Asserts the results as expected regardless of order.
array $expected: Array of expected entity IDs.
protected function assertResults($expected) {
$this
->assertIdentical(count($this->queryResults), count($expected));
foreach ($expected as $value) {
// This also tests whether $this->queryResults[$value] is even set at all.
$this
->assertIdentical($this->queryResults[$value], $value);
}
}