Dreamforce 2016 - Test the Pyramid

Josh BoydenSenior Quality Engineer, Salesforce [email protected]

Test the Pyramid

Larry LatimerMTS Software Engineer, Salesforce IT

@77atimer

Dreamforce 2016

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Key Takeaways

Rediscover the Importance of TestingTechniques for Successful Testing on the PlatformValue and class injection for functional testsSelenium for UI, JavaScript and end to end tests

Why Test?

Why Test?

Requirement to Deploy• Meet the spirit of coverage not the percentage of coverage

Regression Testing• ...a type of software testing that verifies that software previously developed and tested still

performs correctly after it was changed or interfaced with other software. (wiki)• The goal is to identify bugs before your user or customers do.

Why Test Differently?

Problems• Enterprise architecture is complex• Shared environment

Plan for a larger org

Testing Pyramid

The concept of the Testing Pyramid originated from Mike Cohn and Martin FowlerFewer UI and End to End TestsMany fast running, fast result functional/ unit tests

Credit:@mikewcohn@martinfowler

Cost TimeUI

Unit

API

Testing Pyramid and Salesforce

UIVisualforceLightningJavaScript

APIREST callsTriggers

UnitApex class methodsApex propertiesTrigger helper methods

Cost TimeUI

Unit

API

Declarative ProcessValidations, Workflows

Positive and Negative TestsAll branches and states of your codeAll catch blocks

Methods and Properties

User Interface and JavascriptUsing Selenium or other UI testing tool

What to Test

Cost TimeUI

Unit

API

Functional Unit vs UI

UnitMany

Fast

Focused

Method specific

UIFew

Slow

Complex

Business process focused

VS.

Functional Testing

DML IntensiveBuild, insert, update, query (SOQL) and assert then rollback records

Test Trigger to End of ProcessTriggers should require minimal testing so focus on classes and methods

Functional TestingConventional Testing

No More DMLWrite your methods to handle in memory parameters

Inject Values into Class for TestingUse properties with @TestVisisbleIsolate your SOQL and DML statements

Inject Classes using Interfaces For Testing

Use mock classes to replace business logic not being tested

Test Run FasterNo longer a need for DML, database rollback or dependent codeLess chance of being blocked by governor limitsValidation and Workflows will no longer interfere with Apex testing

Functional TestingA Different Way of Testing

Scenario Set the stage Contact count rollup

Functional Tests@TestVisible Properties

Inject values into a class rather than using SOQL to query

Functional TestsPopulate Variables in Memory

Populate the class variables and properties from in memory valuesAvoid SOQL for values

Functional TestsUse JSON to Create Records

Serialize your SOQL results to use later for populating class properties

Josh Boyden

Senior Quality Engineer, Salesforce IT

PLACE COMPANY LOGO HERE

Selenium

Tip of the Pyramid Creating UI and E2E tests with Selenium

Cost Time

UI

Unit

API

What is Selenium?How many people have heard of Selenium?

“Selenium automates browsers. That’s it!”http://www.seleniumhq.org/

Selenium HQ Free, open source Creates browsers Simulates user interaction

Why use Selenium?Visualforce pagesJavaScriptComplex end to end workflows• By-pass governor limits

Why use Selenium?Checkout – eCommerce website• Customer facing• UI intensive• JavaScript

Salesforce IT

Scenario UI-intensive Account

edit page Auto-formatting

phone number inputTest Case Test the JavaScript on

the phone input

Example Test Case

Demo!

Selenium design conceptsEncapsulate pages as individual classes• Methods as accessors or simple actionsTest classes control logic and do assertions

Page object model

Selenium design concepts Page object model

Ready to get started with Selenium?Project source codehttps://github.com/joshboyden/Dreamforce16Selenium

Call to action

Conclusion

Remember the Test Pyramid• Write lots of focused Apex functional tests• Use tools like Selenium to test end to end, UI and Javascript

Reduce Dependency on the Platform• Avoid DML when possible• Develop atomic tests using variable and class injection

Improve quality and productivity

Cost TimeUI

Unit

API

Q&A

Larry Latimer @77atimer

Josh Boyden [email protected]

Selenium project https://github.com/joshboyden/Dreamforce16Selenium

Thank Y u