0118:42Introduction to the Separation of Concerns Design Principle
An explanation of the Separation of Concerns Design Principle and why it is valuable to implement in any codebase.
Companion videos
The whole guide, on video
Twenty walkthroughs in the order the chapters build on each other - 9h 6m in total. Every one is free, and every one pairs with a written chapter if you would rather read it.
Pick up where you left off
Introduction to the Separation of Concerns Design Principle
Chapter 01 · 18:42 · 0 of 20 watched (0%)
Introduction
2 videos0118:42
0215:20Introduction to the Apex Common Library
An overview of the tools available with the Apex Common Library.
The Application class
2 videos
The Unit of Work
2 videos
The Service layer
2 videos
0724:08
0835:22Implementing the Service Layer with the Apex Common Library
How to setup your service classes with the Apex Common Library in mind.
The Domain layer
3 videos
0914:36
1021:04The Domain Layer
A representation of an object/database table that incorporates both its behavior and data.
1138:50Implementing The Domain Layer with the Apex Common Library
How to implement the Domain Layer with the assistance of the Apex Common Library.
The Selector layer
3 videos
1217:29The Builder Pattern
A creational design pattern that allows for the step-by-step construction of complex objects.
1327:31
1436:14Implementing the Selector Layer with the Apex Common Library
How to implement the Selector Layer using the Apex Common Library.
The Apex Mocks library
3 videos
1513:52The Difference Between Unit Tests and Integration Tests
Mocks are fast and isolated. Integration tests are slow and real. You need both.
1626:40Unit Test Mocks with Separation of Concerns
Why SoC is the thing that makes true unit testing possible.
1741:19Implementing Mock Unit Tests with the Apex Mocks Library
How to implement unit tests using the Apex Mocks Library
Dependency Injection with Force DI
3 videos
1821:07Dependency Injection and Inversion of Control
Ask for the interface, let configuration decide the class.
1964:42Implementing Force DI Bindings, Modules and Providers
Wiring up di_Binding__mdt records, modules and providers to resolve dependencies at runtime.
2031:36TDD and Mocking with Force DI
True unit tests with Test.createStub and runtime binding overrides.