Trying to upload this test class, but i am getting an error that apex test coverage is only 74%..which is why im trying to upload this test class lol..... any ideas? I am including the clas it is testing below....

 Appreciate any help!!

Thank You

@isTest
private class tableSortTest {
  private static void test() {
    Account a = new Account(name='Test');
    insert a;
    List<Task> tasks = new List<Task>{
      new Task(Subject='A Task',ActivityDate=System.Today(),Status='Completed',WhatId=a.id),
      new Task(Subject='Z Task',ActivityDate=System.Today().addDays(-1),Status='Not Started',WhatId=a.id)};
    insert tasks;
    Test.setCurrentPage(Page.Sort); 
    Test.startTest();
    ApexPages.currentPage().getParameters().put('id',a.id);
    tableSort controller = new tableSort();
    System.assertEquals(2,controller.getOpps().size());
    controller.sortField = 'Subject';
    controller.doSort();
    System.assertEquals('A Task',controller.getOpps()[0].Subject);
    controller.doSort();
    System.assertEquals('Z Task',controller.getOpps()[0].Subject);
    controller.sortField='ActivityDate';
    controller.doSort();
    System.assertEquals(System.Today().addDays(-1),controller.getOpps()[0].ActivityDate);
    controller.sortField='Subject';
    controller.doSort();
    System.assertEquals('A Task',controller.getOpps()[0].Subject);
    Test.stopTest();
  }
}

public class tableSort {

    public List<Task> opps;
    public Id theT;
    public String sortField {get; set;}
    public String previousSortField {get; set;}
    
      {
        theT = ApexPages.currentPage().getParameters().get('id');
        
    }
    
    public List<Task> getOpps() {
        if(opps == null){
            opps = [select WhatId, Subject, OwnerId, Description, ActivityDate from Task WHERE WhatId = :theT ];
        }
        return opps;
    }
    
    public void doSort(){
        String order = 'asc';
        
        /*This checks to see if the same header was click two times in a row, if so 
        it switches the order.*/
        if(previousSortField == sortField){
            order = 'desc';
            previousSortField = null;
        }else{
            previousSortField = sortField;
        }
       
        //To sort the table we simply need to use this one line, nice!
        superSort.sortList(opps,sortField,order);
    }
}