Unit Testing

A collection of 39 posts

Continuous Integration , Unit Testing

What a crossword puzzle can teach us about programming

I enjoy doing the USA Today Crossword puzzle every day. It’s fun and I like to think it keeps me sharp. It’s also free. If you google it, you’ll find it rather quickly. This particular crossword puzzle has 2 modes: expert and casual. In expert mode, there

Unit Testing , How to , Coding Philosophy

How I use Test-Driven Development (TDD)

A lot of people out there are very dogmatic about Test Driven Development. There’s a lot rules and a lot of very strong opinions. If you don’t believe me, go check out Twitter. While on Twitter, I saw GeePaw Hill’s Ten I statements about TDD. It inspired

Unit Testing , How to

A case for sets

Back in LabVIEW 2019, NI introduced both sets and maps. Maps became immediately popular. They should be. They are very useful constructs. However, sets seem to have gotten much less attention. In some ways, they aren’t as glamorous, but they do offer some advantages over arrays. To me, these

Unit Testing , How to , Continuous Integration

Unit Tests for PPLs

So in my Unit Testing Workshop, I talk about taking tests written for libraries and retargetting them to the PPL once the library is built into PLLs. The last time I taught the workshop, someone asked me for an example. I didn’t have a good example to share, so

Unit Testing , How to

TDD in LabVIEW using Caraya

I’ve written a lot about Unit Testing in LabVIEW. There are a variety of frameworks. My go-to is JKI VI Tester, but JKI’s Caraya has been gaining popularity lately. I finally had time to sit down with it and practice some Test Driven Development (TDD). This is where

Python , Unit Testing

Tests are like bicycle helmets

I was listening to the IEEE’s SE Radio podcast the other day while riding my bike to work (ironic as you will see if you keep reading). They were interviewing Ken Youens-Clark who wrote a book called Tiny Python Projects. You would never put a kid on a bicycle

Unit Testing , Software tools , RT

Unit Testing on Real Time Targets

I’ve written a lot previously on unit testing and the value of unit tests. I try very hard to write unit tests for all my software and i try to use Test Driven Development (TDD) as much as I can. It’s not always easy. I just started a

Book Reviews , Unit Testing

A Great Intro To Unit Testing

As many of you may know Fabiola De la Cueva and Richard Jennings came out with a new LabVIEW book this year (actually the 5th edition of an existing book) LabVIEW Graphical Programming. I have been meaning to write a review, but I have put it off because I haven’

Coding Philosophy , Unit Testing , Kata

Importance of practice - Katas

So I have been listening to the maintainable podcast a lot lately. There is a lot of talk on there about doing coding katas. It also comes up a lot on twitter. I had never really done any. Then I took a udemy class on TDD in Python and it

Unit Testing , OOP

Unit Testing And Seams

One of the topics I found very interesting form the Art Of Unit Testing was seams. I wanted to write a blog post to explore that a little bit. What is a Seam? Seams are places in your code where you can plug in different functionality … Art of Unit Testing,

Book Reviews , Unit Testing

Art of Unit Testing 2nd edition

I originally bought this book on Fab’s recommendation. I had read the XUnit Test Patterns book and I liked it, but I thought it was rather large and cumbersome. It was 900 pages, so I was looking for something smaller and lightweight that I could recommend to people. I

Unit Testing , Coding Philosophy

Distributing Test Doubles and Mocks

One of the questions that came up in our recent Unit Testing Workshop was: How do I distribute reusable test code such as Test Doubles and Mock Objects? This question caught me by surprise. It wasn’t something I had really thought a lot about. I had typically just been

Unit Testing

Unit Testing Workshop Lessons Learned

At the end of January, we ran a Unit Testing Workshop. It went well. We had 7 participants. They included a LabVIEW Champion, and several CLAs. Overall the reviews were positive, but it was clear that there were some things that could be improved for the next time. 1. The

Unit Testing

Unit Testing - Tips For Getting Started

It’s a new year, so it is a good time to start planning and setting some goals for this year. If you are not currently using unit testing, starting to use it would be a great goal for the new year. People often struggle when starting to learn unit

Coding Philosophy , Unit Testing

Stop Asking Permission To Do The Right Thing

I was originally going to title this post “A Business Case for Unit Testing”. I was going to talk about how it helps you to find bugs early, spend less time debugging, and all the other benefits I have mentioned in my previous posts. I intended it as a cheat

How to , Software tools , Unit Testing

Caraya Review

Caraya is a popular Unit Testing solution from JKI. Compared to JKI VI Tester, Caraya seems to be newer and better supported. In fact while conducting this review I found a small bug. I reported it and it was fixed within 24 hours. The Caraya paradigm is different from the

Unit Testing , Webinars

December 2019 Webinar

Refactoring December 11 11:00am MT I need to add a feature but it is too hard. Refactoring can help! Refactoring is the art of taking existing code and waking it easier to understand and modify without actually changing it’s behavior. Why? Friction. Code is read more often than

How to , Software tools , Unit Testing

Insta Coverage

I first heard about InstaCoverage at NI Week 2018. I was part of a panel discussing Unit Testing. Peter Bokor gave a brief presentation right before the panel started on a new unit testing tool IncQuiry Labs had created called InstaCoverage. He really emphasized the code coverage calculation. This is

How to , Software tools , Unit Testing

AST Unit Tester Review

I recently did a review of JKI VI Tester. While it is my goto unit testing tool, there are several issues with it: * You have to be an admin to install it. * It adds a ton of dependencies to your project. * If you have a project that has tests in

How to , Software tools , Unit Testing

Using JKI VI Tester

If you have been following my posts, you will know that I am a big fan of JKI VITester. It is my goto Unit Tester. Why? Mostly because it is an implementation of xUnitStyle testing, which means that I can easily use all of the great patterns outlined in xUnit

Unit Testing

Reusing Tests for Built Code

As I have been doing more and more Unit Testing and Continuous Integration, I have often wondered about automating testing of built code. There are promising tools out there for testing built Win32 apps, such as WinAppDriver. There is also Selenium for testing webapps, so if you are into the

Unit Testing , OOP

Mock Objects Advanced Features

In the last post, I talked about how to use Mock Objects in Unit Tests. In this post, I am going to talk about some advanced features of the Mock Objects. It is worth going back and reading my previous posts on Mock Objects if you have not already done

Unit Testing , OOP

How To Use Mock Objects in Tests

In the last couple posts, I talked about Mock Objects: what they are and how to implement them in LabVIEW. In this post, I am going to talk about how to use them in unit tests. For reference, the video below shows how to use the Class Refactoring Toolkit and

Unit Testing , OOP

Anatomy of a Mock Object

In the last post, I talked about Mock Objects and what they are. In this post, I am going to talk a little bit about what they look like when you implement them in LabVIEW. The video below shows how to use the Class Refactoring Toolkit I created to create

Unit Testing , Webinars

October 2019 Webinar

Test Driven Development October 23 11:00am MT I Tried Unit Testing But Testing My Existing Code Is Too Hard! That’s because you have got the order wrong! Writing unit tests after the fact is possible, but it is always hard. Why? Because whoever wrote it never thought about