test/tck/Atomic8Test.java

/*
 * Written by Doug Lea and Martin Buchholz with assistance from
 * members of JCP JSR-166 Expert Group and released to the public
 * domain, as explained at
 * http://creativecommons.org/publicdomain/zero/1.0/
 */

import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicIntegerArray;
import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.atomic.AtomicLongArray;
import java.util.concurrent.atomic.AtomicLongFieldUpdater;
import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.atomic.AtomicReferenceArray;
import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;

import junit.framework.Test;
import junit.framework.TestSuite;

public class Atomic8Test extends JSR166TestCase {

    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }
    public static Test suite() {
        return new TestSuite(Atomic8Test.class);
    }

    /*
     * Tests of atomic class methods accepting lambdas
     * introduced in JDK8.
     */

    static long addLong17(long x) { return x + 17; }
    static int addInt17(int x) { return x + 17; }
    static Integer addInteger17(Integer x) {
        return new Integer(x.intValue() + 17);
    }
    static Integer sumInteger(Integer x, Integer y) {
        return new Integer(x.intValue() + y.intValue());
    }

    volatile long aLongField;
    volatile int anIntField;
    volatile Integer anIntegerField;

    AtomicLongFieldUpdater aLongFieldUpdater() {
        return AtomicLongFieldUpdater.newUpdater
            (Atomic8Test.class, "aLongField");
    }

    AtomicIntegerFieldUpdater anIntFieldUpdater() {
        return AtomicIntegerFieldUpdater.newUpdater
            (Atomic8Test.class, "anIntField");
    }

    AtomicReferenceFieldUpdater<Atomic8Test,Integer> anIntegerFieldUpdater() {
        return AtomicReferenceFieldUpdater.newUpdater
            (Atomic8Test.class, Integer.class, "anIntegerField");
    }

    /**
     * AtomicLong getAndUpdate returns previous value and updates
     * result of supplied function
     */
    public void testLongGetAndUpdate() {
        AtomicLong a = new AtomicLong(1L);
        assertEquals(1L, a.getAndUpdate(Atomic8Test::addLong17));
        assertEquals(18L, a.getAndUpdate(Atomic8Test::addLong17));
        assertEquals(35L, a.get());
    }

    /**
     * AtomicLong updateAndGet updates with supplied function and
     * returns result.
     */
    public void testLongUpdateAndGet() {
        AtomicLong a = new AtomicLong(1L);
        assertEquals(18L, a.updateAndGet(Atomic8Test::addLong17));
        assertEquals(35L, a.updateAndGet(Atomic8Test::addLong17));
    }

    /**
     * AtomicLong getAndAccumulate returns previous value and updates
     * with supplied function.
     */
    public void testLongGetAndAccumulate() {
        AtomicLong a = new AtomicLong(1L);
        assertEquals(1L, a.getAndAccumulate(2L, Long::sum));
        assertEquals(3L, a.getAndAccumulate(3L, Long::sum));
        assertEquals(6L, a.get());
    }

    /**
     * AtomicLong accumulateAndGet updates with supplied function and
     * returns result.
     */
    public void testLongAccumulateAndGet() {
        AtomicLong a = new AtomicLong(1L);
        assertEquals(7L, a.accumulateAndGet(6L, Long::sum));
        assertEquals(10L, a.accumulateAndGet(3L, Long::sum));
        assertEquals(10L, a.get());
    }

    /**
     * AtomicInteger getAndUpdate returns previous value and updates
     * result of supplied function
     */
    public void testIntGetAndUpdate() {
        AtomicInteger a = new AtomicInteger(1);
        assertEquals(1, a.getAndUpdate(Atomic8Test::addInt17));
        assertEquals(18, a.getAndUpdate(Atomic8Test::addInt17));
        assertEquals(35, a.get());
    }

    /**
     * AtomicInteger updateAndGet updates with supplied function and
     * returns result.
     */
    public void testIntUpdateAndGet() {
        AtomicInteger a = new AtomicInteger(1);
        assertEquals(18, a.updateAndGet(Atomic8Test::addInt17));
        assertEquals(35, a.updateAndGet(Atomic8Test::addInt17));
        assertEquals(35, a.get());
    }

    /**
     * AtomicInteger getAndAccumulate returns previous value and updates
     * with supplied function.
     */
    public void testIntGetAndAccumulate() {
        AtomicInteger a = new AtomicInteger(1);
        assertEquals(1, a.getAndAccumulate(2, Integer::sum));
        assertEquals(3, a.getAndAccumulate(3, Integer::sum));
        assertEquals(6, a.get());
    }

    /**
     * AtomicInteger accumulateAndGet updates with supplied function and
     * returns result.
     */
    public void testIntAccumulateAndGet() {
        AtomicInteger a = new AtomicInteger(1);
        assertEquals(7, a.accumulateAndGet(6, Integer::sum));
        assertEquals(10, a.accumulateAndGet(3, Integer::sum));
        assertEquals(10, a.get());
    }

    /**
     * AtomicReference getAndUpdate returns previous value and updates
     * result of supplied function
     */
    public void testReferenceGetAndUpdate() {
        AtomicReference<Integer> a = new AtomicReference<Integer>(one);
        assertEquals(new Integer(1), a.getAndUpdate(Atomic8Test::addInteger17));
        assertEquals(new Integer(18), a.getAndUpdate(Atomic8Test::addInteger17));
        assertEquals(new Integer(35), a.get());
    }

    /**
     * AtomicReference updateAndGet updates with supplied function and
     * returns result.
     */
    public void testReferenceUpdateAndGet() {
        AtomicReference<Integer> a = new AtomicReference<Integer>(one);
        assertEquals(new Integer(18), a.updateAndGet(Atomic8Test::addInteger17));
        assertEquals(new Integer(35), a.updateAndGet(Atomic8Test::addInteger17));
        assertEquals(new Integer(35), a.get());
    }

