Apex Developer Guide
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Understanding Testing in Apex
What to Test in Apex
Testing Best Practices
Testing Example
Testing and Code Coverage
Code Coverage Best Practices
Build a Mocking Framework with the Stub API
Glossary
Newer Version Available
Testing Apex
Apex provides a testing framework that allows you to write unit tests, run your
tests, check test results, and have code coverage results.
Let's talk about unit tests, data visibility for tests, and the tools that are available on the Lightning platform for testing Apex. We'll also describe testing best practices and a testing example.
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Understanding Testing in Apex
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What to Test in Apex
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What are Apex Unit Tests?
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Understanding Test Data
Apex test data is transient and isn’t committed to the database. -
Run Unit Test Methods
To verify the functionality of your Apex code, execute unit tests. You can run Apex test methods in the Developer Console, in Setup, in the Force.com IDE, or using the API. -
Testing Best Practices
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Testing Example
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Testing and Code Coverage
The Apex testing framework generates code coverage numbers for your Apex classes and triggers every time you run one or more tests. Code coverage indicates how many executable lines of code in your classes and triggers have been exercised by test methods. Write test methods to test your triggers and classes, and then run those tests to generate code coverage information. -
Code Coverage Best Practices
Consider the following code coverage tips and best practices. -
Build a Mocking Framework with the Stub API
Apex provides a stub API for implementing a mocking framework. A mocking framework has many benefits. It can streamline and improve testing and help you create faster, more reliable tests. You can use it to test classes in isolation, which is important for unit testing. Building your mocking framework with the stub API can also be beneficial because stub objects are generated at runtime. Because these objects are generated dynamically, you don’t have to package and deploy test classes. You can build your own mocking framework, or you can use one built by someone else.