ステップ 1: 単体テストを作成する

1@isTest
2private class TestDeleteRestrictInvoice {
3
4   // Invoice generator, with or without a Line Item
5   static Invoice__c createNewInvoice(Boolean withLineItem) {
6       // Create test Merchandise
7       Merchandise__c merchandise = new Merchandise__c(
8           Name = 'Test Laptop',
9           Quantity__c = 1000,
10           Price__c = 500
11       );
12       insert merchandise;
13
14       // Create test Invoice
15       Invoice__c invoice = new Invoice__c();
16       insert invoice;
17
18       // Create test Line Item and insert it into the database, if withLineItem == true
19       if (withLineItem) {
20           Line_Item__c item = new Line_Item__c(
21               name = '1',
22               Quantity__c = 1,
23               Merchandise__c = merchandise.Id,
24               Invoice__c = invoice.Id
25           );
26           insert item;
27       }
28       return invoice;
29   }
30
31   // Single row Invoice with no Line Items => delete
32   static testMethod void verifyInvoiceNoLineItemsDelete(){
33       // Create test Invoice and insert it
34       Invoice__c invoice = createNewInvoice(false);
35
36       // Delete the Invoice, capture the result
37       Database.DeleteResult result = Database.delete(invoice, false);
38
39       // Assert success, because target Invoice doesn't have Line Items
40       System.assert(result.isSuccess());
41      }
42
43   // Single row Invoice with Line Items => delete restrict
44   static testMethod void verifyInvoiceLineItemsRestrict(){
45       // Create test Invoice and Line Item and insert them
46       Invoice__c invoice = createNewInvoice(true);
47
48       // Delete the Invoice, capture the result
49       Database.DeleteResult result = Database.delete(invoice, false);
50
51       // Assert failure-not success, because target Invoice has tracks
52       System.assert(!result.isSuccess());
53   }
54
55   // Bulk delete of Invoice, one without Line Items, another with
56   static testMethod void verifyBulkInvoiceDeleteRestrict(){
57       // Create two test Invoices, one with and without a Line Item
58       Invoice__c[] invoices = new List<Invoice__c>();
59       invoices.add(createNewInvoice(false));
60       invoices.add(createNewInvoice(true));
61
62       // Delete the Invoices, opt_allOrNone = false, capture the results.
63       Database.DeleteResult[] results = Database.delete(invoices, false);
64
65       // Assert success for first Invoice
66       System.assert(results[0].isSuccess());
67       // Assert not success for second Invoice
68       System.assert(!results[1].isSuccess());
69   }
70}