Hi,

I am constantly getting this error in a test class no matter how many changes I make or how many times I try to get the current page Id. Guess am having trouble writing the correct syntax or order. Any help will be greatly appreciated. My visualforce page is creating a record and then creating or updating child records for the record created using csv upload.
This is my controller code 
public with sharing class FileUploader1
{
  
    private final Sobject parent;
    public string nameFile{get; set;}
    public Blob contentFile{get;set;}
    //public String theId;
    public List<gii__InventoryAdjustment__c> adj;
    public List<gii__ProductSerial__c> accstoupload;
    String[] filelines = new String[]{};
    private ApexPages.standardController standardController;
   
    public String theId = ApexPages.currentPage().getParameters().get('id');
   
    public FileUploader1(ApexPages.StandardController stdcontroller) {
          }
   
  //public FileUploader1(string n, blob c) {
    //this.namefile = n;
    //this.contentfile = c;
    //}
       
    public Pagereference ReadFile()
    {           
        nameFile=contentFile.toString();
        filelines = nameFile.split('\n');
       
       
       
        accstoupload = new List<gii__ProductSerial__c>();
        Integer size = filelines.size()-1;
       
        gii__InventoryAdjustment__c []adj = [SELECT gii__Warehouse__c,gii__Product__c,gii__ProductInventory__c FROM gii__InventoryAdjustment__c WHERE Id = :TheId];
      
       
        for (Integer i=1;i<filelines.size();i++)
        {
           
            String[] inputvalues = filelines[i].split(',');
            String name = inputvalues[0].trim();
            String Carton = inputvalues[1].trim();
            String Pallet = inputvalues[2].trim();
            String MBSerial = inputvalues[3].trim();
            string Mydate = inputvalues[4].trim();
            string Model = inputvalues[5].trim();
            String Refurbished = inputvalues[6].trim();
            //string school = inputvalues[7].trim();
            string price = inputvalues[7].trim();
           
                     
           
           
                       
            gii__ProductSerial__c a = new gii__ProductSerial__c();
            a.Name = name;
            a.CARTON_NO__c = Carton;
            a.PALLET_NO__c= Pallet;
            a.MBSERIAL_Number__c = MBSerial;
            a.Manufacturer_Date__c = date.parse(Mydate);
            a.Model__c = model;
            a.Refurbished__c = Refurbished;
            a.Price__c = price;
            a.gii__InventoryAdjustment__c = adj[0].Id;
            a.gii__Product__c = adj[0].gii__Product__c;
            a.gii__ProductInventory__c = adj[0].gii__ProductInventory__c;
            a.gii__Warehouse__c = adj[0].gii__Warehouse__c;
            a.gii__TransactionType__c = 'Inventory Adjustment';
          //  a.School_Registered_At__c = school;
           
            accstoupload.add(a);
           
        }
        try{
        upsert accstoupload MBSERIAL_Number__c ;
        }
         catch (Exception e)
        {
            ApexPages.Message errormsg = new ApexPages.Message(ApexPages.severity.ERROR,'An error has occured. Please check the template or try again later');
            ApexPages.addMessage(errormsg);
        }
     
       
       
    return null;
    }
  
}

And my test class is as follows
@isTest(SeeAllData = true)
private class FileUploader1Test {

    public static testmethod void constructorTest() {
   
    gii__InventoryAdjustment__c adj = new gii__InventoryAdjustment__c();
    adj.gii__AdjustmentQuantity__c = 20;
      adj.gii__AdjustmentDate__c = System.today();
      adj.gii__ProductInventory__c = 'a1c11000000AJM7';
      adj.gii__Reason__c = 'Inventory Adjustment';
      insert adj;

      PageReference pgRef = Page.Inventory_Adjustment_Another;
      //use the page reference Apex Class to instantiate a page named Inventory_Adjustment_Another
    
      Test.setCurrentPage(pgRef);
      //set the filled values for adj
     
      ApexPages.StandardController thecontroller = new ApexPages.StandardController(adj);
      //Initiation of the controller
     
      FileUploader1 controller = new FileUploader1(thecontroller);
      //the controller
    
      system.assert(thecontroller != null);
     
      thecontroller.save();
      String TheId = ApexPages.currentPage().getParameters().put('ID',adj.id);
       //blob forcontent = blob.valueof(blobcreator);
               
       String blobCreator =  '90JV1300002H42100650,G642109162,P452805539,EG451507895,6/15/2014,CD3,No,199' + '\r\n' +
                                '90JV1300002H42100651,G642109193,P452805539,EG451507643,6/15/2014,CD3,No,199'+ '\r\n' +
                                '90JV1300002H42100652,G642109162,P452805539,EG451507672,6/15/2014,CD3,No,199' + '\r\n' +
                                '90JV1300002H42100653,G642109161,P452805539,EG451507677,6/15/2014,CD3,No,199';
        
        blob forcontent = blob.valueof(blobcreator);
        controller.contentFile = forcontent;
        controller.nameFile = blobCreator;
        ApexPages.currentPage().getParameters().put('id', adj.id);
       
        Controller.ReadFile();
              
      
      }
}

this is the error that I am recieving" List index out of bounds: 0". Greatly appreciate any help possible.