scottswezey

scottswezey

Testing Elixir: logic error in code sample: with_authenticated_user/1 (Page 25)

The with_authenticated_user/1 code sample on PDF page 25 in B2.0 returns the user object, and not the authenticated_user object as I expect it should. Leaving the code as-is would probably be considered a logic error in a real application, and may be confusing to some readers of the book.

Current code:

def with_authenticated_user(context) do
    user = User.create(%{name: "Bob Robertson"})
    authenticated_user = TestHelper.authenticate(user)

    Map.put(context, :authenticated_user, user) # Error here
end

Fixed code:

def with_authenticated_user(context) do
    user = User.create(%{name: "Bob Robertson"})
    authenticated_user = TestHelper.authenticate(user)

    Map.put(context, :authenticated_user, authenticated_user) # Fixed
end

Marked As Solved

idlehands

idlehands

Author of Testing Elixir

@scottswezey As we are prepping for production, I finally made this fix. Thanks again for catching it. It was a great call out. Alas, the sample code probably won’t be updated until the book is finalized.

Also Liked

scottswezey

scottswezey

This error is still present in B3.0.

idlehands

idlehands

Author of Testing Elixir

Thanks! I’m sorry we missed this in the last release. The errata system currently leaves a bit to be desired. We will make sure the code is updated for the next beta.

idlehands

idlehands

Author of Testing Elixir

I lied. But it will be updated by the time we roll out the final. Sorry… been a bit overwhelmed.

Where Next?

Popular Pragmatic Bookshelf topics Top

mikecargal
Title: Hands-On Rust (Chap 8 (Adding a Heads Up Display) It looks like ​.with_simple_console_no_bg​(SCREEN_WIDTH*2, SCREEN_HEIGHT*2...
New
mikecargal
Title: Hands-On Rust (Chapter 11: prefab) Just played a couple of amulet-less games. With a bit of debugging, I believe that your can_p...
New
edruder
I thought that there might be interest in using the book with Rails 6.1 and Ruby 2.7.2. I’ll note what I needed to do differently here. ...
New
AleksandrKudashkin
On the page xv there is an instruction to run bin/setup from the main folder. I downloaded the source code today (12/03/21) and can’t see...
New
gilesdotcodes
In case this helps anyone, I’ve had issues setting up the rails source code. Here were the solutions: In Gemfile, change gem 'rails' t...
New
AndyDavis3416
@noelrappin Running the webpack dev server, I receive the following warning: ERROR in tsconfig.json TS18003: No inputs were found in c...
New
digitalbias
Title: Build a Weather Station with Elixir and Nerves: Problem connecting to Postgres with Grafana on (page 64) If you follow the defau...
New
AufHe
I’m a newbie to Rails 7 and have hit an issue with the bin/Dev script mentioned on pages 112-113. Iteration A1 - Seeing the list of prod...
New
ggerico
I got this error when executing the plot files on macOS Ventura 13.0.1 with Python 3.10.8 and matplotlib 3.6.1: programming_ML/code/03_...
New
davetron5000
Hello faithful readers! If you have tried to follow along in the book, you are asked to start up the dev environment via dx/build and ar...
New

Other popular topics Top

PragmaticBookshelf
Learn from the award-winning programming series that inspired the Elixir language, and go on a step-by-step journey through the most impo...
New
PragmaticBookshelf
Learn different ways of writing concurrent code in Elixir and increase your application's performance, without sacrificing scalability or...
New
Margaret
Hello everyone! This thread is to tell you about what authors from The Pragmatic Bookshelf are writing on Medium.
1147 29994 760
New
AstonJ
Saw this on TikTok of all places! :lol: Anyone heard of them before? Lite:
New
AstonJ
If you get Can't find emacs in your PATH when trying to install Doom Emacs on your Mac you… just… need to install Emacs first! :lol: bre...
New
PragmaticBookshelf
Author Spotlight Mike Riley @mriley This month, we turn the spotlight on Mike Riley, author of Portable Python Projects. Mike’s book ...
New
New
New
New
PragmaticBookshelf
Fight complexity and reclaim the original spirit of agility by learning to simplify how you develop software. The result: a more humane a...
New

Sub Categories: