$I = new ApiGuy($scenario);
    $I->wantTo('fail to create a new user by API');
    $params = [
        'email'       => 'some@email.com',
        'password'    => 'qwertyui',
        'language_id' => '1'
    ];
    $I->sendPOST('/1/user/create', $params);
    $I->seeResponseIsJson();
    $I->seeResponseCodeIs(412);
    $I->seeResponseContainsJson(['error' => 'true']);
    $I->seeResponseContainsJson(['code' => 412]);

There was 1 error:                                                         

Couldn't fail to create a new user by api (QwertyCept.php)



  [ErrorException]                                                         
  8 Array to string conversion                                             

    public function beforeStep(\Codeception\Event\Step $e) {
        $this->logger->info($e->getStep()->getHumanizedAction());
    }

    /**
     * Returns this step's arguments.
     *
     * @param  boolean $asString
     * @return array|string
     */
    public function getArguments($asString = FALSE)
    {
        if (!$asString) {
            return $this->arguments;
        } else {
            $arguments = $this->arguments;

            foreach ($arguments as $k => $argument) {
                if (!is_string($argument) and is_callable($argument, true)) {
                    $arguments[$k] = 'lambda function';
                    continue;
                }
                if (is_object($argument)) {
                    if (method_exists($argument, '__toString')) {
                        $arguments[$k] = $argument->__toString();
                    } elseif (isset($argument->__mocked)) {
                        $arguments[$k] = $this->formatClassName($argument->__mocked);
                    } else {
                        $arguments[$k] = $this->formatClassName(get_class($argument));
                    }
                    continue;
                }
                // if (settype($argument, 'string') === false) throw new \InvalidArgumentException('Argument can\'t be converted to string or serialized');
            }

            switch (count($arguments)) {
                case 0:
                    return '';
                case 1:
                    return '"' . $arguments[0] . '"';
                default:

                    return stripcslashes(json_encode($arguments));

            }
        }
    }

            switch (count($arguments)) {
                case 0:
                    return '';
                case 1:
                    if (is_array($arguments[0])) {
                        $arguments[0] = stripcslashes(json_encode($arguments[0]));
                    }
                    return '"' . $arguments[0] . '"';
                default: