--- jsr166/src/test/tck/AtomicBooleanTest.java	2003/09/20 18:20:07	1.4
+++ jsr166/src/test/tck/AtomicBooleanTest.java	2009/11/02 20:28:31	1.10
@@ -1,8 +1,9 @@
 /*
- * Written by members of JCP JSR-166 Expert Group and released to the
- * public domain. Use, modify, and redistribute this code in any way
- * without acknowledgement. Other contributors include Andrew Wright,
- * Jeffrey Hayes, Pat Fischer, Mike Judd.
+ * 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
+ * Other contributors include Andrew Wright, Jeffrey Hayes,
+ * Pat Fisher, Mike Judd.
  */
 
 import junit.framework.*;
@@ -18,7 +19,7 @@ public class AtomicBooleanTest extends J
     }
 
     /**
-     *
+     * constructor initializes to given value
      */
     public void testConstructor() {
         AtomicBoolean ai = new AtomicBoolean(true);
@@ -26,7 +27,7 @@ public class AtomicBooleanTest extends J
     }
 
     /**
-     *
+     * default constructed initializes to false
      */
     public void testConstructor2() {
         AtomicBoolean ai = new AtomicBoolean();
@@ -34,7 +35,7 @@ public class AtomicBooleanTest extends J
     }
 
     /**
-     *
+     * get returns the last value set
      */
     public void testGetSet() {
         AtomicBoolean ai = new AtomicBoolean(true);
@@ -43,10 +44,24 @@ public class AtomicBooleanTest extends J
 	assertEquals(false,ai.get());
 	ai.set(true);
 	assertEquals(true,ai.get());
-	
+
+    }
+
+    /**
+     * get returns the last value lazySet in same thread
+     */
+    public void testGetLazySet() {
+        AtomicBoolean ai = new AtomicBoolean(true);
+	assertEquals(true,ai.get());
+	ai.lazySet(false);
+	assertEquals(false,ai.get());
+	ai.lazySet(true);
+	assertEquals(true,ai.get());
+
     }
+
     /**
-     *
+     * compareAndSet succeeds in changing value if equal to expected else fails
      */
     public void testCompareAndSet() {
         AtomicBoolean ai = new AtomicBoolean(true);
@@ -61,7 +76,29 @@ public class AtomicBooleanTest extends J
     }
 
     /**
-     *
+     * compareAndSet in one thread enables another waiting for value
+     * to succeed
+     */
+    public void testCompareAndSetInMultipleThreads() {
+        final AtomicBoolean ai = new AtomicBoolean(true);
+        Thread t = new Thread(new Runnable() {
+                public void run() {
+                    while(!ai.compareAndSet(false, true)) Thread.yield();
+                }});
+        try {
+            t.start();
+            assertTrue(ai.compareAndSet(true, false));
+            t.join(LONG_DELAY_MS);
+            assertFalse(t.isAlive());
+        }
+        catch(Exception e) {
+            unexpectedException();
+        }
+    }
+
+    /**
+     * repeated weakCompareAndSet succeeds in changing value when equal
+     * to expected
      */
     public void testWeakCompareAndSet() {
         AtomicBoolean ai = new AtomicBoolean(true);
@@ -74,7 +111,7 @@ public class AtomicBooleanTest extends J
     }
 
     /**
-     *
+     * getAndSet returns previous value and sets to given value
      */
     public void testGetAndSet() {
         AtomicBoolean ai = new AtomicBoolean(true);
@@ -85,7 +122,7 @@ public class AtomicBooleanTest extends J
     }
 
     /**
-     *
+     * a deserialized serialized atomic holds same value
      */
     public void testSerialization() {
         AtomicBoolean l = new AtomicBoolean();
@@ -107,5 +144,14 @@ public class AtomicBooleanTest extends J
         }
     }
 
+    /**
+     * toString returns current value.
+     */
+    public void testToString() {
+        AtomicBoolean ai = new AtomicBoolean();
+        assertEquals(ai.toString(), Boolean.toString(false));
+        ai.set(true);
+        assertEquals(ai.toString(), Boolean.toString(true));
+    }
 
 }