38) ElixirConf US 2018 – Picking Properties to Test in Property-Based Testing – Michael Stalker

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elixirconf2018
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ElixirConf US 2018 – Picking Properties to Test in Property-Based Testing – Michael Stalker (@mstalker)

The developer stared at the screen in frustration and grumbled, “Example-based testing is straightforward. I pick a few inputs, and verify the output. I don’t get property-based testing. How can I write a test if I don’t know what the inputs are?”

Maybe you’re like this developer. Maybe you’re sold on the value of property-based testing. Maybe you’re convinced that it will help you write effective specs. But where do you go from here?

Identifying properties to test is your next step toward property-based testing greatness. You’ll learn what properties are. You’ll gain strategies to identify them in your code. You’ll see practical examples using StreamData, a property-based testing library. You might even start to view code verification in a new light.

You’ll get the most out of this presentation if you have used example-based testing in any language. You’ll go from “property-based testing looks awesome” to “I can do it!”

Audience: Beginner, Intermediate, Advanced
Topics: #testing, #property-testing

All talks are available in the ElixirConf US 2018 Talks List or via the #elixirconf2018 tag

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#2

I have to say that this was one of my favorite talks of the conference. It was very informative, well paced, and thoughtful. I’ll definitely be re-watching it in the future (before I open my ice cream shop :joy:)

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#3

This was my favourite talk by quite a long way; I’m busy trying to git gud at property-based testing, and the way he broke it down was excellent. Very nice when paired with the Ferd book.

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