    /**
     * AtomicReference getAndAccumulate returns previous value and updates
     * with supplied function.
     */
    public void testReferenceGetAndAccumulate() {
        AtomicReference<Integer> a = new AtomicReference<Integer>(one);
        assertEquals(new Integer(1), a.getAndAccumulate(2, Atomic8Test::sumInteger));
        assertEquals(new Integer(3), a.getAndAccumulate(3, Atomic8Test::sumInteger));
        assertEquals(new Integer(6), a.get());
    }

    /**
     * AtomicReference accumulateAndGet updates with supplied function and
     * returns result.
     */
    public void testReferenceAccumulateAndGet() {
        AtomicReference<Integer> a = new AtomicReference<Integer>(one);
        assertEquals(new Integer(7), a.accumulateAndGet(6, Atomic8Test::sumInteger));
        assertEquals(new Integer(10), a.accumulateAndGet(3, Atomic8Test::sumInteger));
        assertEquals(new Integer(10), a.get());
    }

    /**
     * AtomicLongArray getAndUpdate returns previous value and updates
     * result of supplied function
     */
    public void testLongArrayGetAndUpdate() {
        AtomicLongArray a = new AtomicLongArray(1);
        a.set(0, 1);
        assertEquals(1L, a.getAndUpdate(0, Atomic8Test::addLong17));
        assertEquals(18L, a.getAndUpdate(0, Atomic8Test::addLong17));
        assertEquals(35L, a.get(0));
    }

    /**
     * AtomicLongArray updateAndGet updates with supplied function and
     * returns result.
     */
    public void testLongArrayUpdateAndGet() {
        AtomicLongArray a = new AtomicLongArray(1);
        a.set(0, 1);
        assertEquals(18L, a.updateAndGet(0, Atomic8Test::addLong17));
        assertEquals(35L, a.updateAndGet(0, Atomic8Test::addLong17));
        assertEquals(35L, a.get(0));
    }

    /**
     * AtomicLongArray getAndAccumulate returns previous value and updates
     * with supplied function.
     */
    public void testLongArrayGetAndAccumulate() {
        AtomicLongArray a = new AtomicLongArray(1);
        a.set(0, 1);
        assertEquals(1L, a.getAndAccumulate(0, 2L, Long::sum));
        assertEquals(3L, a.getAndAccumulate(0, 3L, Long::sum));
        assertEquals(6L, a.get(0));
    }

    /**
     * AtomicLongArray accumulateAndGet updates with supplied function and
     * returns result.
     */
    public void testLongArrayAccumulateAndGet() {
        AtomicLongArray a = new AtomicLongArray(1);
        a.set(0, 1);
        assertEquals(7L, a.accumulateAndGet(0, 6L, Long::sum));
        assertEquals(10L, a.accumulateAndGet(0, 3L, Long::sum));
        assertEquals(10L, a.get(0));
    }

    /**
     * AtomicIntegerArray getAndUpdate returns previous value and updates
     * result of supplied function
     */
    public void testIntArrayGetAndUpdate() {
        AtomicIntegerArray a = new AtomicIntegerArray(1);
        a.set(0, 1);
        assertEquals(1, a.getAndUpdate(0, Atomic8Test::addInt17));
        assertEquals(18, a.getAndUpdate(0, Atomic8Test::addInt17));
        assertEquals(35, a.get(0));
    }

    /**
     * AtomicIntegerArray updateAndGet updates with supplied function and
     * returns result.
     */
    public void testIntArrayUpdateAndGet() {
        AtomicIntegerArray a = new AtomicIntegerArray(1);
        a.set(0, 1);
        assertEquals(18, a.updateAndGet(0, Atomic8Test::addInt17));
        assertEquals(35, a.updateAndGet(0, Atomic8Test::addInt17));
        assertEquals(35, a.get(0));
    }

    /**
     * AtomicIntegerArray getAndAccumulate returns previous value and updates
     * with supplied function.
     */
    public void testIntArrayGetAndAccumulate() {
        AtomicIntegerArray a = new AtomicIntegerArray(1);
        a.set(0, 1);
        assertEquals(1, a.getAndAccumulate(0, 2, Integer::sum));
        assertEquals(3, a.getAndAccumulate(0, 3, Integer::sum));
        assertEquals(6, a.get(0));
    }

    /**
     * AtomicIntegerArray accumulateAndGet updates with supplied function and
     * returns result.
     */
    public void testIntArrayAccumulateAndGet() {
        AtomicIntegerArray a = new AtomicIntegerArray(1);
        a.set(0, 1);
        assertEquals(7, a.accumulateAndGet(0, 6, Integer::sum));
        assertEquals(10, a.accumulateAndGet(0, 3, Integer::sum));
    }

    /**
     * AtomicReferenceArray getAndUpdate returns previous value and updates
     * result of supplied function
     */
    public void testReferenceArrayGetAndUpdate() {
        AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1);
        a.set(0, one);
        assertEquals(new Integer(1), a.getAndUpdate(0, Atomic8Test::addInteger17));
        assertEquals(new Integer(18), a.getAndUpdate(0, Atomic8Test::addInteger17));
        assertEquals(new Integer(35), a.get(0));
    }

    /**
     * AtomicReferenceArray updateAndGet updates with supplied function and
     * returns result.
     */
    public void testReferenceArrayUpdateAndGet() {
        AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1);
        a.set(0, one);
        assertEquals(new Integer(18), a.updateAndGet(0, Atomic8Test::addInteger17));
        assertEquals(new Integer(35), a.updateAndGet(0, Atomic8Test::addInteger17));
    }

    /**
     * AtomicReferenceArray getAndAccumulate returns previous value and updates
     * with supplied function.
     */
    public void testReferenceArrayGetAndAccumulate() {
        AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1);
        a.set(0, one);
        assertEquals(new Integer(1), a.getAndAccumulate(0, 2, Atomic8Test::sumInteger));
        assertEquals(new Integer(3), a.getAndAccumulate(0, 3, Atomic8Test::sumInteger));
        assertEquals(new Integer(6), a.get(0));
    }

