shaolang
Testing Elixir: assert_receive throws "no matching message" error (page 85, B6.0)
First iteration that uses Process.sleep/1 works but the stab on using assert_receive doesn’t. I’ve even increased the timeout to 5,000 milliseconds for assert_receive but the test still fails with “no matching message”.
I can’t figure out what’s wrong with the test (for now). By the way, I’m using Mox 1.0 and Elixir 1.11.4.
If I’ve figured out, I’ll report back.
First Post!
shaolang
Okay, I’ve figured out:
- The test should not be in async mode, i.e.,
use ExUnit.Case, async: false. Also, instead of:set_mox_from_context, be explicit and use:set_mox_global(for simpler test body) or useallow/3to grant the sharing (more verbose); refer to Mox — Mox v1.0.0 for more info. - The (test) config file needs to reference the mocked version.
To ensure repeatability, SoggyWaffle.WeatherAPI.Behavior should also be stubbed to make SoggyWaffle.rain?/2 always return true.
HTH.
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