The service locator pattern is a design pattern used in software development to encapsulate the processes involved in obtaining a service with a strong abstraction layer.
We already mention it in our article: How to develop a flexible Apex code for Salesforce.
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Testing is the key to successful long-term development and is a critical component of the development process. Unit tests validate that your application works as expected, that there are no unexpected behaviors.
Apex provides a testing framework that allows you to write unit tests, run your tests, check test results, and have code coverage results.
Continue reading Salesforce Unit Test Best Practices →