assertEquals( true, expr.convertToBoolean(true) );
assertEquals( false, expr.convertToBoolean(new Boolean(false)));
assertEquals( true, expr.convertToBoolean(new Boolean(true)));
assertEquals( true, expr.convertToBoolean(new Long(-1)));
assertEquals( false, expr.convertToBoolean(new Long(0)));
assertEquals( true, expr.convertToBoolean(new Long(1)));
assertEquals( true, expr.convertToBoolean(new Double(-1.0)));
assertEquals( false, expr.convertToBoolean(new Double(0.0)));
assertEquals( true, expr.convertToBoolean(new Double(1.0)));