--- jsr166/src/test/tck/AtomicReferenceFieldUpdaterTest.java	2010/09/16 00:52:49	1.19
+++ jsr166/src/test/tck/AtomicReferenceFieldUpdaterTest.java	2014/12/31 19:21:20	1.31
@@ -1,19 +1,21 @@
 /*
  * Written by Doug Lea with assistance from members of JCP JSR-166
  * Expert Group and released to the public domain, as explained at
- * http://creativecommons.org/licenses/publicdomain
+ * http://creativecommons.org/publicdomain/zero/1.0/
  * Other contributors include Andrew Wright, Jeffrey Hayes,
  * Pat Fisher, Mike Judd.
  */
 
-import java.util.concurrent.atomic.*;
-import junit.framework.*;
-import java.util.*;
+import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
+
+import junit.framework.Test;
+import junit.framework.TestSuite;
 
 public class AtomicReferenceFieldUpdaterTest extends JSR166TestCase {
     volatile Integer x = null;
     Object z;
     Integer w;
+    volatile int i;
 
     public static void main(String[] args) {
         junit.textui.TestRunner.run(suite());
@@ -22,77 +24,79 @@ public class AtomicReferenceFieldUpdater
         return new TestSuite(AtomicReferenceFieldUpdaterTest.class);
     }
 
+    AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer> updaterFor(String fieldName) {
+        return AtomicReferenceFieldUpdater.newUpdater
+            (AtomicReferenceFieldUpdaterTest.class, Integer.class, fieldName);
+    }
+
     /**
      * Construction with non-existent field throws RuntimeException
      */
     public void testConstructor() {
         try {
-            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
-                a = AtomicReferenceFieldUpdater.newUpdater
-                (AtomicReferenceFieldUpdaterTest.class, Integer.class, "y");
+            updaterFor("y");
             shouldThrow();
-        } catch (RuntimeException success) {}
+        } catch (RuntimeException success) {
+            assertNotNull(success.getCause());
+        }
     }
 
-
     /**
-     * construction with field not of given type throws RuntimeException
+     * construction with field not of given type throws ClassCastException
      */
     public void testConstructor2() {
         try {
-            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
-                a = AtomicReferenceFieldUpdater.newUpdater
-                (AtomicReferenceFieldUpdaterTest.class, Integer.class, "z");
+            updaterFor("z");
             shouldThrow();
-        } catch (RuntimeException success) {}
+        } catch (ClassCastException success) {}
     }
 
     /**
-     * Constructor with non-volatile field throws exception
+     * Constructor with non-volatile field throws IllegalArgumentException
      */
     public void testConstructor3() {
         try {
-            AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>
-                a = AtomicReferenceFieldUpdater.newUpdater
-                (AtomicReferenceFieldUpdaterTest.class, Integer.class, "w");
+            updaterFor("w");
+            shouldThrow();
+        } catch (IllegalArgumentException success) {}
+    }
+
+    /**
+     * Constructor with non-reference field throws ClassCastException
+     */
+    public void testConstructor4() {
+        try {
+            updaterFor("i");
             shouldThrow();
-        } catch (RuntimeException success) {}
+        } catch (ClassCastException success) {}
     }
 
     /**
-     *  get returns the last value set or assigned
+     * get returns the last value set or assigned
      */
     public void testGetSet() {
         AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
-        try {
-            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
-        } catch (RuntimeException ok) {
-            return;
-        }
+        a = updaterFor("x");
         x = one;
-        assertSame(one,a.get(this));
-        a.set(this,two);
-        assertSame(two,a.get(this));
-        a.set(this,m3);
-        assertSame(m3,a.get(this));
+        assertSame(one, a.get(this));
+        a.set(this, two);
+        assertSame(two, a.get(this));
+        a.set(this, m3);
+        assertSame(m3, a.get(this));
     }
 