    /**
     * AtomicReferenceArray accumulateAndGet updates with supplied function and
     * returns result.
     */
    public void testReferenceArrayAccumulateAndGet() {
        AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1);
        a.set(0, one);
        assertEquals(new Integer(7), a.accumulateAndGet(0, 6, Atomic8Test::sumInteger));
        assertEquals(new Integer(10), a.accumulateAndGet(0, 3, Atomic8Test::sumInteger));
    }

    /**
     * AtomicLongFieldUpdater getAndUpdate returns previous value and updates
     * result of supplied function
     */
    public void testLongFieldUpdaterGetAndUpdate() {
        AtomicLongFieldUpdater a = aLongFieldUpdater();
        a.set(this, 1);
        assertEquals(1L, a.getAndUpdate(this, Atomic8Test::addLong17));
        assertEquals(18L, a.getAndUpdate(this, Atomic8Test::addLong17));
        assertEquals(35L, a.get(this));
        assertEquals(35L, aLongField);
    }

    /**
     * AtomicLongFieldUpdater updateAndGet updates with supplied function and
     * returns result.
     */
    public void testLongFieldUpdaterUpdateAndGet() {
        AtomicLongFieldUpdater a = aLongFieldUpdater();
        a.set(this, 1);
        assertEquals(18L, a.updateAndGet(this, Atomic8Test::addLong17));
        assertEquals(35L, a.updateAndGet(this, Atomic8Test::addLong17));
        assertEquals(35L, a.get(this));
        assertEquals(35L, aLongField);
    }

    /**
     * AtomicLongFieldUpdater getAndAccumulate returns previous value
     * and updates with supplied function.
     */
    public void testLongFieldUpdaterGetAndAccumulate() {
        AtomicLongFieldUpdater a = aLongFieldUpdater();
        a.set(this, 1);
        assertEquals(1L, a.getAndAccumulate(this, 2L, Long::sum));
        assertEquals(3L, a.getAndAccumulate(this, 3L, Long::sum));
        assertEquals(6L, a.get(this));
        assertEquals(6L, aLongField);
    }

    /**
     * AtomicLongFieldUpdater accumulateAndGet updates with supplied
     * function and returns result.
     */
    public void testLongFieldUpdaterAccumulateAndGet() {
        AtomicLongFieldUpdater a = aLongFieldUpdater();
        a.set(this, 1);
        assertEquals(7L, a.accumulateAndGet(this, 6L, Long::sum));
        assertEquals(10L, a.accumulateAndGet(this, 3L, Long::sum));
        assertEquals(10L, a.get(this));
        assertEquals(10L, aLongField);
    }

    /**
     * AtomicIntegerFieldUpdater getAndUpdate returns previous value and updates
     * result of supplied function
     */
    public void testIntegerFieldUpdaterGetAndUpdate() {
        AtomicIntegerFieldUpdater a = anIntFieldUpdater();
        a.set(this, 1);
        assertEquals(1, a.getAndUpdate(this, Atomic8Test::addInt17));
        assertEquals(18, a.getAndUpdate(this, Atomic8Test::addInt17));
        assertEquals(35, a.get(this));
        assertEquals(35, anIntField);
    }

    /**
     * AtomicIntegerFieldUpdater updateAndGet updates with supplied function and
     * returns result.
     */
    public void testIntegerFieldUpdaterUpdateAndGet() {
        AtomicIntegerFieldUpdater a = anIntFieldUpdater();
        a.set(this, 1);
        assertEquals(18, a.updateAndGet(this, Atomic8Test::addInt17));
        assertEquals(35, a.updateAndGet(this, Atomic8Test::addInt17));
        assertEquals(35, a.get(this));
        assertEquals(35, anIntField);
    }

    /**
     * AtomicIntegerFieldUpdater getAndAccumulate returns previous value
     * and updates with supplied function.
     */
    public void testIntegerFieldUpdaterGetAndAccumulate() {
        AtomicIntegerFieldUpdater a = anIntFieldUpdater();
        a.set(this, 1);
        assertEquals(1, a.getAndAccumulate(this, 2, Integer::sum));
        assertEquals(3, a.getAndAccumulate(this, 3, Integer::sum));
        assertEquals(6, a.get(this));
        assertEquals(6, anIntField);
    }

    /**
     * AtomicIntegerFieldUpdater accumulateAndGet updates with supplied
     * function and returns result.
     */
    public void testIntegerFieldUpdaterAccumulateAndGet() {
        AtomicIntegerFieldUpdater a = anIntFieldUpdater();
        a.set(this, 1);
        assertEquals(7, a.accumulateAndGet(this, 6, Integer::sum));
        assertEquals(10, a.accumulateAndGet(this, 3, Integer::sum));
        assertEquals(10, a.get(this));
        assertEquals(10, anIntField);
    }

    /**
     * AtomicReferenceFieldUpdater getAndUpdate returns previous value
     * and updates result of supplied function
     */
    public void testReferenceFieldUpdaterGetAndUpdate() {
        AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater();
        a.set(this, one);
        assertEquals(new Integer(1), a.getAndUpdate(this, Atomic8Test::addInteger17));
        assertEquals(new Integer(18), a.getAndUpdate(this, Atomic8Test::addInteger17));
        assertEquals(new Integer(35), a.get(this));
        assertEquals(new Integer(35), anIntegerField);
    }

    /**
     * AtomicReferenceFieldUpdater updateAndGet updates with supplied
     * function and returns result.
     */
    public void testReferenceFieldUpdaterUpdateAndGet() {
        AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater();
        a.set(this, one);
        assertEquals(new Integer(18), a.updateAndGet(this, Atomic8Test::addInteger17));
        assertEquals(new Integer(35), a.updateAndGet(this, Atomic8Test::addInteger17));
        assertEquals(new Integer(35), a.get(this));
        assertEquals(new Integer(35), anIntegerField);
    }

