L, a.get(this)); |
382 |
mustEqual(10L, aLongField); |
383 |
} |
384 |
|
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/** |
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* AtomicIntegerFieldUpdater getAndUpdate returns previous value and updates |
387 |
* result of supplied function |
388 |
*/ |
389 |
public void testIntegerFieldUpdaterGetAndUpdate() { |
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AtomicIntegerFieldUpdater<Atomic8Test> a = anIntFieldUpdater(); |
391 |
a.set(this, 1); |
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mustEqual(1, a.getAndUpdate(this, Atomic8Test::addInt17)); |
393 |
mustEqual(18, a.getAndUpdate(this, Atomic8Test::addInt17)); |
394 |
mustEqual(35, a.get(this)); |
395 |
mustEqual(35, anIntField); |
396 |
} |
397 |
|
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/** |
399 |
* AtomicIntegerFieldUpdater updateAndGet updates with supplied function and |
400 |
* returns result. |
401 |
*/ |
402 |
public void testIntegerFieldUpdaterUpdateAndGet() { |
403 |
AtomicIntegerFieldUpdater<Atomic8Test> a = anIntFieldUpdater(); |
404 |
a.set(this, 1); |
405 |
mustEqual(18, a.updateAndGet(this, Atomic8Test::addInt17)); |
406 |
mustEqual(35, a.updateAndGet(this, Atomic8Test::addInt17)); |
407 |
mustEqual(35, a.get(this)); |
408 |
mustEqual(35, anIntField); |
409 |
} |
410 |
|
411 |
/** |
412 |
* AtomicIntegerFieldUpdater getAndAccumulate returns previous value |
413 |
* and updates with supplied function. |
414 |
*/ |
415 |
public void testIntegerFieldUpdaterGetAndAccumulate() { |
416 |
AtomicIntegerFieldUpdater<Atomic8Test> a = anIntFieldUpdater(); |
417 |
a.set(this, 1); |
418 |
mustEqual(1, a.getAndAccumulate(this, 2, Integer::sum)); |
419 |
mustEqual(3, a.getAndAccumulate(this, 3, Integer::sum)); |
420 |
mustEqual(6, a.get(this)); |
421 |
mustEqual(6, anIntField); |
422 |
} |
423 |
|
424 |
/** |
425 |
* AtomicIntegerFieldUpdater accumulateAndGet updates with supplied |
426 |
* function and returns result. |
427 |
*/ |
428 |
public void testIntegerFieldUpdaterAccumulateAndGet() { |
429 |
AtomicIntegerFieldUpdater<Atomic8Test> a = anIntFieldUpdater(); |
430 |
a.set(this, 1); |
431 |
mustEqual(7, a.accumulateAndGet(this, 6, Integer::sum)); |
432 |
mustEqual(10, a.accumulateAndGet(this, 3, Integer::sum)); |
433 |
mustEqual(10, a.get(this)); |
434 |
mustEqual(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,Item> a = anItemFieldUpdater(); |
443 |
a.set(this, one); |
444 |
mustEqual( 1, a.getAndUpdate(this, Atomic8Test::addItem17)); |
445 |
mustEqual( 18, a.getAndUpdate(this, Atomic8Test::addItem17)); |
446 |
mustEqual( 35, a.get(this)); |
447 |
mustEqual( 35, anItemField); |
448 |
} |
449 |
|
450 |
/** |
451 |
* AtomicReferenceFieldUpdater updateAndGet updates with supplied |
452 |
* function and returns result. |
453 |
*/ |
454 |
public void testReferenceFieldUpdaterUpdateAndGet() { |
455 |
AtomicReferenceFieldUpdater<Atomic8Test,Item> a = anItemFieldUpdater(); |
456 |
a.set(this, one); |