     /**
-     *  get returns the last value lazySet by same thread
+     * get returns the last value lazySet by same thread
      */
     public void testGetLazySet() {
         AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
-        try {
-            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
-        } catch (RuntimeException ok) {
-            return;
-        }
+        a = updaterFor("x");
         x = one;
-        assertSame(one,a.get(this));
-        a.lazySet(this,two);
-        assertSame(two,a.get(this));
-        a.lazySet(this,m3);
-        assertSame(m3,a.get(this));
+        assertSame(one, a.get(this));
+        a.lazySet(this, two);
+        assertSame(two, a.get(this));
+        a.lazySet(this, m3);
+        assertSame(m3, a.get(this));
     }
 
     /**
@@ -100,11 +104,7 @@ public class AtomicReferenceFieldUpdater
      */
     public void testCompareAndSet() {
         AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
-        try {
-            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
-        } catch (RuntimeException ok) {
-            return;
-        }
+        a = updaterFor("x");
         x = one;
         assertTrue(a.compareAndSet(this, one, two));
         assertTrue(a.compareAndSet(this, two, m4));
@@ -112,7 +112,7 @@ public class AtomicReferenceFieldUpdater
         assertFalse(a.compareAndSet(this, m5, seven));
         assertFalse(seven == a.get(this));
         assertTrue(a.compareAndSet(this, m4, seven));
-        assertSame(seven,a.get(this));
+        assertSame(seven, a.get(this));
     }
 
     /**
@@ -122,11 +122,7 @@ public class AtomicReferenceFieldUpdater
     public void testCompareAndSetInMultipleThreads() throws Exception {
         x = one;
         final AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
-        try {
-            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
-        } catch (RuntimeException ok) {
-            return;
-        }
+        a = updaterFor("x");
 
         Thread t = new Thread(new CheckedRunnable() {
             public void realRun() {
@@ -138,7 +134,7 @@ public class AtomicReferenceFieldUpdater
         assertTrue(a.compareAndSet(this, one, two));
         t.join(LONG_DELAY_MS);
         assertFalse(t.isAlive());
-        assertSame(a.get(this), three);
+        assertSame(three, a.get(this));
     }
 
     /**
@@ -147,17 +143,13 @@ public class AtomicReferenceFieldUpdater
      */
     public void testWeakCompareAndSet() {
         AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
-        try {
-            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
-        } catch (RuntimeException ok) {
-            return;
-        }
+        a = updaterFor("x");
         x = one;
-        while (!a.weakCompareAndSet(this,one,two));
-        while (!a.weakCompareAndSet(this,two,m4));
-        assertSame(m4,a.get(this));
-        while (!a.weakCompareAndSet(this,m4,seven));
-        assertSame(seven,a.get(this));
+        do {} while (!a.weakCompareAndSet(this, one, two));
+        do {} while (!a.weakCompareAndSet(this, two, m4));
+        assertSame(m4, a.get(this));
+        do {} while (!a.weakCompareAndSet(this, m4, seven));
+        assertSame(seven, a.get(this));
     }
 
     /**
@@ -165,15 +157,11 @@ public class AtomicReferenceFieldUpdater
      */
     public void testGetAndSet() {
         AtomicReferenceFieldUpdater<AtomicReferenceFieldUpdaterTest, Integer>a;
-        try {
-            a = AtomicReferenceFieldUpdater.newUpdater(AtomicReferenceFieldUpdaterTest.class, Integer.class, "x");
-        } catch (RuntimeException ok) {
-            return;
-        }
+        a = updaterFor("x");
         x = one;
-        assertSame(one,a.getAndSet(this, zero));
-        assertSame(zero,a.getAndSet(this,m10));
-        assertSame(m10,a.getAndSet(this,1));
+        assertSame(one, a.getAndSet(this, zero));
+        assertSame(zero, a.getAndSet(this, m10));
+        assertSame(m10, a.getAndSet(this, 1));
     }
 
 }