    /**
     * AtomicReferenceFieldUpdater returns previous value and updates
     * with supplied function.
     */
    public void testReferenceFieldUpdaterGetAndAccumulate() {
        AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater();
        a.set(this, one);
        assertEquals(new Integer(1), a.getAndAccumulate(this, 2, Atomic8Test::sumInteger));
        assertEquals(new Integer(3), a.getAndAccumulate(this, 3, Atomic8Test::sumInteger));
        assertEquals(new Integer(6), a.get(this));
        assertEquals(new Integer(6), anIntegerField);
    }

    /**
     * AtomicReferenceFieldUpdater accumulateAndGet updates with
     * supplied function and returns result.
     */
    public void testReferenceFieldUpdaterAccumulateAndGet() {
        AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater();
        a.set(this, one);
        assertEquals(new Integer(7), a.accumulateAndGet(this, 6, Atomic8Test::sumInteger));
        assertEquals(new Integer(10), a.accumulateAndGet(this, 3, Atomic8Test::sumInteger));
        assertEquals(new Integer(10), a.get(this));
        assertEquals(new Integer(10), anIntegerField);
    }

    /**
     * All Atomic getAndUpdate methods throw NullPointerException on
     * null function argument
     */
    public void testGetAndUpdateNPE() {
        Runnable[] throwingActions = {
            () -> new AtomicLong().getAndUpdate(null),
            () -> new AtomicInteger().getAndUpdate(null),
            () -> new AtomicReference().getAndUpdate(null),
            () -> new AtomicLongArray(1).getAndUpdate(0, null),
            () -> new AtomicIntegerArray(1).getAndUpdate(0, null),
            () -> new AtomicReferenceArray(1).getAndUpdate(0, null),
            () -> aLongFieldUpdater().getAndUpdate(this, null),
            () -> anIntFieldUpdater().getAndUpdate(this, null),
            () -> anIntegerFieldUpdater().getAndUpdate(this, null),
            ////() -> aLongFieldUpdater().getAndUpdate(null, Atomic8Test::addLong17),
            ////() -> anIntFieldUpdater().getAndUpdate(null, Atomic8Test::addInt17),
            ////() -> anIntegerFieldUpdater().getAndUpdate(null, Atomic8Test::addInteger17),
        };
        assertThrows(NullPointerException.class, throwingActions);
    }

    /**
     * All Atomic updateAndGet methods throw NullPointerException on null function argument
     */
    public void testUpdateAndGetNPE() {
        Runnable[] throwingActions = {
            () -> new AtomicLong().updateAndGet(null),
            () -> new AtomicInteger().updateAndGet(null),
            () -> new AtomicReference().updateAndGet(null),
            () -> new AtomicLongArray(1).updateAndGet(0, null),
            () -> new AtomicIntegerArray(1).updateAndGet(0, null),
            () -> new AtomicReferenceArray(1).updateAndGet(0, null),
            () -> aLongFieldUpdater().updateAndGet(this, null),
            () -> anIntFieldUpdater().updateAndGet(this, null),
            () -> anIntegerFieldUpdater().updateAndGet(this, null),
        };
        assertThrows(NullPointerException.class, throwingActions);
    }

    /**
     * All Atomic getAndAccumulate methods throw NullPointerException
     * on null function argument
     */
    public void testGetAndAccumulateNPE() {
        Runnable[] throwingActions = {
            () -> new AtomicLong().getAndAccumulate(1L, null),
            () -> new AtomicInteger().getAndAccumulate(1, null),
            () -> new AtomicReference().getAndAccumulate(one, null),
            () -> new AtomicLongArray(1).getAndAccumulate(0, 1L, null),
            () -> new AtomicIntegerArray(1).getAndAccumulate(0, 1, null),
            () -> new AtomicReferenceArray(1).getAndAccumulate(0, one, null),
            () -> aLongFieldUpdater().getAndAccumulate(this, 1L, null),
            () -> anIntFieldUpdater().getAndAccumulate(this, 1, null),
            () -> anIntegerFieldUpdater().getAndAccumulate(this, one, null),
        };
        assertThrows(NullPointerException.class, throwingActions);
    }

    /**
     * All Atomic accumulateAndGet methods throw NullPointerException
     * on null function argument
     */
    public void testAccumulateAndGetNPE() {
        Runnable[] throwingActions = {
            () -> new AtomicLong().accumulateAndGet(1L, null),
            () -> new AtomicInteger().accumulateAndGet(1, null),
            () -> new AtomicReference().accumulateAndGet(one, null),
            () -> new AtomicLongArray(1).accumulateAndGet(0, 1L, null),
            () -> new AtomicIntegerArray(1).accumulateAndGet(0, 1, null),
            () -> new AtomicReferenceArray(1).accumulateAndGet(0, one, null),
            () -> aLongFieldUpdater().accumulateAndGet(this, 1L, null),
            () -> anIntFieldUpdater().accumulateAndGet(this, 1, null),
            () -> anIntegerFieldUpdater().accumulateAndGet(this, one, null),
        };
        assertThrows(NullPointerException.class, throwingActions);
    }

