Add isTrue/isFalse methods

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@830029 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/commons/lang/mutable/MutableBoolean.java

@@ -96,6 +96,25 @@ public void setValue(Boolean value) {
         this.value = value.booleanValue();
     }
 
+    //-----------------------------------------------------------------------
+    /**
+     * Checks if the current value is <code>true</code>.
+     * 
+     * @return <code>true</code> if the current value is <code>true</code>
+     */
+    public boolean isTrue() {
+        return value == true;
+    }
+
+    /**
+     * Checks if the current value is <code>false</code>.
+     * 
+     * @return <code>true</code> if the current value is <code>false</code>
+     */
+    public boolean isFalse() {
+        return value == false;
+    }
+
     //-----------------------------------------------------------------------
     /**
      * Returns the value of this MutableBoolean as a boolean.

src/test/org/apache/commons/lang/mutable/MutableBooleanTest.java

@@ -101,10 +101,14 @@ public void testGetSet() {
         final MutableBoolean mutBool = new MutableBoolean(false);
         assertEquals(Boolean.FALSE, mutBool.toBoolean());
         assertEquals(false, mutBool.booleanValue());
+        assertEquals(true, mutBool.isFalse());
+        assertEquals(false, mutBool.isTrue());
 
         mutBool.setValue(Boolean.TRUE);
         assertEquals(Boolean.TRUE, mutBool.toBoolean());
         assertEquals(true, mutBool.booleanValue());
+        assertEquals(false, mutBool.isFalse());
+        assertEquals(true, mutBool.isTrue());
 
         mutBool.setValue(false);
         assertEquals(false, mutBool.booleanValue());