Text nonempty2 = new Text("value2");
parent.appendChild(empty);
parent.appendChild(nonempty);
parent.appendChild(nonempty2);
Nodes result = parent.query("node()");
assertEquals(3, result.size());
Nodes result2 = parent.query("/*[count(node())=1]");
assertEquals(1, result2.size());
assertEquals(parent, result2.get(0));