public function testCodeIsNew() { $C = new Codes(); $not_new_code = $C->generateCode(); $C->codeIsNew($not_new_code); $new_code = $C->generateCode(); // && $C->codeIsNew($new_code) $existing_code = 'RICK9TQX4H'; $this->assertTrue($C->codeIsNew($existing_code) == false); }