b1az
Would you enable ExUnit's `--trace` option in a CI environment (GitHub)? (poll)
Coworker and I are at an impasse and would appreciate the community’s vote to resolve it. 
Would you enable
--trace option in a CI environment (GitHub)?- Yes,
--traceoption in a CI environment has its uses. - No,
--traceoption in a CI environment makes no sense.
0
voters
Elixir’s test-runner has a --trace option which does the following:
- it discards all of Elixir’s concurrency abilities and (slowly) runs everything sequentially, one-by-one
- it prints the test-names (here, here, etc.), even the passing ones. (The failed tests are, of course, always printed, even without
--trace.) - sets the test-timeout to
:infinity. It’s tracing, so this is expected/welcome (in dev/local environment). But not desired in a CI env as it can blow up the bill/costs.
Here’re coworker and my positions:
- Coworker’s argument for tracing is effectively the 2. above. In his words, it “gives a better visual understanding which tests are running”.
- My position against it are that:
- Not only are downsides of 1. and 3. not worth it, but one can also
- just look at the test file to see which tests are running. Moreover, one shouldn’t even care about the names of the passing tests, abiding by the Rule of Silence.
Trending in Discussions
As the title says, please share what you’ve been up to with Elixir. Whether that’s been learning it, looking into it, making stuff with i...
New
Hi everyone :waving_hand:
Posting here to showcase and announce that Metamorphic is now officially live on a public-facing domain at htt...
New
@chrismccord : I just saw the Extract AGENTS.md from Phoenix.new into phx.new generator commit to the phoenix project.
My initial shotgu...
New
I was working on an Ecto migration and I needed a timestamp. So, for the nth time, I looked up the different data types for timestamps, a...
New
Just a general thread to post chat/news/info relating to AI/ML stuff that may be relevant for Nx now or in the future. Got anything to sh...
New
I just stumbled on a newly redesigned elixir-lang.org. :tada: It looks like @Software_Mansion did the work, and I think it is generally a...
New
There has been a thread to discuss the Stack Overflow Developer Survey on this forum every year since 2018, so here’s yet another one for...
New
Other Trending Topics
Hey, I’m Jesse and I’m the main contributor behind Dexter, a full-featured, lightning-fast Elixir LSP optimized for large codebases. It s...
New
Beam Bots (or just BB for short) is a framework for building fault-tolerant robotics applications in Elixir using familiar OTP patterns. ...
New
Hello everyone. After busy few months I am happy to announce v0.1.0 of Emerge & Solve.
They are GUI (Emerge) and State management (S...
New
Emily is an Elixir library that runs Nx computations on Apple’s MLX. Install it as the default Nx backend and Nx, defn, Axon, Nx.Serving,...
New
@hugobarauna and I (Alex Koutmos) have been hard at work on writing a book on Nerves that takes you from simply blinking LEDs to building...
New
Introducing AshStorage! Attachment and file management that slots directly into your resources :smiling_face_with_sunglasses:
I had hope...
New
Chat & Discussions>Discussions
Latest on Elixir Forum
Sponsor Spotlight
Supporting innovation across the BEAM ecosystem.
Categories:
Sub Categories:
Forums
Popular Tags
- #ecto
- #liveview
- #troubleshooting
- #learning-elixir
- #deployment
- #library
- #erlang
- #testing
- #genserver
- #mix
- #absinthe
- #remote-other
- #otp
- #plug
- #how-to-question
- #macros
- #postgres
- #channels
- #elixirconf
- #exunit
- #discussion
- #code-sync
- #javascript
- #podcasts
- #onsite
- #dialyzer
- #docker
- #authentication
- #umbrella
- #full-time-contract
- #podcasts-by-brainlid
- #ecto-query
- #elixir-ls
- #phoenix_html
- #iex
- #blog-post
- #graphql
- #genstage
- #ai
- #websockets
- #elixirconf-us
- #supervisor
- #advent-of-code
- #distillery
- #processes
- #api
- #forms
- #metaprogramming
- #security
- #hex
Our Sponsors
Build Elixir applications with speed and confidence.
Supporting innovation across the BEAM ecosystem.
We build reliable cloud platforms for business-critical systems.
Catch errors, track performance, monitor hosts and more.
Error tracking, logs, uptime, and Just Enough APM. Built for developers.
Practical resources that improve the lives of professional developers.
Develop your skills with books, videos, and courses.
Producing high quality Elixir screencasts since 2017.
The team behind Membrane, Popcorn, LiveDebugger. Available for hire.
Courses that'll move you from confusion to "Aha, now I get it!"
First 4 of 4 Posts!
ypconstante
You can use a formatter like junit_formatter to have test information without having to use
--trace.sodapopcan
Some companies require you use
--tracefor auditing purposes. I personally think that is stupid but I’ve worked at a place where it was mandated by, I think, the investors? I dunno. Don’t @ me I’m just messenger.garrison
Just to be clear, as the docs mention this flag only disables running tests concurrently with each other. Processes are still preempted and so on.
It sounds like the purpose of this is to debug tests which are somehow interfering with each other in a way that they should not be.
lud
Yes trace is more for debugging the tests. If some company requires --trace for some reason, I would run both versions in CI, so the CI still runs with tests in concurrency that can fail and detect if something is messing with shared state.