}
Revision:	1.4
Committed:	Thu Jan 15 18:34:19 2015 UTC (9 years, 3 months ago) by jsr166
Branch:	MAIN
Changes since 1.3:	+0 -2 lines
Log Message:	delete extraneous blank lines
#	Content
1	/*
2	* Written by Doug Lea and Martin Buchholz with assistance from
3	* members of JCP JSR-166 Expert Group and released to the public
4	* domain, as explained at
5	* http://creativecommons.org/publicdomain/zero/1.0/
6	*/
7
8	import java.util.concurrent.atomic.AtomicInteger;
9	import java.util.concurrent.atomic.AtomicIntegerArray;
10	import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
11	import java.util.concurrent.atomic.AtomicLong;
12	import java.util.concurrent.atomic.AtomicLongArray;
13	import java.util.concurrent.atomic.AtomicLongFieldUpdater;
14	import java.util.concurrent.atomic.AtomicReference;
15	import java.util.concurrent.atomic.AtomicReferenceArray;
16	import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
17
18	import junit.framework.Test;
19	import junit.framework.TestSuite;
20
21	public class Atomic8Test extends JSR166TestCase {
22
23	public static void main(String[] args) {
24	junit.textui.TestRunner.run(suite());
25	}
26	public static Test suite() {
27	return new TestSuite(Atomic8Test.class);
28	}
29
30	/*
31	* Tests of atomic class methods accepting lambdas
32	* introduced in JDK8.
33	*/
34
35	static long addLong17(long x) { return x + 17; }
36	static int addInt17(int x) { return x + 17; }
37	static Integer addInteger17(Integer x) {
38	return new Integer(x.intValue() + 17);
39	}
40	static Integer sumInteger(Integer x, Integer y) {
41	return new Integer(x.intValue() + y.intValue());
42	}
43
44	volatile long aLongField;
45	volatile int anIntField;
46	volatile Integer anIntegerField;
47
48	AtomicLongFieldUpdater aLongFieldUpdater() {
49	return AtomicLongFieldUpdater.newUpdater
50	(Atomic8Test.class, "aLongField");
51	}
52
53	AtomicIntegerFieldUpdater anIntFieldUpdater() {
54	return AtomicIntegerFieldUpdater.newUpdater
55	(Atomic8Test.class, "anIntField");
56	}
57
58	AtomicReferenceFieldUpdater<Atomic8Test,Integer> anIntegerFieldUpdater() {
59	return AtomicReferenceFieldUpdater.newUpdater
60	(Atomic8Test.class, Integer.class, "anIntegerField");
61	}
62
63	/**
64	* AtomicLong getAndUpdate returns previous value and updates
65	* result of supplied function
66	*/
67	public void testLongGetAndUpdate() {
68	AtomicLong a = new AtomicLong(1L);
69	assertEquals(1L, a.getAndUpdate(Atomic8Test::addLong17));
70	assertEquals(18L, a.getAndUpdate(Atomic8Test::addLong17));
71	assertEquals(35L, a.get());
72	}
73
74	/**
75	* AtomicLong updateAndGet updates with supplied function and
76	* returns result.
77	*/
78	public void testLongUpdateAndGet() {
79	AtomicLong a = new AtomicLong(1L);
80	assertEquals(18L, a.updateAndGet(Atomic8Test::addLong17));
81	assertEquals(35L, a.updateAndGet(Atomic8Test::addLong17));
82	}
83
84	/**
85	* AtomicLong getAndAccumulate returns previous value and updates
86	* with supplied function.
87	*/
88	public void testLongGetAndAccumulate() {
89	AtomicLong a = new AtomicLong(1L);
90	assertEquals(1L, a.getAndAccumulate(2L, Long::sum));
91	assertEquals(3L, a.getAndAccumulate(3L, Long::sum));
92	assertEquals(6L, a.get());
93	}
94
95	/**
96	* AtomicLong accumulateAndGet updates with supplied function and
97	* returns result.
98	*/
99	public void testLongAccumulateAndGet() {
100	AtomicLong a = new AtomicLong(1L);
101	assertEquals(7L, a.accumulateAndGet(6L, Long::sum));
102	assertEquals(10L, a.accumulateAndGet(3L, Long::sum));
103	assertEquals(10L, a.get());
104	}
105
106	/**
107	* AtomicInteger getAndUpdate returns previous value and updates
108	* result of supplied function
109	*/
110	public void testIntGetAndUpdate() {
111	AtomicInteger a = new AtomicInteger(1);
112	assertEquals(1, a.getAndUpdate(Atomic8Test::addInt17));
113	assertEquals(18, a.getAndUpdate(Atomic8Test::addInt17));
114	assertEquals(35, a.get());
115	}
116
117	/**
118	* AtomicInteger updateAndGet updates with supplied function and
119	* returns result.
120	*/
121	public void testIntUpdateAndGet() {
122	AtomicInteger a = new AtomicInteger(1);
123	assertEquals(18, a.updateAndGet(Atomic8Test::addInt17));
124	assertEquals(35, a.updateAndGet(Atomic8Test::addInt17));
125	assertEquals(35, a.get());
126	}
127
128	/**
129	* AtomicInteger getAndAccumulate returns previous value and updates
130	* with supplied function.
131	*/
132	public void testIntGetAndAccumulate() {
133	AtomicInteger a = new AtomicInteger(1);
134	assertEquals(1, a.getAndAccumulate(2, Integer::sum));
135	assertEquals(3, a.getAndAccumulate(3, Integer::sum));
136	assertEquals(6, a.get());
137	}
138
139	/**
140	* AtomicInteger accumulateAndGet updates with supplied function and
141	* returns result.
142	*/
143	public void testIntAccumulateAndGet() {
144	AtomicInteger a = new AtomicInteger(1);
145	assertEquals(7, a.accumulateAndGet(6, Integer::sum));
146	assertEquals(10, a.accumulateAndGet(3, Integer::sum));
147	assertEquals(10, a.get());
148	}
149
150	/**
151	* AtomicReference getAndUpdate returns previous value and updates
152	* result of supplied function
153	*/
154	public void testReferenceGetAndUpdate() {
155	AtomicReference<Integer> a = new AtomicReference<Integer>(one);
