/**
* Returns true if the data is to old and needs an update
*
* @see DataBackend::getLastUpdate()
* @return bool
*/
public function isOutdated(DataBackend $backend)
{
/*
* The following code creates a sorted list with the release months (update month - $relaseThreshold)
* and the current month. To build that threshold date simply pick the month before the current month from
* that list.
*
* Note that the second parameter of the date() calls is there on purpose. This allows
* to mock time() for testing.
*/
/*
* The current month gets an increment of 0.5 for the case that the current month is a
* release month (e.g. the list will look (2, 2.5, 5, 8, 11)).
*/
$currentMonth = date("n", time()) + 0.5;
$monthList = array($currentMonth);
foreach (self::$updateMonths as $month) {
$releaseMonth = $month - self::$relaseThreshold;
$monthList[] = $releaseMonth;
}
sort($monthList);
// You have now something like (2, 2.5, 5, 8, 11).
// Now add the cycle between the last and the first month(11, 2, 3.5, 5, 8, 11, 2).
$monthList[] = self::$updateMonths[0] - self::$relaseThreshold;
// this is acually not needed.
array_unshift($monthList, self::$updateMonths[count(self::$updateMonths) - 1] - self::$relaseThreshold);
$index = array_search($currentMonth, $monthList);
assert($index > 0);
$previousIndex = $index - 1;
$thresholdMonth = $monthList[$previousIndex];
// flip the year if the threshold was in the last year.
$year = $thresholdMonth > $currentMonth ? date("Y", time()) - 1 : date("Y", time());
$threshold = mktime(0, 0, 0, $thresholdMonth, 1, $year);
return $backend->getLastUpdate() < $threshold;
}
/**
* @dataProvider provideInstallationBackends
*/
public function testLastUpdate(DataBackend $backend)
{
$now = time();
$backend->install();
$update = $backend->getLastUpdate();
$this->assertGreaterThanOrEqual($now, $update);
$now = time();
$backend->update();
$update = $backend->getLastUpdate();
$this->assertGreaterThanOrEqual($now, $update);
$backend->uninstall();
}