457 |
mustEqual( 18, a.updateAndGet(this, Atomic8Test::addItem17)); |
458 |
mustEqual( 35, a.updateAndGet(this, Atomic8Test::addItem17)); |
459 |
mustEqual( 35, a.get(this)); |
460 |
mustEqual( 35, anItemField); |
461 |
} |
462 |
|
463 |
/** |
464 |
* AtomicReferenceFieldUpdater returns previous value and updates |
465 |
* with supplied function. |
466 |
*/ |
467 |
public void testReferenceFieldUpdaterGetAndAccumulate() { |
468 |
AtomicReferenceFieldUpdater<Atomic8Test,Item> a = anItemFieldUpdater(); |
469 |
a.set(this, one); |
470 |
mustEqual( 1, a.getAndAccumulate(this, two, Atomic8Test::sumItem)); |
471 |
mustEqual( 3, a.getAndAccumulate(this, three, Atomic8Test::sumItem)); |
472 |
mustEqual( 6, a.get(this)); |
473 |
mustEqual( 6, anItemField); |
474 |
} |
475 |
|
476 |
/** |
477 |
* AtomicReferenceFieldUpdater accumulateAndGet updates with |
478 |
* supplied function and returns result. |
479 |
*/ |
480 |
public void testReferenceFieldUpdaterAccumulateAndGet() { |
481 |
AtomicReferenceFieldUpdater<Atomic8Test,Item> a = anItemFieldUpdater(); |
482 |
a.set(this, one); |
483 |
mustEqual( 7, a.accumulateAndGet(this, six, Atomic8Test::sumItem)); |
484 |
mustEqual( 10, a.accumulateAndGet(this, three, Atomic8Test::sumItem)); |
485 |
mustEqual( 10, a.get(this)); |
486 |
mustEqual( 10, anItemField); |
487 |
} |
488 |
|
489 |
/** |
490 |
* All Atomic getAndUpdate methods throw NullPointerException on |
491 |
* null function argument |
492 |
*/ |
493 |
@SuppressWarnings("unchecked") |
494 |
public void testGetAndUpdateNPE() { |
495 |
assertThrows( |
496 |
NullPointerException.class, |
497 |
() -> new AtomicLong().getAndUpdate(null), |
498 |
() -> new AtomicInteger().getAndUpdate(null), |
499 |
() -> new AtomicReference().getAndUpdate(null), |
500 |
() -> new AtomicLongArray(1).getAndUpdate(0, null), |
501 |
() -> new AtomicIntegerArray(1).getAndUpdate(0, null), |
502 |
() -> new AtomicReferenceArray(1).getAndUpdate(0, null), |
503 |
() -> aLongFieldUpdater().getAndUpdate(this, null), |
504 |
() -> anIntFieldUpdater().getAndUpdate(this, null), |
505 |
() -> anItemFieldUpdater().getAndUpdate(this, null)); |
506 |
} |
507 |
|
508 |
/** |
509 |
* All Atomic updateAndGet methods throw NullPointerException on null function argument |
510 |
*/ |
511 |
@SuppressWarnings("unchecked") |
512 |
public void testUpdateAndGetNPE() { |
513 |
assertThrows( |
514 |
NullPointerException.class, |
515 |
() -> new AtomicLong().updateAndGet(null), |
516 |
() -> new AtomicInteger().updateAndGet(null), |
517 |
() -> new AtomicReference().updateAndGet(null), |
518 |
() -> new AtomicLongArray(1).updateAndGet(0, null), |
519 |
() -> new AtomicIntegerArray(1).updateAndGet(0, null), |
520 |
() -> new AtomicReferenceArray(1).updateAndGet(0, null), |
521 |
() -> aLongFieldUpdater().updateAndGet(this, null), |
522 |
() -> anIntFieldUpdater().updateAndGet(this, null), |
523 |
() -> anItemFieldUpdater().updateAndGet(this, null)); |
524 |
} |
525 |
|
526 |
/** |
527 |
