• Preface, Primer, Table of Contents, Etc.
  A little bit of order to organize the chaos.
  Jan 01, 3000
• Test Layers; From Unit to System
  Building Confidence with the Right Tests at the Right Level
  Jun 23, 2025
• Software Contracts
  Specifying the obligations and expectations between client and provider
  Jun 10, 2025
• Humble Objects - Designing Code You Don’t Hate Testing
  A pattern to help test code that's difficult to test
  Apr 14, 2025
• Mastering Time in Software Testing - Strategies for Temporal Behavior Verification
  Become a Time Lord and control time in your tests
  Apr 08, 2025
• Approval Testing - A Test Strategy for those who are reluctant to try Test-Driven Development
  I’m the Design Pattern Evangelist, and I APPROVE this message
  Apr 02, 2025
• How do you know if your test code is really testing your code?
  Mutation testing tests your tests
  Mar 28, 2025
• Working Effectively with Legacy Code
  … with all due respect to Michael Feathers in stealing his book title and a lot of his ideas for this blog
  Mar 24, 2025
• A House Divided Against Itself Will Not Stand
  Resolving an inconsistency between my Design Process and TDD blog entries
  Mar 07, 2025
• What Is Cohesive Abstraction?
  How to manage cohesion among abstractions consistently
  Nov 27, 2024
• Coupling and Cohesion – Take 2
  Let’s revisit these concepts one more time
  Nov 22, 2024
• What Are Cohesion and Coupling?
  Cohesion and coupling address when things should and should not be too sticky with one another
  Nov 07, 2024
• What Is Abstraction?
  Abstraction is separating the WHAT from the HOW in the design and implementation.
  Oct 30, 2024
• Prompt Engineering Patterns Continued
  More ways to have a productive conversation with a Large Language Model
  Oct 18, 2024
• Prompt Engineering Patterns
  How to have a productive conversation with a Large Language Model
  Sep 25, 2024
• An Introduction to Large Language Models and Generative AI
  The genie is out of the bottle
  Sep 18, 2024
• Testing Concerns
  Test concerns may be a result of previous bad test experiences. There are ways to accommodate them.
  Sep 08, 2024
• Testing Benefits
  Spoiler Alert – It’s not really about testing the code
  Aug 30, 2024
• What Is Behavior in BDD Exactly?
  Oops. I didn’t define "Behavior" in the Behavior-Driven Development blog.
  Aug 20, 2024
• Losing Your Job Stinks
  How I coped when seeking employment in a down job market
  Aug 11, 2024
• Be On Your Best Behavior
  Test-Driven Development - How to create tests; Behavior-Driven Development - What tests to create
  Aug 08, 2024
• Yuri, the Programming Assignment and Me
  The TDD indoctrination of youthful programmers via testing propaganda, OR just show them how it’s beneficial
  Jul 22, 2024
• Writing Tests Before the Implementation
  I know it sounds completely backwards, but please give it some consideration
  Jul 15, 2024
• Suril, the Semaphore and Me
  My theory-to-practice test double epiphany
  Jul 08, 2024
• Test Doubles
  Emulate dependencies without depending upon dependencies
  Jul 02, 2024
• Basic Elements of Automated Unit Tests
  Elevating automated tests to first-class citizen status
  Jun 23, 2024
• Attributes of Effective Unit Tests
  Unit Test properties that make them more useful than not
  Jun 14, 2024
• The Conversion of a Unit Test Denier or …
  How I Learned to Stop Worrying and Love Unit Testing
  Jun 07, 2024
• My Design Process
  My design process from concept to implementation
  May 28, 2024
• Interpreter Design Pattern – Production Example
  My Experience Using Interpreter on a Work Project
  May 14, 2024
• Interpreter Design Pattern – Scanner and Parser Implementation
  Implementing the Scanner and Parser for the Rational Expression Evaluator Use Case
  Apr 30, 2024
• Interpreter Design Pattern – Scanner and Parser
  The basics of Scanner and Parser theory and practice.
  Apr 25, 2024
• Interpreter Design Pattern – Design to Implementation
  Implementing the Interpreter Design Pattern based upon a Design.
  Apr 17, 2024
• Interpreter Design Pattern – Grammar to Design
  The Interpreter Design emerges from the Grammar.
