diff --git a/src/test/org/apache/commons/lang/mutable/MutableByteTest.java b/src/test/org/apache/commons/lang/mutable/MutableByteTest.java
index dca42d30e..480f8c1b7 100755
--- a/src/test/org/apache/commons/lang/mutable/MutableByteTest.java
+++ b/src/test/org/apache/commons/lang/mutable/MutableByteTest.java
@@ -23,7 +23,7 @@ import junit.textui.TestRunner;
 /**
  * JUnit tests.
  * 
- * @version $Id: MutableByteTest.java,v 1.2 2004/07/07 23:50:28 scolebourne Exp $
+ * @version $Id: MutableByteTest.java,v 1.3 2004/12/26 02:35:47 bayard Exp $
  * @see MutableByte
  */
 public class MutableByteTest extends TestCase {
@@ -128,6 +128,15 @@ public class MutableByteTest extends TestCase {
         } catch (ClassCastException ex) {}
     }
 
+    public void testPrimitiveValues() {
+        MutableByte mutNum = new MutableByte( (byte) 1 );
+        
+        assertEquals( 1.0F, mutNum.floatValue(), 0 );
+        assertEquals( 1.0, mutNum.doubleValue(), 0 );
+        assertEquals( 1, mutNum.intValue() );
+        assertEquals( 1L, mutNum.longValue() );
+    }
+
     public void testToString() {
         assertEquals("0", new MutableByte((byte) 0).toString());
         assertEquals("10", new MutableByte((byte) 10).toString());
diff --git a/src/test/org/apache/commons/lang/mutable/MutableDoubleTest.java b/src/test/org/apache/commons/lang/mutable/MutableDoubleTest.java
index 6d669ff0f..f682a9f62 100755
--- a/src/test/org/apache/commons/lang/mutable/MutableDoubleTest.java
+++ b/src/test/org/apache/commons/lang/mutable/MutableDoubleTest.java
@@ -23,7 +23,7 @@ import junit.textui.TestRunner;
 /**
  * JUnit tests.
  * 
- * @version $Id: MutableDoubleTest.java,v 1.2 2004/07/07 23:50:28 scolebourne Exp $
+ * @version $Id: MutableDoubleTest.java,v 1.3 2004/12/26 02:35:47 bayard Exp $
  * @see MutableDouble
  */
 public class MutableDoubleTest extends TestCase {
@@ -139,6 +139,14 @@ public class MutableDoubleTest extends TestCase {
         } catch (ClassCastException ex) {}
     }
 
+    public void testPrimitiveValues() {
+        MutableDouble mutNum = new MutableDouble(1.7);
+        
+        assertEquals( 1.7F, mutNum.floatValue(), 0 );
+        assertEquals( 1, mutNum.intValue() );
+        assertEquals( 1L, mutNum.longValue() );
+    }
+
     public void testToString() {
         assertEquals("0.0", new MutableDouble(0d).toString());
         assertEquals("10.0", new MutableDouble(10d).toString());
diff --git a/src/test/org/apache/commons/lang/mutable/MutableFloatTest.java b/src/test/org/apache/commons/lang/mutable/MutableFloatTest.java
index 1a38cf06e..dc54b122e 100755
--- a/src/test/org/apache/commons/lang/mutable/MutableFloatTest.java
+++ b/src/test/org/apache/commons/lang/mutable/MutableFloatTest.java
@@ -23,7 +23,7 @@ import junit.textui.TestRunner;
 /**
  * JUnit tests.
  * 
- * @version $Id: MutableFloatTest.java,v 1.2 2004/07/07 23:50:28 scolebourne Exp $
+ * @version $Id: MutableFloatTest.java,v 1.3 2004/12/26 02:35:47 bayard Exp $
  * @see MutableFloat
  */
 public class MutableFloatTest extends TestCase {
@@ -139,6 +139,14 @@ public class MutableFloatTest extends TestCase {
         } catch (ClassCastException ex) {}
     }
 
+    public void testPrimitiveValues() {
+        MutableFloat mutNum = new MutableFloat(1.7F);
+        
+        assertEquals( 1, mutNum.intValue() );
+        assertEquals( 1.7, mutNum.doubleValue(), 0.00001 );
+        assertEquals( 1L, mutNum.longValue() );
+    }
+
     public void testToString() {
         assertEquals("0.0", new MutableFloat(0f).toString());
         assertEquals("10.0", new MutableFloat(10f).toString());
diff --git a/src/test/org/apache/commons/lang/mutable/MutableIntTest.java b/src/test/org/apache/commons/lang/mutable/MutableIntTest.java
index 1a788e760..d964139a2 100644
--- a/src/test/org/apache/commons/lang/mutable/MutableIntTest.java
+++ b/src/test/org/apache/commons/lang/mutable/MutableIntTest.java
@@ -23,7 +23,7 @@ import junit.textui.TestRunner;
 /**
  * JUnit tests.
  * 
- * @version $Id: MutableIntTest.java,v 1.1 2004/07/07 23:50:28 scolebourne Exp $
+ * @version $Id: MutableIntTest.java,v 1.2 2004/12/26 02:35:47 bayard Exp $
  * @see MutableInt
  */
 public class MutableIntTest extends TestCase {
@@ -128,6 +128,14 @@ public class MutableIntTest extends TestCase {
         } catch (ClassCastException ex) {}
     }
 
