スケジュール可能なクラスのテストの追加

1@isTest
2private class TestSchedulableClass {
3
4   // CRON expression: midnight on March 15.
5   // Because this is a test, job executes
6   // immediately after Test.stopTest().
7   public static String CRON_EXP = '0 0 0 15 3 ? 2022';
8
9   static testmethod void test() {
10      Test.startTest();
11
12      // Schedule the test job
13      String jobId = System.schedule('ScheduleApexClassTest',
14                        CRON_EXP, 
15                        new MySchedulableClass());
16         
17      // Get the information from the CronTrigger API object
18      CronTrigger ct = [SELECT Id, CronExpression, TimesTriggered, 
19         NextFireTime
20         FROM CronTrigger WHERE id = :jobId];
21
22      // Verify the expressions are the same
23      System.assertEquals(CRON_EXP, 
24         ct.CronExpression);
25
26      // Verify the job has not run
27      System.assertEquals(0, ct.TimesTriggered);
28
29      // Verify the next time the job will run
30      System.assertEquals('2022-03-15 00:00:00', 
31         String.valueOf(ct.NextFireTime));
32      // Verify the scheduled job hasn't run yet.
33      Merchandise__c[] ml = [SELECT Id FROM Merchandise__c 
34                             WHERE Name = 'Scheduled Job Item'];
35      System.assertEquals(ml.size(),0);
36      Test.stopTest();
37
38      // Now that the scheduled job has executed after Test.stopTest(),
39      //   fetch the new merchandise that got added.
40      ml = [SELECT Id FROM Merchandise__c 
41                             WHERE Name = 'Scheduled Job Item'];
42      System.assertEquals(ml.size(), 1);
43
44   }
45}