  Apr 07, 2024
• Interpreter Design Pattern – Grammars
  Grammars define the structure rules for natural and programming languages.
  Apr 02, 2024
• Interpreter Design Pattern – Domain-Specific Languages
  Domain-Specific Languages solve domain-specific problems.
  Mar 18, 2024
• Interpreter Design Pattern - An Introduction
  A "Mostly" Gentle Introduction to Interpreter
  Mar 12, 2024
• Specification Design Pattern – Use Case
  Using the Specification Design Pattern for Smart Playlists
  Mar 07, 2024
• Specification Design Pattern
  Allow a Client to select or filter objects with specific attribute property values as specified by the Client.
  Mar 06, 2024
• Composite Design Pattern - Use Case
  Using Composite Design Pattern for Secret Menu Items
  Feb 29, 2024
• Composite Design Pattern
  Configure behavior emerging from a group of snippet behavior objects organized in a tree structure.
  Feb 27, 2024
• Chain of Responsibility Design Pattern
  Delegate a request through a linked chain of handlers until one of the handlers can complete the request.
  Feb 20, 2024
• Decorator Design Pattern
  Layer additional behaviors upon core features.
  Feb 08, 2024
• Proxy Design Pattern
  Place administrative wrapper objects around objects often to help manage their complexity or resources.
  Feb 01, 2024
• Composable Design Patterns – Basic Concepts
  Code reuse and dynamic flexibility via composition
  Jan 03, 2024
• Bumper Sticker Computer Science and Software Engineering
  Wit and wisdom of Computer Science and Software Engineering in itty bitty bytes
  Dec 15, 2023
• Hexagonal Architecture – Adapter Flexibility
  How a few design options in the Adapter Layer provides more flexibility
  Nov 30, 2023
• Hexagonal Architecture and how it compares to and contrasts with Clean Architecture
  Hexagonal vs Clean where the Devil is in the Details
  Nov 13, 2023
• Hexagonal Architecture – Why it works
  It’s all about dependency and knowledge management
  Nov 03, 2023
• Hexagonal Architecture – The Structure
  Why it’s also called Ports and Adapters
  Oct 28, 2023
• Hexagonal Architecture – An Introduction
  Despite its name, it really isn’t about hexagons.
  Oct 24, 2023
• Dependency Injection
  How Dependency Injection resolves object resolution cleanly
  Oct 09, 2023
• Factory Design Patterns
  How do you instantiate an object without knowing its type?
  Oct 07, 2023
• Façade Design Pattern
  A Façade is just an illusion making a task appear easier than it really is.
  Oct 03, 2023
• Adapter Design Pattern
  What we've got here is... failure to communicate. Maybe there's a cool pattern that could give us a hand with that.
  Sep 29, 2023
• Template Method Design Pattern
  For when your algorithm is only a skeleton, and you need to put some meat on those bones.
  Sep 26, 2023
• Getting the Right Abstraction is Hard
  Sometimes you don’t know the right abstraction until you see a few examples.
  Sep 22, 2023
• Strategy Design Pattern
  When there’s more than one way to get the job done.
  Sep 21, 2023
• Command Design Pattern
  Turn a function into a first-class citizen object so that it can do much more than before.
  Sep 18, 2023
• Dems D’FFACTS
  Seven essential design patterns that should be in every developer’s toolbox
  Sep 07, 2023
• Design Pattern Principles
  Design patterns are governed by two design principles.
  Sep 06, 2023
• Parts is Parts
  Design patterns are comprised of different configurations of the same repeating Object-Oriented constructs.
  Sep 01, 2023
• Put More Tools in your Toolbox
  What's in your toolbox?
  Aug 29, 2023
• The Big Wheel Keeps on Turning
  Design patterns have been around for a long time
  Aug 28, 2023
• Problem Solvers
  Software developers aren't hired to write code
  Aug 26, 2023
• It's Your Move
  Do you know how to truly play the game, or do you only know the rules?
  Aug 24, 2023
• Knock, Knock ... Who's There?
  Are you a software cook or software chef?
  Aug 21, 2023
• What is UML and why you may want to care
  UML isn't about designing the solution. It's about organizing the domain of the problem.
  Jun 22, 2021