Test Driven Object Oriented Design - SOLID, Patterns & LLD

This course teaches Test Driven Object Oriented Design (TDD) using the SOLID principles, design patterns, and low-level design (LLD) techniques. Participants will learn how to write clean, maintainable, and scalable code through hands-on exercises and real-world examples. The SOLID principles provide a foundation for good object-oriented design, while design patterns provide common solutions to recurring design problems. LLD covers the technical details of software design, including memory management, performance optimization, and the trade-offs between different design choices. The course combines the latest best practices in software design with a focus on writing testable, high-quality code, to help participants develop robust, scalable software systems.

Course Structure

• Section 1: SOLID Principles

  • Define: Will define one by one each solid principle.

  • Test: Implement banking app via TDD (Test Driven Development). Will start by writing the requirement in the form test and then will fix/implement it.

  • Implementation: Implement solution & improve design using SOLID principle and test should remain fixed after it or can implement new requirement using the principle.

• Section 2: Design Patterns

  • Define: Explain the design pattern with a real-world example

  • Test: Lay down business requirements via writing test

  • Implementation: Fix the test / implement requirement by applying that design pattern

• Section 3: Shopping Cart

  • Define: Explain the problem

  • Think: Think solution & write down a rough structure of it. Suggest possible actors & their behaviors

  • Test: Start coding. Write down one by one requirements as a test.

  • Fix: Fix the test incrementally & code the whole solution via it. Use principles & best practices.

• Section 4: Parking Lot

  • Define: Explain the problem

  • Think: Think solution & write down a rough structure of it. Suggest possible actors & their behaviors

  • Test: Start coding. Write down one by one requirements as a test.

  • Fix: Fix the test incrementally & code the whole solution via it. Use principles & best practices.