Apex Reference Guide

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Apex Reference Guide
Release Notes
Apex DML Operations
ApexPages Namespace
AppLauncher Namespace
Approval Namespace
Auth Namespace
Cache Namespace
Canvas Namespace
ChatterAnswers Namespace
CommerceExtension Namespace
CommerceOrders Namespace
CommercePayments Namespace
CommerceTax Namespace
Compression Namespace
ConnectApi Namespace
Context Namespace
Database Namespace
Datacloud Namespace
DataRetrieval Namespace
DataSource Namespace
DataWeave Namespace
Dom Namespace
EventBus Namespace
ChangeEventHeader Class
EventPublishFailureCallback Interface
EventPublishSuccessCallback Interface
FailureResult Interface
SuccessResult Interface
TestBroker Class
TestBroker Methods
TriggerContext Class
ExternalService Namespace
Flow Namespace
FormulaEval Namespace
fsccashflow Namespace
Functions Namespace
industriesNlpSvc
IndustriesDigitalLending Namespace
Invocable Namespace
IsvPartners Namespace
KbManagement Namespace
LxScheduler Namespace
Messaging Namespace
Metadata Namespace
PlaceQuote Namespace
Pref_center Namespace
Process Namespace
QuickAction Namespace
Reports Namespace
RevSalesTrxn Namespace
RichMessaging Namespace
Salesforce_Backup Namespace
Schema Namespace
Search Namespace
Sfc Namespace
Sfdc_Checkout Namespace
Sfdc_Enablement Namespace
sfdc_surveys Namespace
Site Namespace
Slack Namespace
Support Namespace
System Namespace
TerritoryMgmt Namespace
TxnSecurity Namespace
UserProvisioning Namespace
VisualEditor Namespace
Wave Namespace
Appendices
PDF

TestBroker Class

Contains methods that simulate the successful delivery or failed publishing of platform event or change event messages in an Apex test.

Namespace

EventBus

TestBroker Methods

The following are methods for TestBroker.

deliver()

Delivers platform event messages to the test event bus. Use this method to deliver test event messages multiple times and verify that event subscribers have processed the test events each step of the way.

Signature

public void deliver()

Return Value

Type: void

Usage

Enclose Test.getEventBus().deliver() within the Test.startTest() and Test.stopTest() statement block.

Test.startTest();
// Create test events
// ...
// Publish test events with EventBus.publish()
// ...
// Deliver test events
Test.getEventBus().deliver();
// Perform validation 
// ...
Test.stopTest();

fail()

Causes the publishing of platform event messages to fail in the test event bus. Use this method to test Apex publish callbacks.

Signature

public void fail()

Return Value

Type: void

Usage

// Create test events
// ...
// Publish test events with EventBus.publish()
// ...
// Fail publishing of test events
Test.getEventBus().fail();
// Perform validation 
// ...

For more information, see <link>Get the Result of Asynchronous Platform Event Publishing with Apex Publish Callbacks<link/> in the Platform Events Developer Guide.