| Methods Summary |
|---|
| public static void | main(java.lang.String[] args)
junit.textui.TestRunner.run (suite());
|
| public static junit.framework.Test | suite()
return new TestSuite(AtomicReferenceTest.class);
|
| public void | testCompareAndSet()compareAndSet succeeds in changing value if equal to expected else fails
AtomicReference ai = new AtomicReference(one);
assertTrue(ai.compareAndSet(one,two));
assertTrue(ai.compareAndSet(two,m4));
assertEquals(m4,ai.get());
assertFalse(ai.compareAndSet(m5,seven));
assertFalse((seven.equals(ai.get())));
assertTrue(ai.compareAndSet(m4,seven));
assertEquals(seven,ai.get());
|
| public void | testCompareAndSetInMultipleThreads()compareAndSet in one thread enables another waiting for value
to succeed
final AtomicReference ai = new AtomicReference(one);
Thread t = new Thread(new Runnable() {
public void run() {
while(!ai.compareAndSet(two, three)) Thread.yield();
}});
try {
t.start();
assertTrue(ai.compareAndSet(one, two));
t.join(LONG_DELAY_MS);
assertFalse(t.isAlive());
assertEquals(ai.get(), three);
}
catch(Exception e) {
unexpectedException();
}
|
| public void | testConstructor()constructor initializes to given value
AtomicReference ai = new AtomicReference(one);
assertEquals(one,ai.get());
|
| public void | testConstructor2()default constructed initializes to null
AtomicReference ai = new AtomicReference();
assertNull(ai.get());
|
| public void | testGetAndSet()getAndSet returns previous value and sets to given value
AtomicReference ai = new AtomicReference(one);
assertEquals(one,ai.getAndSet(zero));
assertEquals(zero,ai.getAndSet(m10));
assertEquals(m10,ai.getAndSet(one));
|
| public void | testGetSet()get returns the last value set
AtomicReference ai = new AtomicReference(one);
assertEquals(one,ai.get());
ai.set(two);
assertEquals(two,ai.get());
ai.set(m3);
assertEquals(m3,ai.get());
|
| public void | testSerialization()a deserialized serialized atomic holds same value
AtomicReference l = new AtomicReference();
try {
l.set(one);
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000);
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout));
out.writeObject(l);
out.close();
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray());
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin));
AtomicReference r = (AtomicReference) in.readObject();
assertEquals(l.get(), r.get());
} catch(Exception e){
unexpectedException();
}
|
| public void | testToString()toString returns current value.
AtomicReference<Integer> ai = new AtomicReference<Integer>(one);
assertEquals(ai.toString(), one.toString());
ai.set(two);
assertEquals(ai.toString(), two.toString());
|
| public void | testWeakCompareAndSet()repeated weakCompareAndSet succeeds in changing value when equal
to expected
AtomicReference ai = new AtomicReference(one);
while(!ai.weakCompareAndSet(one,two));
while(!ai.weakCompareAndSet(two,m4));
assertEquals(m4,ai.get());
while(!ai.weakCompareAndSet(m4,seven));
assertEquals(seven,ai.get());
|