156	assertEquals(new Integer(1), a.getAndUpdate(Atomic8Test::addInteger17));
157	assertEquals(new Integer(18), a.getAndUpdate(Atomic8Test::addInteger17));
158	assertEquals(new Integer(35), a.get());
159	}
160
161	/**
162	* AtomicReference updateAndGet updates with supplied function and
163	* returns result.
164	*/
165	public void testReferenceUpdateAndGet() {
166	AtomicReference<Integer> a = new AtomicReference<Integer>(one);
167	assertEquals(new Integer(18), a.updateAndGet(Atomic8Test::addInteger17));
168	assertEquals(new Integer(35), a.updateAndGet(Atomic8Test::addInteger17));
169	assertEquals(new Integer(35), a.get());
170	}
171
172	/**
173	* AtomicReference getAndAccumulate returns previous value and updates
174	* with supplied function.
175	*/
176	public void testReferenceGetAndAccumulate() {
177	AtomicReference<Integer> a = new AtomicReference<Integer>(one);
178	assertEquals(new Integer(1), a.getAndAccumulate(2, Atomic8Test::sumInteger));
179	assertEquals(new Integer(3), a.getAndAccumulate(3, Atomic8Test::sumInteger));
180	assertEquals(new Integer(6), a.get());
181	}
182
183	/**
184	* AtomicReference accumulateAndGet updates with supplied function and
185	* returns result.
186	*/
187	public void testReferenceAccumulateAndGet() {
188	AtomicReference<Integer> a = new AtomicReference<Integer>(one);
189	assertEquals(new Integer(7), a.accumulateAndGet(6, Atomic8Test::sumInteger));
190	assertEquals(new Integer(10), a.accumulateAndGet(3, Atomic8Test::sumInteger));
191	assertEquals(new Integer(10), a.get());
192	}
193
194	/**
195	* AtomicLongArray getAndUpdate returns previous value and updates
196	* result of supplied function
197	*/
198	public void testLongArrayGetAndUpdate() {
199	AtomicLongArray a = new AtomicLongArray(1);
200	a.set(0, 1);
201	assertEquals(1L, a.getAndUpdate(0, Atomic8Test::addLong17));
202	assertEquals(18L, a.getAndUpdate(0, Atomic8Test::addLong17));
203	assertEquals(35L, a.get(0));
204	}
205
206	/**
207	* AtomicLongArray updateAndGet updates with supplied function and
208	* returns result.
209	*/
210	public void testLongArrayUpdateAndGet() {
211	AtomicLongArray a = new AtomicLongArray(1);
212	a.set(0, 1);
213	assertEquals(18L, a.updateAndGet(0, Atomic8Test::addLong17));
214	assertEquals(35L, a.updateAndGet(0, Atomic8Test::addLong17));
215	assertEquals(35L, a.get(0));
216	}
217
218	/**
219	* AtomicLongArray getAndAccumulate returns previous value and updates
220	* with supplied function.
221	*/
222	public void testLongArrayGetAndAccumulate() {
223	AtomicLongArray a = new AtomicLongArray(1);
224	a.set(0, 1);
225	assertEquals(1L, a.getAndAccumulate(0, 2L, Long::sum));
226	assertEquals(3L, a.getAndAccumulate(0, 3L, Long::sum));
227	assertEquals(6L, a.get(0));
228	}
229
230	/**
231	* AtomicLongArray accumulateAndGet updates with supplied function and
232	* returns result.
233	*/
234	public void testLongArrayAccumulateAndGet() {
235	AtomicLongArray a = new AtomicLongArray(1);
236	a.set(0, 1);
237	assertEquals(7L, a.accumulateAndGet(0, 6L, Long::sum));
238	assertEquals(10L, a.accumulateAndGet(0, 3L, Long::sum));
239	assertEquals(10L, a.get(0));
240	}
241
242	/**
243	* AtomicIntegerArray getAndUpdate returns previous value and updates
244	* result of supplied function
245	*/
246	public void testIntArrayGetAndUpdate() {
247	AtomicIntegerArray a = new AtomicIntegerArray(1);
248	a.set(0, 1);
249	assertEquals(1, a.getAndUpdate(0, Atomic8Test::addInt17));
250	assertEquals(18, a.getAndUpdate(0, Atomic8Test::addInt17));
251	assertEquals(35, a.get(0));
252	}
253
254	/**
255	* AtomicIntegerArray updateAndGet updates with supplied function and
256	* returns result.
257	*/
258	public void testIntArrayUpdateAndGet() {
259	AtomicIntegerArray a = new AtomicIntegerArray(1);
260	a.set(0, 1);
261	assertEquals(18, a.updateAndGet(0, Atomic8Test::addInt17));
262	assertEquals(35, a.updateAndGet(0, Atomic8Test::addInt17));
263	assertEquals(35, a.get(0));
264	}
265
266	/**
267	* AtomicIntegerArray getAndAccumulate returns previous value and updates
268	* with supplied function.
269	*/
270	public void testIntArrayGetAndAccumulate() {
271	AtomicIntegerArray a = new AtomicIntegerArray(1);
272	a.set(0, 1);
273	assertEquals(1, a.getAndAccumulate(0, 2, Integer::sum));
274	assertEquals(3, a.getAndAccumulate(0, 3, Integer::sum));
275	assertEquals(6, a.get(0));
276	}
277
278	/**
279	* AtomicIntegerArray accumulateAndGet updates with supplied function and
280	* returns result.
281	*/
282	public void testIntArrayAccumulateAndGet() {
283	AtomicIntegerArray a = new AtomicIntegerArray(1);
284	a.set(0, 1);
285	assertEquals(7, a.accumulateAndGet(0, 6, Integer::sum));
286	assertEquals(10, a.accumulateAndGet(0, 3, Integer::sum));
287	}
288
289	/**
290	* AtomicReferenceArray getAndUpdate returns previous value and updates
291	* result of supplied function
292	*/
293	public void testReferenceArrayGetAndUpdate() {
294	AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1);
295	a.set(0, one);
296	assertEquals(new Integer(1), a.getAndUpdate(0, Atomic8Test::addInteger17));
297	assertEquals(new Integer(18), a.getAndUpdate(0, Atomic8Test::addInteger17));
298	assertEquals(new Integer(35), a.get(0));
