public function testCanWiteOffsetDateTime() { $dateTime = new \EcEnglish\ApiClient\OffsetDateTime(3600, new DateTime('2015-03-02 13:22:33.876543', new \DateTimeZone('Etc/UTC'))); $written = Primitives::WriteOffsetDateTime($dateTime); $this->assertEquals('2015-03-02T13:22:33.876543+01', $written); }