Module 11: Testing

In this module, you write tests for the RejectDoubleBooking trigger you created in module 6.

Step 1: Create a Test Class

1. In the Developer Console, select File > New > Apex Class, specify TestRejectDoubleBooking as the class name and click OK

2. Make the class private, and add the @isTest class annotation:

   @isTest
   private class TestRejectDoubleBooking{
   
   }
   

Step 2: Add a Test Method to Test Single Bookings

1. Add a TestSingleBooking() method to the TestRejectDoubleBooking class to make sure the trigger does not prevent a valid speaker booking:

   static testmethod void TestSingleBooking() {
       Datetime now = System.now();
   
       Speaker__c speaker = new Speaker__c(First_Name__c='John', Last_Name__c='Smith');
       insert speaker;
   
       Session__c session = new Session__c(Name='Some Session', Session_Date__c=now);
       insert session;
   
       Session_Speaker__c assignment =
           new Session_Speaker__c(Session__c=session.Id, Speaker__c=speaker.Id);
       Test.startTest();
       Database.SaveResult result = Database.insert(assignment, false);
       Test.stopTest();
   
       System.assert(result.isSuccess());
   }
   

2. Save the file

3. Click Run Test in the upper right corner of the code editor

4. Click the Tests tab at the bottom of the code editor, and examine the test results.

   

Step 3: Add a Test Method to Test Double Bookings

1. Add a TestDoubleBooking() method to the TestRejectDoubleBooking class to make sure trigger actually rejects double bookings:

   static testmethod void TestDoubleBooking() {
       Datetime now = System.now();
   
       Speaker__c speaker = new Speaker__c(First_Name__c='John', Last_Name__c='Smith');
       insert speaker;
   
       Session__c session1 = new Session__c(Name='Session 1', Session_Date__c=now);
       insert session1;
       Session__c session2 = new Session__c(Name='Session 2', Session_Date__c=now);
       insert session2;
   
       Session_Speaker__c assignment1 =
           new Session_Speaker__c(Session__c=session1.Id, Speaker__c=speaker.Id);
       insert assignment1;
   
       Session_Speaker__c assignment2 =
           new Session_Speaker__c(Session__c=session2.Id, Speaker__c=speaker.Id);
       Test.startTest();
       Database.SaveResult result = Database.insert(assignment2, false);
       Test.stopTest();
   
       System.assert(!result.isSuccess());
   }
   

2. Save the file

3. Click Run Test in the upper right corner of the code editor

4. Click the Tests tab at the bottom of the code editor, and examine the test results.