299	}
300
301	/**
302	* AtomicReferenceArray updateAndGet updates with supplied function and
303	* returns result.
304	*/
305	public void testReferenceArrayUpdateAndGet() {
306	AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1);
307	a.set(0, one);
308	assertEquals(new Integer(18), a.updateAndGet(0, Atomic8Test::addInteger17));
309	assertEquals(new Integer(35), a.updateAndGet(0, Atomic8Test::addInteger17));
310	}
311
312	/**
313	* AtomicReferenceArray getAndAccumulate returns previous value and updates
314	* with supplied function.
315	*/
316	public void testReferenceArrayGetAndAccumulate() {
317	AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1);
318	a.set(0, one);
319	assertEquals(new Integer(1), a.getAndAccumulate(0, 2, Atomic8Test::sumInteger));
320	assertEquals(new Integer(3), a.getAndAccumulate(0, 3, Atomic8Test::sumInteger));
321	assertEquals(new Integer(6), a.get(0));
322	}
323
324	/**
325	* AtomicReferenceArray accumulateAndGet updates with supplied function and
326	* returns result.
327	*/
328	public void testReferenceArrayAccumulateAndGet() {
329	AtomicReferenceArray<Integer> a = new AtomicReferenceArray<Integer>(1);
330	a.set(0, one);
331	assertEquals(new Integer(7), a.accumulateAndGet(0, 6, Atomic8Test::sumInteger));
332	assertEquals(new Integer(10), a.accumulateAndGet(0, 3, Atomic8Test::sumInteger));
333	}
334
335	/**
336	* AtomicLongFieldUpdater getAndUpdate returns previous value and updates
337	* result of supplied function
338	*/
339	public void testLongFieldUpdaterGetAndUpdate() {
340	AtomicLongFieldUpdater a = aLongFieldUpdater();
341	a.set(this, 1);
342	assertEquals(1L, a.getAndUpdate(this, Atomic8Test::addLong17));
343	assertEquals(18L, a.getAndUpdate(this, Atomic8Test::addLong17));
344	assertEquals(35L, a.get(this));
345	assertEquals(35L, aLongField);
346	}
347
348	/**
349	* AtomicLongFieldUpdater updateAndGet updates with supplied function and
350	* returns result.
351	*/
352	public void testLongFieldUpdaterUpdateAndGet() {
353	AtomicLongFieldUpdater a = aLongFieldUpdater();
354	a.set(this, 1);
355	assertEquals(18L, a.updateAndGet(this, Atomic8Test::addLong17));
356	assertEquals(35L, a.updateAndGet(this, Atomic8Test::addLong17));
357	assertEquals(35L, a.get(this));
358	assertEquals(35L, aLongField);
359	}
360
361	/**
362	* AtomicLongFieldUpdater getAndAccumulate returns previous value
363	* and updates with supplied function.
364	*/
365	public void testLongFieldUpdaterGetAndAccumulate() {
366	AtomicLongFieldUpdater a = aLongFieldUpdater();
367	a.set(this, 1);
368	assertEquals(1L, a.getAndAccumulate(this, 2L, Long::sum));
369	assertEquals(3L, a.getAndAccumulate(this, 3L, Long::sum));
370	assertEquals(6L, a.get(this));
371	assertEquals(6L, aLongField);
372	}
373
374	/**
375	* AtomicLongFieldUpdater accumulateAndGet updates with supplied
376	* function and returns result.
377	*/
378	public void testLongFieldUpdaterAccumulateAndGet() {
379	AtomicLongFieldUpdater a = aLongFieldUpdater();
380	a.set(this, 1);
381	assertEquals(7L, a.accumulateAndGet(this, 6L, Long::sum));
382	assertEquals(10L, a.accumulateAndGet(this, 3L, Long::sum));
383	assertEquals(10L, a.get(this));
384	assertEquals(10L, aLongField);
385	}
386
387	/**
388	* AtomicIntegerFieldUpdater getAndUpdate returns previous value and updates
389	* result of supplied function
390	*/
391	public void testIntegerFieldUpdaterGetAndUpdate() {
392	AtomicIntegerFieldUpdater a = anIntFieldUpdater();
393	a.set(this, 1);
394	assertEquals(1, a.getAndUpdate(this, Atomic8Test::addInt17));
395	assertEquals(18, a.getAndUpdate(this, Atomic8Test::addInt17));
396	assertEquals(35, a.get(this));
397	assertEquals(35, anIntField);
398	}
399
400	/**
401	* AtomicIntegerFieldUpdater updateAndGet updates with supplied function and
402	* returns result.
403	*/
404	public void testIntegerFieldUpdaterUpdateAndGet() {
405	AtomicIntegerFieldUpdater a = anIntFieldUpdater();
406	a.set(this, 1);
407	assertEquals(18, a.updateAndGet(this, Atomic8Test::addInt17));
408	assertEquals(35, a.updateAndGet(this, Atomic8Test::addInt17));
409	assertEquals(35, a.get(this));
410	assertEquals(35, anIntField);
411	}
412
413	/**
414	* AtomicIntegerFieldUpdater getAndAccumulate returns previous value
415	* and updates with supplied function.
416	*/
417	public void testIntegerFieldUpdaterGetAndAccumulate() {
418	AtomicIntegerFieldUpdater a = anIntFieldUpdater();
419	a.set(this, 1);
420	assertEquals(1, a.getAndAccumulate(this, 2, Integer::sum));
421	assertEquals(3, a.getAndAccumulate(this, 3, Integer::sum));
422	assertEquals(6, a.get(this));
423	assertEquals(6, anIntField);
424	}
425
426	/**
427	* AtomicIntegerFieldUpdater accumulateAndGet updates with supplied
428	* function and returns result.
429	*/
430	public void testIntegerFieldUpdaterAccumulateAndGet() {
431	AtomicIntegerFieldUpdater a = anIntFieldUpdater();
432	a.set(this, 1);
433	assertEquals(7, a.accumulateAndGet(this, 6, Integer::sum));
434	assertEquals(10, a.accumulateAndGet(this, 3, Integer::sum));
435	assertEquals(10, a.get(this));
436	assertEquals(10, anIntField);
437	}
438
439	/**
440	* AtomicReferenceFieldUpdater getAndUpdate returns previous value
441	* and updates result of supplied function
