I have written the above code but I'm unsure how you would write a test class can someone point me to a video or any documention which will help me learn this please? 

I have attached my code incase its a really simple test class to write. 

global class MarketingClicks implements Schedulable {
    global void execute(SchedulableContext ctx) {
        List<Lead> Leadlist = [SELECT Id, Campaign_Name__c FROM Lead WHERE Link_Type__c != ''];

        for(Lead L : LeadList)
        {        
            //Create Marketing Click
            L.Link_Type__c = 'TEST';
            Pardot_Campaign__c PC = new Pardot_Campaign__c();
            PC.Lead__c = L.Id;
            PC.Name = L.Campaign_Name__c;
            insert PC;
            L.Campaign_Name__c= '';
            Update L;
            }
        System.debug(Leadlist);
    }
    
}

Thanks in advance

Hello,

I am getting an error when running my test class. The error is coming from my Controller class where a SOQL query uses the ORDER BY clause

Any ideas on how to overcome this error?
Error

System.QueryException: unexpected token: 'BY'

Class.ResourceListController.getResourceList: line 5, column 1
Class.resourceListTestClass.testMethod1: line 70, column 1

Controller

public class ResourceListController {
   public Id RecordId {get;set;}    
public List<Resource_List__c> getResourceList() {
    RecordId  = ApexPages.currentPage().getParameters().get('id');
    List<Resource_List__c> results = Database.query(
        'SELECT Id, Account__c, Account__r.Name, Distance__c, type__c, Account__r.Phone, Account__r.Description, Account__r.billingStreet, Account__r.billingCity, Account__r.billingPostalCode, Account__r.billingState ' +
        'FROM Resource_List__c ' + 
        'Where Social_Services_Assessment__c = :RecordId' +
        'ORDER BY Type__c asc, Distance__c asc'
    );
    return results;
}
    
    
}

Test Class

@isTest
public class resourceListTestClass {
	static testMethod void testMethod1()
    {
        Account ta = new Account();
        ta.name = 'Alex Demo';
        ta.First_Name__c = 'Alex';
        ta.Surname__c = 'Demo';
        ta.Primary_Insurance__c = 'Test Insurance Company';
        ta.Gender__c ='Male';
        ta.County__c ='Yavapai';
        ta.BillingStreet = '123 West Gurley Street';
        ta.BillingCity = 'Prescott';
        ta.BillingState = 'Arizona';
        ta.BillingPostalCode = '86303';
        ta.RecordTypeId = '012360000004FEPAA2';
        insert ta;
        
        Social_Services_Assesment__c sw = new Social_Services_Assesment__c ();
        sw.Account__c = ta.Id;
        sw.Radius_in_miles__c = 25;
        sw.Monthly_income__c = 5000;
        sw.Do_you_have_enough_money_each_month__c = 'No';
        sw.Do_you_recieve_SSI__c = 'No';
        sw.Do_you_receive_SSDI__c = 'No';
        sw.Do_you_receive_food_assistance__c = 'No';
        sw.Do_you_receive_cash_assistance__c = 'No';
        sw.Do_you_have_adequate_shelter__c = 'No';
        sw.Do_you_need_congregate_meals__c = 'Yes';
        sw.Do_you_need_transportation__c = 'Yes';
        sw.Do_you_have_enough_money_each_month__c = 'No';
        sw.Can_you_pay_for_your_housing__c = 'No';
        sw.Can_you_pay_your_utilities__c = 'No';
        sw.Can_you_pay_for_transportation__c = 'No';
        sw.Can_you_pay_for_medical_visits__c = 'No';
        sw.Are_you_unemployed__c = 'Yes';
        sw.SSI_SSDI_decreased__c = 'Yes';
        sw.RecordTypeId = '0121R000000yZUyQAM';
        insert sw;
        
        Account r1 = new Account ();
        r1.RecordTypeId = '0121R000000yZGLQA2';
        r1.Name = 'Resource 1';
        r1.Food_Bank__c = true;
        r1.Financial_Assistance__c = true;
        insert r1;
        
        Account r2 = new Account ();
        r2.RecordTypeId = '0121R000000yZGLQA2';
        r2.Name = 'Resource 2';
        r2.Food_Bank__c = true;
        r2.Financial_Assistance__c = true;
        insert r2;
        
        Resource_List__c RL1 = new Resource_List__c ();
        RL1.Account__c = r1.Id;
        RL1.Social_Services_Assessment__c = sw.id;
        RL1.Type__c = 'Food Bank';
        insert RL1;
        
        Resource_List__c RL2 = new Resource_List__c ();
        RL2.Account__c = r2.Id;
        RL2.Social_Services_Assessment__c = sw.id;
        RL2.Type__c = 'Food Bank';
        insert RL2;
        
test.StartTest();
PageReference PageRef = Page.ResourceList;
test.setCurrentpage(PageRef);
System.currentPageReference().getParameters().put('RecordId',sw.Id);
ResourceListController obj = new ResourceListController();
obj.getResourceList();
test.StopTest();
        
    }
}