@Test
 public void testNot() {
   DoubleCondition condition = new DoubleCondition("<=", new Double(11), true);
   assertTrue(condition.compare(null));
   assertTrue(condition.compare(new Double(12)));
   assertFalse(condition.compare(new Double(11)));
 }
 @Test
 public void testLessThan() {
   DoubleCondition condition = new DoubleCondition("<", new Double(11), false);
   assertFalse(condition.compare(null));
   assertFalse(condition.compare(new Double(11)));
   assertTrue(condition.compare(new Double(10)));
 }
 @Test
 public void testGreaterEqual() {
   DoubleCondition condition = new DoubleCondition(">=", new Double(11), false);
   assertFalse(condition.compare(null));
   assertFalse(condition.compare(new Double(10)));
   assertTrue(condition.compare(new Double(11)));
 }
 @Test
 public void testNotEquals() {
   DoubleCondition condition = new DoubleCondition("!=", new Double(10), false);
   assertTrue(condition.compare(null));
   assertFalse(condition.compare(new Double(10)));
   assertTrue(condition.compare(new Double(11)));
 }
  @Test
  public void testEquals() {
    DoubleCondition condition = new DoubleCondition("==", new Double(10), false);
    assertFalse(condition.compare(null));
    assertTrue(condition.compare(new Double(10)));
    assertFalse(condition.compare(new Double(11)));

    // Prohibited by Factory
    // DoubleCondition condition = new DoubleCondition("==", null, false);
  }
 @Test
 public void testIsNull() {
   DoubleCondition condition = new DoubleCondition("IS NULL", null, false);
   assertTrue(condition.compare(null));
   assertFalse(condition.compare(new Double(10)));
 }