Backend>Blogs/Talks

Automating Tests in Elixir Projects

gaggle

gaggle

Automating Tests in Elixir Projects

This post explores different ways to do test automation in Elixir, focusing on how to handle dependency injection — covering patterns, libraries, challenges, and trade-offs along the way. It walks through a series of real attempts using tools like Mock, Mox, ProcessTree, Hammox, and Double, all in the pursuit of fast, simple, and frictionless testing. Part of an ongoing series to explore the “perfect” Elixir setup.

1 comment
/elixir#blog-post#testing#web
4 598 1

Most Liked

jmagnani

jmagnani

Been dabbling in Elixir for a few days now, this article will definitely be helpful for me.

2
Post #2

Where Next?

View thread on forum
elixir
blog-post
testing
web
Home Backend>Blogs/Talks
/elixir#blog-post#testing#web
4 598 1
Last post

Popular Backend topics Top

First poster: bot
Backend>Blogs/Talks

How to use Lua for flexible configurations in Erlang and Elixir
When I need to configure something in a complicated way, I find myself reviewing the embedded language that provided the server to create...
erlang-solutions.com
/elixir/erlang/lua
1 1506 0
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: bot
Backend>Blogs/Talks

How safe is zig?
Like, on a scale from c to rust? issue c zig (release-safe) rust (release) out-of-bounds heap read/write none runtime runtime ...
scattered-thoughts.net
/c/rust/zig
0 2083 0
New
First poster: bot
Backend>Blogs/Talks

PHP in 2021
Once a year, I look back at the recent developments in the PHP world, and also look forward to what’s to come. And just like in 2020 and ...
stitcher.io
/php
0 1390 0
New
First poster: brennan
Backend>Blogs/Talks

Java Is Underhyped
The perspective of an ignorant computer science undergrad It’s likely that you read the title of this post and thought “what is this guy ...
jackson.sh
/java
8 1598 4
New
elbrujohalcon
Backend>Blogs/Talks

How do List Functions Fail in Erlang?
A long time ago, I wrote an article about The Asymmetry of ++, thanks to Fede Bergero’s findings. Let’s add a few more asymmetries to th...
medium.com
/erlang#blog-post
17 1659 5
New
First poster: bot
Backend>Blogs/Talks

A Clojure processor that's almost a drop-in replacement for php-fpm behind Nginx
Too long have we hustled to deploy Clojure websites. Too long have we spun up one server instance per site. Too long have reminisced abou...
github.com
/clojure/php#nginx
0 1472 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

Safe Ecto Migrations - Recipes and Resources
There is a new community resource available on writing “Safe Ecto Migrations”. When we get a migration wrong, it can lock up your product...
fly.io
/elixir#blog-post#postgres#database
4 1417 0
New
MarcinKasprowicz
Backend>Blogs/Talks

Elixir for JavaScript developers: first impressions
Elixir language viewed from the perspective of a JavaScript developer. I compared selected aspects of the two languages and touched on to...
medium.com
/elixir#blog-post#functional-programming/js
4 1188 3
New

Other popular topics Top

PragmaticBookshelf
Game Dev>Learning Resources

The Ray Tracer Challenge
Brace yourself for a fun challenge: build a photorealistic 3D renderer from scratch! In just a couple of weeks, build a ray tracer that r...
pragprog.com
#pragprog#published-book/book-the-ray-tracer-challenge#algorithms
3 14528 0
New
PragmaticBookshelf
Game Dev>Learning Resources

Apple Game Frameworks and Technologies
Design and develop sophisticated 2D games that are as much fun to make as they are to play. From particle effects and pathfinding to soci...
pragprog.com
#pragprog#ios#game-dev#macos/swift#published-book#apple/book-apple-game-frameworks-and-technologies
30 7995 10
New
DevotionGeo
Backend>Questions

Can someone explain the -t option/flag in docker run command?
I know that -t flag is used along with -i flag for getting an interactive shell. But I cannot digest what the man page for docker run com...
#docker
7 10261 2
New
AstonJ
General Dev>Dev Chat

How fast do you type? Check your WPM here!
Do the test and post your score :nerd_face: :keyboard: If possible, please add info such as the keyboard you’re using, the layout (Qw...
typing-speed-test.aoeu.eu
/keyboards
82 7682 31
New
DevotionGeo
General Dev>Dev Chat

The V Programming Language
The V Programming Language Simple language for building maintainable programs V is already mentioned couple of times in the forum, but I...
#programminguages/v
21 13874 7
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
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
CommunityNews
General Dev>In The News

Review of Linux on Minisforum V3 AMD Ryzen Tablet
A Brief Review of the Minisforum V3 AMD Tablet. Update: I have created an awesome-minisforum-v3 GitHub repository to list information fo...
mudkip.me
#linux#review#amd
0 4635 0
New
PragmaticBookshelf
Backend>Learning Resources

MySQL 9 Essentials
A concise guide to MySQL 9 database administration, covering fundamental concepts, techniques, and best practices. Neil Smyth MySQL...
pragprog.com
#pragprog#published-book/mysql/book-mysql-9-essentials
2 4162 0
New
CommunityNews
Game Dev>In The News

Grand Theft Auto: Vice City | DOS games in browser
Open-source implementation of the classic GTA engine now running directly in your browser. Experience the reVC technology demo on DOS.Zon...
dos.zone
#games#browser
0 173 0
New
Back to top

Sponsor Spotlight

Honeybadger

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

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