+    public void testPrimitiveValues() {
+        MutableInt mutNum = new MutableInt(1);
+        
+        assertEquals( 1.0F, mutNum.floatValue(), 0 );
+        assertEquals( 1.0, mutNum.doubleValue(), 0 );
+        assertEquals( 1L, mutNum.longValue() );
+    }
+
     public void testToString() {
         assertEquals("0", new MutableInt(0).toString());
         assertEquals("10", new MutableInt(10).toString());
diff --git a/src/test/org/apache/commons/lang/mutable/MutableLongTest.java b/src/test/org/apache/commons/lang/mutable/MutableLongTest.java
index 5a7894739..06ad37fa5 100755
--- a/src/test/org/apache/commons/lang/mutable/MutableLongTest.java
+++ b/src/test/org/apache/commons/lang/mutable/MutableLongTest.java
@@ -23,7 +23,7 @@ import junit.textui.TestRunner;
 /**
  * JUnit tests.
  * 
- * @version $Id: MutableLongTest.java,v 1.2 2004/07/07 23:50:28 scolebourne Exp $
+ * @version $Id: MutableLongTest.java,v 1.3 2004/12/26 02:35:47 bayard Exp $
  * @see MutableLong
  */
 public class MutableLongTest extends TestCase {
@@ -128,6 +128,13 @@ public class MutableLongTest extends TestCase {
         } catch (ClassCastException ex) {}
     }
 
+    public void testPrimitiveValues() {
+        MutableLong mutNum = new MutableLong(1L);
+
+        assertEquals( 1.0F, mutNum.floatValue(), 0 );
+        assertEquals( 1.0, mutNum.doubleValue(), 0 );
+    }
+
     public void testToString() {
         assertEquals("0", new MutableLong(0).toString());
         assertEquals("10", new MutableLong(10).toString());
diff --git a/src/test/org/apache/commons/lang/mutable/MutableObjectTest.java b/src/test/org/apache/commons/lang/mutable/MutableObjectTest.java
index bf0033d5b..2d5d61aea 100644
--- a/src/test/org/apache/commons/lang/mutable/MutableObjectTest.java
+++ b/src/test/org/apache/commons/lang/mutable/MutableObjectTest.java
@@ -23,7 +23,7 @@ import junit.textui.TestRunner;
 /**
  * JUnit tests.
  * 
- * @version $Id: MutableObjectTest.java,v 1.1 2004/07/08 00:02:35 scolebourne Exp $
+ * @version $Id: MutableObjectTest.java,v 1.2 2004/12/26 02:35:47 bayard Exp $
  * @see MutableShort
  */
 public class MutableObjectTest extends TestCase {
@@ -99,6 +99,7 @@ public class MutableObjectTest extends TestCase {
     public void testToString() {
         assertEquals("HI", new MutableObject("HI").toString());
         assertEquals("10.0", new MutableObject(new Double(10)).toString());
+        assertEquals("null", new MutableObject(null).toString());
     }
 
 }
diff --git a/src/test/org/apache/commons/lang/mutable/MutableShortTest.java b/src/test/org/apache/commons/lang/mutable/MutableShortTest.java
index 7c21231ff..887ea7c4b 100755
--- a/src/test/org/apache/commons/lang/mutable/MutableShortTest.java
+++ b/src/test/org/apache/commons/lang/mutable/MutableShortTest.java
@@ -23,7 +23,7 @@ import junit.textui.TestRunner;
 /**
  * JUnit tests.
  * 
- * @version $Id: MutableShortTest.java,v 1.2 2004/07/07 23:50:28 scolebourne Exp $
+ * @version $Id: MutableShortTest.java,v 1.3 2004/12/26 02:35:47 bayard Exp $
  * @see MutableShort
  */
 public class MutableShortTest extends TestCase {
@@ -128,6 +128,15 @@ public class MutableShortTest extends TestCase {
         } catch (ClassCastException ex) {}
     }
 
+    public void testPrimitiveValues() {
+        MutableShort mutNum = new MutableShort( (short) 1 );
+        
+        assertEquals( 1.0F, mutNum.floatValue(), 0 );
+        assertEquals( 1.0, mutNum.doubleValue(), 0 );
+        assertEquals( 1, mutNum.intValue() );
+        assertEquals( 1L, mutNum.longValue() );
+    }
+
     public void testToString() {
         assertEquals("0", new MutableShort((short) 0).toString());
         assertEquals("10", new MutableShort((short) 10).toString());