DPC2019: Beyond design patterns and principles - writing good OO code - Matthias Noback

Testing

Write good object-oriented code by mastering constructor arguments, inheritance, strictness, testing, and collaboration. Learn best practices and principles for simplicity, error handling, and data validation in this talk.

Key takeaways

It’s more important to understand how to write good object-oriented code than to learn patterns and principles. Reading a book is essential to grasp these concepts.
Use constructor arguments to make objects responsible for their state.
Favor functions that have a clear meaning over functions with complex conditions.
Use the concept of inheritance to make objects responsible for their behavior.
Emphasize strictness, as it helps to find mistakes and maintain code quality.
Test constructors thoroughly to ensure the correctness of your code.
Encourage collaboration and communication among team members.
Focus on behaviors rather than state.
Define clear boundaries between classes and interfaces.
Control instance creation and state by using constructors.
Best practices and principles are more important than patterns.
Provide the right data and the right number of values in constructors.
Consider testing frameworks like PHPUnit or mocker.
Implement automated testing with PHPUnit, combined with other frameworks like Codeception or Qum celebrant.
Validate data and state.
Design classes with clear responsibilities and interfaces.
Avoid complex error handling and focus on simplicity.
Constants and enumerations are essential for state and behavior.
Maps and trees are useful data structures for encoding data in a concise manner.
Follow the SOLID principles in object-oriented programming.

DPC2019: Beyond design patterns and principles - writing good OO code - Matthias Noback

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