public function testDateify() { $time = new DateTime("2000-01-01 11:11:11.111111"); $time->dateify(); $this->assertSame("2000-01-01 00:00:00.000000", $time->format(DateTime::POSTGRES_TIMESTAMP_WITHOUT_TIME_ZONE)); $time = new DateTime('infinity'); $time->dateify(); $this->assertTrue($time->isInfinity()); }