public function test_echeckRedeposit_merchantData() { $hash_in = array('id' => 'id', 'litleTxnId' => '123123', 'merchantData' => array('campaign' => 'camping')); $hash_out = Transactions::createEcheckRedepositHash($hash_in); $this->assertEquals($hash_in, array_intersect($hash_in, $hash_out)); }