442	*/
443	public void testReferenceFieldUpdaterGetAndUpdate() {
444	AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater();
445	a.set(this, one);
446	assertEquals(new Integer(1), a.getAndUpdate(this, Atomic8Test::addInteger17));
447	assertEquals(new Integer(18), a.getAndUpdate(this, Atomic8Test::addInteger17));
448	assertEquals(new Integer(35), a.get(this));
449	assertEquals(new Integer(35), anIntegerField);
450	}
451
452	/**
453	* AtomicReferenceFieldUpdater updateAndGet updates with supplied
454	* function and returns result.
455	*/
456	public void testReferenceFieldUpdaterUpdateAndGet() {
457	AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater();
458	a.set(this, one);
459	assertEquals(new Integer(18), a.updateAndGet(this, Atomic8Test::addInteger17));
460	assertEquals(new Integer(35), a.updateAndGet(this, Atomic8Test::addInteger17));
461	assertEquals(new Integer(35), a.get(this));
462	assertEquals(new Integer(35), anIntegerField);
463	}
464
465	/**
466	* AtomicReferenceFieldUpdater returns previous value and updates
467	* with supplied function.
468	*/
469	public void testReferenceFieldUpdaterGetAndAccumulate() {
470	AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater();
471	a.set(this, one);
472	assertEquals(new Integer(1), a.getAndAccumulate(this, 2, Atomic8Test::sumInteger));
473	assertEquals(new Integer(3), a.getAndAccumulate(this, 3, Atomic8Test::sumInteger));
474	assertEquals(new Integer(6), a.get(this));
475	assertEquals(new Integer(6), anIntegerField);
476	}
477
478	/**
479	* AtomicReferenceFieldUpdater accumulateAndGet updates with
480	* supplied function and returns result.
481	*/
482	public void testReferenceFieldUpdaterAccumulateAndGet() {
483	AtomicReferenceFieldUpdater<Atomic8Test,Integer> a = anIntegerFieldUpdater();
484	a.set(this, one);
485	assertEquals(new Integer(7), a.accumulateAndGet(this, 6, Atomic8Test::sumInteger));
486	assertEquals(new Integer(10), a.accumulateAndGet(this, 3, Atomic8Test::sumInteger));
487	assertEquals(new Integer(10), a.get(this));
488	assertEquals(new Integer(10), anIntegerField);
489	}
490
491	/**
492	* All Atomic getAndUpdate methods throw NullPointerException on
493	* null function argument
494	*/
495	public void testGetAndUpdateNPE() {
496	Runnable[] throwingActions = {
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	() -> anIntegerFieldUpdater().getAndUpdate(this, null),
506	////() -> aLongFieldUpdater().getAndUpdate(null, Atomic8Test::addLong17),
507	////() -> anIntFieldUpdater().getAndUpdate(null, Atomic8Test::addInt17),
508	////() -> anIntegerFieldUpdater().getAndUpdate(null, Atomic8Test::addInteger17),
509	};
510	assertThrows(NullPointerException.class, throwingActions);
511	}
512
513	/**
514	* All Atomic updateAndGet methods throw NullPointerException on null function argument
515	*/
516	public void testUpdateAndGetNPE() {
517	Runnable[] throwingActions = {
518	() -> new AtomicLong().updateAndGet(null),
519	() -> new AtomicInteger().updateAndGet(null),
520	() -> new AtomicReference().updateAndGet(null),
521	() -> new AtomicLongArray(1).updateAndGet(0, null),
522	() -> new AtomicIntegerArray(1).updateAndGet(0, null),
523	() -> new AtomicReferenceArray(1).updateAndGet(0, null),
524	() -> aLongFieldUpdater().updateAndGet(this, null),
525	() -> anIntFieldUpdater().updateAndGet(this, null),
526	() -> anIntegerFieldUpdater().updateAndGet(this, null),
527	};
528	assertThrows(NullPointerException.class, throwingActions);
529	}
530
531	/**
532	* All Atomic getAndAccumulate methods throw NullPointerException
533	* on null function argument
534	*/
535	public void testGetAndAccumulateNPE() {
536	Runnable[] throwingActions = {
537	() -> new AtomicLong().getAndAccumulate(1L, null),
538	() -> new AtomicInteger().getAndAccumulate(1, null),
539	() -> new AtomicReference().getAndAccumulate(one, null),
540	() -> new AtomicLongArray(1).getAndAccumulate(0, 1L, null),
541	() -> new AtomicIntegerArray(1).getAndAccumulate(0, 1, null),
542	() -> new AtomicReferenceArray(1).getAndAccumulate(0, one, null),
543	() -> aLongFieldUpdater().getAndAccumulate(this, 1L, null),
544	() -> anIntFieldUpdater().getAndAccumulate(this, 1, null),
545	() -> anIntegerFieldUpdater().getAndAccumulate(this, one, null),
546	};
547	assertThrows(NullPointerException.class, throwingActions);
548	}
549
550	/**
551	* All Atomic accumulateAndGet methods throw NullPointerException
552	* on null function argument
553	*/
554	public void testAccumulateAndGetNPE() {
555	Runnable[] throwingActions = {
556	() -> new AtomicLong().accumulateAndGet(1L, null),
557	() -> new AtomicInteger().accumulateAndGet(1, null),
558	() -> new AtomicReference().accumulateAndGet(one, null),
559	() -> new AtomicLongArray(1).accumulateAndGet(0, 1L, null),
560	() -> new AtomicIntegerArray(1).accumulateAndGet(0, 1, null),
561	() -> new AtomicReferenceArray(1).accumulateAndGet(0, one, null),
562	() -> aLongFieldUpdater().accumulateAndGet(this, 1L, null),
563	() -> anIntFieldUpdater().accumulateAndGet(this, 1, null),
564	() -> anIntegerFieldUpdater().accumulateAndGet(this, one, null),
565	};
566	assertThrows(NullPointerException.class, throwingActions);
567	}
568
569	}