Backend>Blogs/Talks

Doctest functions with side effects

RudManusachi

RudManusachi

Doctest functions with side effects

Hi there! :wave: It’s me again!

Lately I’ve been working on documentation for the project, including adding some context function usage examples, and wanted to “doctest” them for the sake of correctness. However, I noticed that most of the high level public functions have side effects.

In the following blog post I share how we could “doctest” those impure functions on the example from Mox’s documentation.

View thread on forum
/elixir#blog-post#tdd#blog#doctest
4 873 0

Where Next?

View thread on forum
elixir
blog-post
tdd
blog
doctest
Home Backend>Blogs/Talks
/elixir#blog-post#tdd#blog#doctest
4 873 0
Last post

Popular Backend topics Top

First poster: AstonJ
Backend>Blogs/Talks

Ten years without Elixir
Ten years without Elixir. I never got into Elixir, largely because it looked like Ruby. I was a Rubyist for a good while, spent time and...
blog.cretaria.com
/elixir
9 1705 3
New
AstonJ
Backend>Blogs/Talks

How to set-up a Ruby and Elixir dev environment on macOS (2021)
Just finished doing a clean install of macOS (which I highly recommend btw!) and have updated my macOS Ruby & Elixir/Erlang dev env s...
astonj.com
/elixir/erlang/ruby/phoenix/nodejs#asdf
3 1889 0
New
Rainer
Backend>Blogs/Talks

Giving C# enums string values using attributes and extension methods
Just wrote a short post, more a memo to myself, but maybe someone find it useful :stuck_out_tongue: https://dwarfte.ch/2021/02/03/giving...
dwarfte.ch
/c-sharp
4 1281 4
New
First poster: dimitarvp
Backend>Blogs/Talks

I rewrote my Rust keyboard firmware in Zig: consistency, mastery, and fun
I’ve spent the last year building keyboards, which has included writing firmware for a variety custom circuit boards. I initially wrote ...
kevinlynagh.com
/rust/zig
3 2025 2
New
First poster: AstonJ
Backend>Blogs/Talks

What I wish I knew before building a Shopify App
They expect you to make a onepage application (SPA) The polaris design system officially only supports react Integration with the s...
ma.ttias.ch
26 1843 11
New
First poster: bot
Backend>Blogs/Talks

Between Go and Elixir
I discovered Elixir and Go at about the same time (2019). I had pivoted almost eight years of working as a Java developer, and part of me...
preslav.me
/elixir/go
2 1463 0
New
First poster: bot
Backend>Blogs/Talks

BEAM all the things! ClojErl, an implementation of Clojure on the Erlang Virtual Machine
Our blog has had a long standing interest in novel uses of the BEAM, or Erlang virtual machine, as shown by the many articles we have pub...
notamonadtutorial.com
/clojure/erlang#beam#clojerl
2 1712 0
New
brainlid
Backend>Blogs/Talks

Copy to Clipboard with Phoenix LiveView
Jason Stiebs shows a couple ways for a LiveView to make it easy for users to click and copy an important value to their clipboard. He sho...
fly.io
/elixir/phoenix#blog-post#liveview
10 1131 2
New
mtmattei
Backend>Blogs/Talks

State of WebAssembly 2024-2025
For the past few years, Safari has been putting in a lot of effort to enhance its WebAssembly support and 2024 was no exception… I believ...
platform.uno
#web/wasm
1 1468 0
New
brainlid
Backend>Blogs/Talks

Thinking Elixir 264 - Hot Reload In Dev and QA Bottlenecks
Episode 264 of Thinking Elixir. News includes Phoenix v1.8 shipping with an AGENTS markdown file for new apps to enhance coding agent exp...
youtube.com
#ai/elixir#podcasts/wasm#llm
1 630 0
New

Other popular topics Top

PragmaticBookshelf
Hybrid>Learning Resources

Programming Flutter
Instantly view the changes you make to an app with stateful hot reload, and define a declarative UI in the same language as the app logic...
pragprog.com
#pragprog/book-programming-flutter#published-book/flutter
11 4501 1
New
Exadra37
Linux>Questions

What is the most minimalist Linux server distro?
I am asking for any distro that only has the bare-bones to be able to get a shell in the server and then just install the packages as we ...
#linux#servers
66 25846 24
New
PragmaticBookshelf
Backend>Learning Resources

Programming Phoenix LiveView
Build highly interactive applications without ever leaving Elixir, the way the experts do. Let LiveView take care of performance, scalabi...
pragprog.com
#pragprog/elixir/phoenix#published-book/book-programming-phoenix-liveview
84 14528 26
New
mafinar
Backend>Chat

Data Structures and Algorithms with Elixir
This is going to be a long an frequently posted thread. While talking to a friend of mine who has taken data structure and algorithm cou...
/elixir#algorithms#data-structures
108 11869 31
New
Help
Game Dev>Questions

Can I use Java to program a game for Nintendo switch?
I am trying to crate a game for the Nintendo switch, I wanted to use Java as I am comfortable with that programming language. Can you use...
/java#nintendo
8 4771 3
New
husaindevelop
Android>Questions

Clipboard readtext not working in android webview
Inside our android webview app, we are trying to paste the copied content from another app eg (notes) using navigator.clipboard.readtext ...
#android#clipboard
1 5651 0
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Bruce Tate (Author) Interview and AMA!
Author Spotlight: Bruce Tate @redrapids Programming languages always emerge out of need, and if that’s not always true, they’re defin...
/elixir/ruby/phoenix/book-seven-more-languages-in-seven-weeks/book-seven-languages-in-seven-weeks#liveview/book-programming-phoenix-liveview
54 5678 23
New
PragmaticBookshelf
General Dev>Learning Resources

A Common-Sense Guide to Data Structures and Algorithms in Python, Volume 1
Big O Notation can make your code faster by orders of magnitude. Get the hands-on info you need to master data structures and algorithms ...
pragprog.com
#pragprog/python#published-book/book-a-common-sense-guide-to-data-structures-and-algorithms-in-python-volume-1
24 5988 11
New
AstonJ
AI>In The News

DeepSeek (671B) running on a cluster of 8 Mac Mini Pros with 64GB RAM each
This is cool! DEEPSEEK-V3 ON M4 MAC: BLAZING FAST INFERENCE ON APPLE SILICON We just witnessed something incredible: the largest open-s...
#ai#macs/deepseek
0 6695 1
New
PragmaticBookshelf
General Dev>Learning Resources

Write Better with Vale
Lint your docs like code: turn any style guide into enforceable rules with Vale and publish clear, consistent content every time. ...
pragprog.com
#pragprog#published-book#vale/book-write-better-with-vale
8 9973 5
New
Back to top

Sponsor Spotlight

Manning

Develop your skills with books, videos, and courses.

Latest in Elixir

Elixir Portal ❯

Backend>Blogs/Talks

Backend Blogs/Talks ❯

Latest on Devtalk

Devtalk ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

Linux New Media

Publishing Linux Magazine, ADMIN, and MakerSpace for 25+ years.

View all our sponsors ❯

Categories:

Sub Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

Linux New Media

Publishing Linux Magazine, ADMIN, and MakerSpace for 25+ years.

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap