assertEquals(zExpected, z);
Integer expectedCid = childZToCid.get(z);
assertNotNull(expectedCid);
assertEquals(expectedCid.intValue(), cid);
assertEquals(pid(expectedCid), pid);
assertEquals(expectedHKey(pid, cid), row.hKey().toString());
long distance = abs(zExpected - zStart);
assertTrue(distance >= previousDistance);
previousDistance = distance;
actualIdByDistance.add(cid);
}