### Question:
BooleanValue extends Value { @Override StringValue toStringValue () { return new StringValue (toString ()); } BooleanValue(boolean value);   BooleanValue(String text); @Override String toString();  }### Answer:
@Test public void testToStringValue () { assertEquals ("true", mTrueValue.toStringValue ().toString ()); assertEquals ("false", mFalseValue.toStringValue ().toString ()); }