assertEquals(node(2,1), e.node());
assertTrue(e.nextNode());
assertEquals(node(2,5), e.node());
assertTrue(e.nextDocument());
assertTrue(e.nextNode());
assertEquals(node(5,3,1), e.node());
assertTrue(e.nextNode());
assertEquals(node(5,3,6,3), e.node());
assertTrue(e.nextNode());
assertEquals(node(5,3,6,5), e.node());
assertTrue(e.nextNode());