Testing LiveView

LiveView is an amazing tool for building interactive applications. It has changed my approach to building rich UIs completely.

But testing LiveView apps requires us to learn how to use a new set of tools. And as with all new tools, we need to learn how to wield them well.

LiveView tests use a proxy process to act as the browser. That has benefits like running tests extremely fast and not having to run JavaScript for our tests. 🥳

But it also makes it easy to write specious tests — tests that seem correct but actually fail to test large portions of our LiveView code. Those tests mislead us into thinking our app is covered, but production is completely broken! 😱

That's why I won't only teach you the mechanics of writing LiveView tests (the how). I'll also teach you how not to write LiveView tests and the why of writing tests in specific ways.

When you're done, you'll have gained a new confidence in your testing abilities — the kind of confidence that makes you feel comfortable deploying on Fridays at 5pm.

Highly recommend this course! German is my go-to for LiveView testing, and I’m thrilled he took the time to create this comprehensive, thoughtful course.

Mike Clark

Creator of the Pragmatic Studio's LiveView course

A course that makes a real impact on your professional life

This course includes all the lessons I've learned while testing LiveView apps in the wild.

Each lesson is crafted from my experience testing LiveView applications and refined by my ten years of experience practicing test-driven development.

Once I teach you how to think about writing LiveView tests, you'll be able to apply the same logic to other testing challenges you face in the real world.

You'll learn to write fast, robust, and easy-to-maintain LiveView tests.

Took the course to improve @indiepaperme and check out if LiveView was ready for production. Ended up converting all pages to LiveView all covered by tests and production patterns I learnt from the course.

10/10 Recommended for LiveView.

Aswin Mohan

A practical course (and one you'll actually finish)

As a software developer, I know how difficult it is to keep up with all the latest developments with limited time.

But soooo many programming courses don't give you a good return on your time investment.

You sit through hundreds of hours of course material that you soon forget and never apply at work. Or worse, the course is so long you never finish it! 🤦

That's why I made Testing LiveView utterly practical.

I've taken a lot of time to distill each lesson into its essence, making it as short as possible while retaining its maximum value.

You can watch every lesson while drinking your morning coffee (or tea, no judgment). Or you can sit and watch it all in less than 3 hours! (That's less than it takes to watch The Return of the King!)

@germsvel's "Testing LiveView" #elixirlang #phoenixframework course is really great. Tons of actionable info, and zero fluff.

Nick Maxwell

Watch it once. Reference it forever.

Of course, we don't always retain what we learn perfectly. Sometimes we need to look back at it to reinforce the learning.

That is why this course is a golden reference for testing LiveView!

Keep coming back to the lessons (and helpful summaries) as much as you need!

I don't usually shout out, but testing live view by @germsvel is a great reference when testing.

Josh Taylor

Going into this I thought $100 is a bit much, but now I can see how much work went into this making it all simple and easy to understand.

Totally worth it.

You've struck a great balance between showing how to write tests and application without getting sidetracked with other app details. You've upgraded my skills. Thanks again!

— Krister Viirsaar

This was the biggest instructive course I've learned in my elixir journey. Thank you so much for all your efforts

— Shahryar Tavakkoli

Hot damn! This was a thorough, amazing and thoughtfully organized course! Amazing work. Much respect.

— Benjamin Shepard

I can't thank you enough for the course! It's allowed me to get comfortable with Elixir and Phoenix LiveView quickly as my career shifted from data science (C++, Python, R) to web-app testing & development.

— Ian MacDonald

"But what if I don't learn how to test LiveView?"

That's a fair question.

I truly believe this course will teach you how to test LiveView effectively.

But, hey, I've been wrong before. 🤷

That's why I offer my Learn to test guarantee!

Learn to test guarantee

If you don't learn how to test LiveView by the time you finish the course, I will give you a full refund.

If you don't learn, I don't earn.

Simple, but fair.

So, what do you have to lose? Get the course now!

About Me

German Velasco

I'm a software developer who's been practicing test-driven development for a decade.

You might recognize me from my one of my short video tips I share weekly , my Testing LiveView ElixirConf talk , my TDD Phoenix book , or one of my blog posts .

For the past six years, I've been helping clients deal with slow test suites, intermittent failures, difficult test cases, and more.

Testing is my passion. I love thinking about it, iterating on practices, and figuring out how to write tests that are valuable, stable, and easy to maintain.

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