@Test
public void testFromJsonString() {

	WrenchStamped p = WrenchStamped.fromJsonString(w1.toString());
	assertEquals(w1.toString(), p.toString());
	assertEquals(w1.toJsonObject(), p.toJsonObject());
	assertEquals(w1.getMessageType(), p.getMessageType());
	assertEquals(w1.getHeader(), p.getHeader());
	assertEquals(w1.getWrench(), p.getWrench());
	assertNotSame(w1, p);
	assertNotSame(w1.toString(), p.toString());
	assertNotSame(w1.toJsonObject(), p.toJsonObject());
}