public function getTimestampsAndExpected() {
return array(
array(
array(
1,
2,
3,
),
3,
),
array(
array(
5,
4,
3,
),
5,
),
array(
array(
3,
8,
5,
),
8,
),
array(
array(
3,
8,
null,
),
8,
),
);
}