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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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*/ |
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|
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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|
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public class ExchangerTest extends TestCase{ |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(ExchangerTest.class); |
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} |
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|
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private static long SHORT_DELAY_MS = 100; |
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private static long MEDIUM_DELAY_MS = 1000; |
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private static long LONG_DELAY_MS = 10000; |
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|
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private final static Integer one = new Integer(1); |
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private final static Integer two = new Integer(2); |
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|
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public void testExchange(){ |
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final Exchanger e = new Exchanger(); |
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Thread t1 = new Thread(new Runnable(){ |
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public void run(){ |
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try{ |
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Object v = e.exchange(one); |
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assertEquals(v, two); |
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Object w = e.exchange(v); |
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assertEquals(w, one); |
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}catch(InterruptedException e){ |
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fail("unexpected exception"); |
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} |
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} |
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}); |
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Thread t2 = new Thread(new Runnable(){ |
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public void run(){ |
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try{ |
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Object v = e.exchange(two); |
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assertEquals(v, one); |
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Object w = e.exchange(v); |
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assertEquals(w, two); |
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}catch(InterruptedException e){ |
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fail("unexpected exception"); |
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} |
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} |
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}); |
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try { |
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t1.start(); |
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t2.start(); |
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t1.join(); |
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t2.join(); |
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} catch(InterruptedException ex) { |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testExchange1_InterruptedException(){ |
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final Exchanger e = new Exchanger(); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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try{ |
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e.exchange(one); |
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fail("should throw"); |
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}catch(InterruptedException success){ |
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} |
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} |
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}); |
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try{ |
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t.start(); |
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Thread.sleep(SHORT_DELAY_MS); |
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t.interrupt(); |
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t.join(); |
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} catch(InterruptedException ex) { |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testExchange2_InterruptedException(){ |
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final Exchanger e = new Exchanger(); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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try{ |
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e.exchange(null, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS); |
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fail("should throw"); |
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} catch(InterruptedException success){ |
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} catch(Exception e2){ |
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fail("should throw IE"); |
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} |
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} |
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}); |
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try{ |
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t.start(); |
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t.interrupt(); |
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t.join(); |
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} catch(InterruptedException ex){ |
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fail("unexpected exception"); |
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} |
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} |
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|
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public void testExchange3_TimeOutException(){ |
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final Exchanger e = new Exchanger(); |
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Thread t = new Thread(new Runnable() { |
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public void run(){ |
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try{ |
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e.exchange(null, SHORT_DELAY_MS, TimeUnit.MILLISECONDS); |
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fail("should throw"); |
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}catch(TimeoutException success){} |
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catch(InterruptedException e2){ |
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fail("should throw TOE"); |
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} |
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} |
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}); |
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try{ |
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t.start(); |
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t.join(); |
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} catch(InterruptedException ex){ |
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fail("unexpected exception"); |
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} |
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} |
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} |
