DbDatetimeTest.php
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<?php
class DbDatetimeTest extends FunctionalTest {
protected static $fixture_file = 'DbDatetimeTest.yml';
protected $extraDataObjects = array('DbDatetimeTest_Team');
protected $offset;
protected $adapter;
/**
* Check if dates match more or less. This takes into the account the db query
* can overflow to the next second giving offset readings.
*/
private function matchesRoughly($date1, $date2, $comment = '', $offset) {
$allowedDifference = 5 + abs($offset); // seconds
$time1 = is_numeric($date1) ? $date1 : strtotime($date1);
$time2 = is_numeric($date2) ? $date2 : strtotime($date2);
$this->assertTrue(abs($time1-$time2)<$allowedDifference,
$comment . " (times differ by " . abs($time1-$time2) . " seconds)");
}
private function getDbNow() {
$query = 'SELECT ' . $this->adapter->formattedDatetimeClause('now', '%U');
return DB::query($query)->value();
}
/**
* Needs to be run within a test*() context.
*
* @return Int Offset in seconds
*/
private function checkPreconditions() {
// number of seconds of php and db time are out of sync
$offset = time() - strtotime(DB::query('SELECT ' . DB::getConn()->now())->value());
$threshold = 5; // seconds
if($offset > 5) {
$this->markTestSkipped('The time of the database is out of sync with the webserver by '
. abs($offset) . ' seconds.');
}
if(method_exists($this->adapter, 'supportsTimezoneOverride') && !$this->adapter->supportsTimezoneOverride()) {
$this->markTestSkipped("Database doesn't support timezone overrides");
}
return $offset;
}
public function setUp() {
parent::setUp();
$this->adapter = DB::getConn();
}
public function testCorrectNow() {
$offset = $this->checkPreconditions();
$clause = $this->adapter->formattedDatetimeClause('now', '%U');
$result = DB::query('SELECT ' . $clause)->value();
$this->assertRegExp('/^\d*$/', (string) $result);
$this->assertTrue($result>0);
}
public function testDbDatetimeFormat() {
$offset = $this->checkPreconditions();
$clause = $this->adapter->formattedDatetimeClause('1973-10-14 10:30:00', '%H:%i, %d/%m/%Y');
$result = DB::query('SELECT ' . $clause)->value();
$this->matchesRoughly($result, date('H:i, d/m/Y', strtotime('1973-10-14 10:30:00')), 'nice literal time',
$offset);
$clause = $this->adapter->formattedDatetimeClause('now', '%d');
$result = DB::query('SELECT ' . $clause)->value();
$this->matchesRoughly($result, date('d', $this->getDbNow()), 'todays day', $offset);
$clause = $this->adapter->formattedDatetimeClause('"Created"', '%U') . ' AS test FROM "DbDateTimeTest_Team"';
$result = DB::query('SELECT ' . $clause)->value();
$this->matchesRoughly($result, strtotime(DataObject::get_one('DbDateTimeTest_Team')->Created),
'fixture ->Created as timestamp', $offset);
}
public function testDbDatetimeInterval() {
$offset = $this->checkPreconditions();
$clause = $this->adapter->datetimeIntervalClause('1973-10-14 10:30:00', '+18 Years');
$result = DB::query('SELECT ' . $clause)->value();
$this->matchesRoughly($result, '1991-10-14 10:30:00', 'add 18 years', $offset);
$clause = $this->adapter->datetimeIntervalClause('now', '+1 Day');
$result = DB::query('SELECT ' . $clause)->value();
$this->matchesRoughly($result, date('Y-m-d H:i:s', strtotime('+1 Day', $this->getDbNow())), 'tomorrow',
$offset);
$query = new SQLQuery();
$query->setSelect(array());
$query->selectField($this->adapter->datetimeIntervalClause('"Created"', '-15 Minutes'), 'test')
->setFrom('"DbDateTimeTest_Team"')
->setLimit(1);
$result = $query->execute()->value();
$this->matchesRoughly($result,
date('Y-m-d H:i:s', strtotime(DataObject::get_one('DbDateTimeTest_Team')->Created) - 900),
'15 Minutes before creating fixture', $offset);
}
public function testDbDatetimeDifference() {
$offset = $this->checkPreconditions();
$clause = $this->adapter->datetimeDifferenceClause('1974-10-14 10:30:00', '1973-10-14 10:30:00');
$result = DB::query('SELECT ' . $clause)->value();
$this->matchesRoughly($result/86400, 365, '1974 - 1973 = 365 * 86400 sec', $offset);
$clause = $this->adapter->datetimeDifferenceClause(date('Y-m-d H:i:s', strtotime('-15 seconds')), 'now');
$result = DB::query('SELECT ' . $clause)->value();
$this->matchesRoughly($result, -15, '15 seconds ago - now', $offset);
$clause = $this->adapter->datetimeDifferenceClause('now',
$this->adapter->datetimeIntervalClause('now', '+45 Minutes'));
$result = DB::query('SELECT ' . $clause)->value();
$this->matchesRoughly($result, -45 * 60, 'now - 45 minutes ahead', $offset);
$query = new SQLQuery();
$query->setSelect(array());
$query->selectField($this->adapter->datetimeDifferenceClause('"LastEdited"', '"Created"'), 'test')
->setFrom('"DbDateTimeTest_Team"')
->setLimit(1);
$result = $query->execute()->value();
$lastedited = Dataobject::get_one('DbDateTimeTest_Team')->LastEdited;
$created = Dataobject::get_one('DbDateTimeTest_Team')->Created;
$this->matchesRoughly($result, strtotime($lastedited) - strtotime($created),
'age of HomePage record in seconds since unix epoc', $offset);
}
}
class DbDateTimeTest_Team extends DataObject implements TestOnly {
private static $db = array(
'Title' => 'Varchar'
);
}