Tesla.Mock.pdict_get/0 doesn't work inside of Broadway

[cfbender]

Finding an issue with #668 as of 1.10.0 on our project. Something with running pdict_get/0 inside of a process that Broadway owns returns an atom for pid_holder:

leading to the following error:

[error] ** (ArgumentError) errors were found at the given arguments:

  * 1st argument: not a pid

    :erlang.process_info(:"Broadway1.Broadway.ProcessorSupervisor")
    (elixir 1.16.2) lib/process.ex:839: Process.info/1
    (tesla 1.10.0) lib/tesla/mock.ex:238: Tesla.Mock.pdict_get/0
    (tesla 1.10.0) lib/tesla/mock.ex:204: Tesla.Mock.call/2
    (tesla_mock 0.1.0) lib/consumer.ex:20: MyBroadway.handle_message/3
    (broadway 1.0.7) lib/broadway/topology/processor_stage.ex:159: anonymous fn/6 in Broadway.Topology.ProcessorStage.handle_messages/4
    (telemetry 1.2.1) /Users/cfb/code/playground/tesla_mock/deps/telemetry/src/telemetry.erl:321: :telemetry.span/3
    (broadway 1.0.7) lib/broadway/topology/processor_stage.ex:146: Broadway.Topology.ProcessorStage.handle_messages/4
    (broadway 1.0.7) lib/broadway/topology/processor_stage.ex:65: anonymous fn/2 in Broadway.Topology.ProcessorStage.handle_events/3
    (telemetry 1.2.1) /Users/cfb/code/playground/tesla_mock/deps/telemetry/src/telemetry.erl:321: :telemetry.span/3
    (gen_stage 1.2.1) lib/gen_stage.ex:2578: GenStage.consumer_dispatch/6
    (gen_stage 1.2.1) lib/gen_stage.ex:2767: GenStage.take_pc_events/3
    (stdlib 5.2.3) gen_server.erl:1095: :gen_server.try_handle_info/3
    (stdlib 5.2.3) gen_server.erl:1183: :gen_server.handle_msg/6
    (stdlib 5.2.3) proc_lib.erl:241: :proc_lib.init_p_do_apply/3

I have set up a minimal reproduction here, as I couldn't get it to reproduce in the unit tests in this library in my fork: https://github.com/cfbender/tesla_mock_example

Hope this helps! We will just pin to 1.9.0 for now

[yordis]

Could this be solved with #683

[yordis]

I related https://github.com/elixir-tesla/tesla/releases/tag/v1.10.1, which may fix the issue; please reopen if that didn't work, or much better, send a pull request; you have my support with it.

[cfbender]

@yordis that should work, I was testing a similar fix on my fork locally. Thanks so much for the prompt response!