assert Float.valueOf(value).equals(wrapper.convert(Float.TYPE));
value = "";
wrapper.setElement(createElement("number", value));
assert null == wrapper.convert(Short.class);
assert null == wrapper.convert(Integer.class);
assert null == wrapper.convert(Long.class);
assert null == wrapper.convert(Float.class);
assert null == wrapper.convert(Double.class);
assert null == wrapper.convert(Byte.class);