Hi folks,
  I have written a translation plugin to be used by a flow and I tried to write test class for the same but I keep getting error when i run the test. Below is my class.. Please help me with this.
global class FoodSafetyCriteriaNotMetPlugin implements Process.Plugin{
    global Process.PluginResult invoke(Process.PluginRequest request){
        String  apiName = (String)request.inputParameters.get('Criteria_Not_Met_Field_API_Name');
        System.debug('Apiname ' +apiName);
        Id      recordId = (Id) request.inputParameters.get('QA_Id');
        String queryString = 'SELECT toLabel('+apiName+') FROM Food_Safety_QA__c WHERE Id = :recordId LIMIT 1';
        List<Food_Safety_QA__c> listQA = Database.query(queryString);
        Food_Safety_QA__c objQA = listQA[0];
        String returnString = (string)objQA.get(apiName);
        System.debug('Return String is :' +returnString);
        Map<String,Object> result = new Map<String,Object>();
        result.put('Translated_Value', returnString);
        return new Process.PluginResult(result);
        
    }
    global Process.PluginDescribeResult describe() { 
      Process.PluginDescribeResult result = new Process.PluginDescribeResult(); 
      result.Name = 'Get the Translated Criteria Not Met';
      result.inputParameters = new List<Process.PluginDescribeResult.InputParameter>{ 
            new Process.PluginDescribeResult.InputParameter('Criteria_Not_Met_Field_API_Name',Process.PluginDescribeResult.ParameterType.STRING,true),
            new Process.PluginDescribeResult.InputParameter('QA_Id',Process.PluginDescribeResult.ParameterType.STRING,true)
         }; 
      result.outputParameters = new 
         List<Process.PluginDescribeResult.OutputParameter>{              
            new Process.PluginDescribeResult.OutputParameter('Translated_Value',Process.PluginDescribeResult.ParameterType.STRING)
         }; 
      return result; 
   }
}