* All Atomic getAndAccumulate methods throw NullPointerException |
528 |
* on null function argument |
529 |
*/ |
530 |
@SuppressWarnings("unchecked") |
531 |
public void testGetAndAccumulateNPE() { |
532 |
assertThrows( |
533 |
NullPointerException.class, |
534 |
() -> new AtomicLong().getAndAccumulate(1L, null), |
535 |
() -> new AtomicInteger().getAndAccumulate(1, null), |
536 |
() -> new AtomicReference().getAndAccumulate(one, null), |
537 |
() -> new AtomicLongArray(1).getAndAccumulate(0, 1L, null), |
538 |
() -> new AtomicIntegerArray(1).getAndAccumulate(0, 1, null), |
539 |
() -> new AtomicReferenceArray(1).getAndAccumulate(0, one, null), |
540 |
() -> aLongFieldUpdater().getAndAccumulate(this, 1L, null), |
541 |
() -> anIntFieldUpdater().getAndAccumulate(this, 1, null), |
542 |
() -> anItemFieldUpdater().getAndAccumulate(this, one, null)); |
543 |
} |
544 |
|
545 |
/** |
546 |
* All Atomic accumulateAndGet methods throw NullPointerException |
547 |
* on null function argument |
548 |
*/ |
549 |
@SuppressWarnings("unchecked") |
550 |
public void testAccumulateAndGetNPE() { |
551 |
assertThrows( |
552 |
NullPointerException.class, |
553 |
() -> new AtomicLong().accumulateAndGet(1L, null), |
554 |
() -> new AtomicInteger().accumulateAndGet(1, null), |
555 |
() -> new AtomicReference().accumulateAndGet(one, null), |
556 |
() -> new AtomicLongArray(1).accumulateAndGet(0, 1L, null), |
557 |
() -> new AtomicIntegerArray(1).accumulateAndGet(0, 1, null), |
558 |
() -> new AtomicReferenceArray(1).accumulateAndGet(0, one, null), |
559 |
() -> aLongFieldUpdater().accumulateAndGet(this, 1L, null), |
560 |
() -> anIntFieldUpdater().accumulateAndGet(this, 1, null), |
561 |
() -> anItemFieldUpdater().accumulateAndGet(this, one, null)); |
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 |
@SuppressWarnings("unchecked") |
570 |
public void testFieldUpdaters_ClassCastException() { |
571 |
// Use raw types to allow passing wrong object type, provoking CCE |
572 |
final AtomicLongFieldUpdater longUpdater = aLongFieldUpdater(); |
573 |
final AtomicIntegerFieldUpdater intUpdater = anIntFieldUpdater(); |
574 |
final AtomicReferenceFieldUpdater refUpdater = anItemFieldUpdater(); |
575 |
for (Object x : new Object[]{ new Object(), null }) { |
576 |
assertThrows( |
577 |
ClassCastException.class, |
578 |
() -> longUpdater.get(x), |
579 |
() -> intUpdater.get(x), |
580 |
() -> refUpdater.get(x), |
581 |
|
582 |
() -> longUpdater.set(x, 17L), |
583 |
() -> intUpdater.set(x, 17), |
584 |
() -> refUpdater.set(x, new Item(17)), |
585 |
|
586 |
() -> longUpdater.addAndGet(x, 17L), |
587 |
() -> intUpdater.addAndGet(x, 17), |
588 |
|
589 |
() -> longUpdater.getAndUpdate(x, y -> y), |
590 |
() -> intUpdater.getAndUpdate(x, y -> y), |
591 |
() -> refUpdater.getAndUpdate(x, y -> y), |
592 |
|
593 |
() -> longUpdater.compareAndSet(x, 17L, 42L), |
594 |
() -> intUpdater.compareAndSet(x, 17, 42), |
595 |
() -> refUpdater.compareAndSet(x, 17, fortytwo)); |
596 |
} |
597 |
} |
598 |
|
599 |
} |