Workaround for Wallaby HTTPoison error

Questions / Help
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1

I am getting the error listed here https://github.com/elixir-wallaby/wallaby/issues/365 reliably ~50% of the time.

Anyone here have a workaround that may not have been discussed in this thread?

Thank you

Update:

Making async false and adding a sleep (~200ms) around every click/visit doesn’t make a difference. Tests passing < 50% of time with the same error:

(RuntimeError) Wallaby had an internal issue with HTTPoison:
     %HTTPoison.Error{id: nil, reason: :timeout}
2

@woohaaha Can you paste more of the stacktrace? This doesn’t say where the error happens.

But we at least see that you’re hitting timeouts. Maybe try increasing them? Docs here: https://hexdocs.pm/wallaby/readme.html#adjusting-timeouts

And if you’re running many tests in parallel, maybe try tuning that down as well? It is possible that the machine or Chromedriver can’t keep up.

3

Thank you for the suggestions!

I will paste the output of the error when I run it later.

I’ll checkout the timeouts suggestion and also explore other settings which I think are here hackney/doc/hackney.md at master · benoitc/hackney · GitHub under “make a request”

And if you’re running many tests in parallel, maybe try tuning that down as well?

How do I turn those down? I cannot find anything about allowing only one session to run.

It is possible that the machine or Chromedriver can’t keep up

Anything is possible :grinning: If I had to guess, and per the discussions in the github thread, it is that the chromedriver cannot keep up. I think my machine is fine since it is fairly new (2017) and I have turned off all memory hungry applications while testing to be sure. Upgraded to ChromeDriver 80.0.3987.16 (and browser as well). Are there any configs I can and should pass to it?

4

You can do that either in ExUnit’s config: ExUnit — ExUnit v1.16.0 or when running mix test: mix test — Mix v1.16.0 (look for max_cases/max-cases)

5

had this error
" test login --core test (Devato.Features.IndexPageTest)
test/devato_web/features/index_page_test.exs:13
** (RuntimeError) Wallaby had an internal issue with HTTPoison:
%HTTPoison.Error{id: nil, reason: :timeout}
stacktrace:
(wallaby 0.23.0) lib/wallaby/httpclient.ex:37: Wallaby.HTTPClient.make_request/5
(wallaby 0.23.0) lib/wallaby/experimental/chrome.ex:96: Wallaby.Experimental.Chrome.start_session/1
(wallaby 0.23.0) lib/wallaby.ex:78: Wallaby.start_session/1
(devato 0.1.0) test/support/feature_case.ex:25: Devato.FeatureCase.__ex_unit_setup_0/1
(devato 0.1.0) test/support/feature_case.ex:1: Devato.FeatureCase.ex_unit/2
test/devato_web/features/index_page_test.exs:1: Devato.Features.IndexPageTest.ex_unit/2"

i could run the tests chrome headless but i needed it to work so i can see it running on the browser . What worked for me was configuring the timeouts

https://hexdocs.pm/wallaby/0.23.0/readme.html#config
added
config :wallaby,
hackney_options: [timeout: :infinity, recv_timeout: :infinity]

Overriding a value

config :wallaby,
hackney_options: [timeout: 5_000]

hope this helps others

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