Supertester.MessageHarness (Supertester v0.6.0)

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Utilities for observing messages delivered to a process during a function run.

These helpers are intended for troubleshooting concurrent tests where mailbox visibility is important. They integrate with ConcurrentHarness reports but can also be used standalone.

Summary

Functions

trace_messages(pid, fun, opts \\ [])

Traces messages received by pid while executing fun.

Functions

trace_messages(pid, fun, opts \\ [])

@spec trace_messages(pid(), (-> any()), keyword()) :: %{
  messages: [term()],
  result: term(),
  initial_mailbox: [term()],
  final_mailbox: [term()]
}

Traces messages received by pid while executing fun.

Returns a map with the traced messages in arrival order, along with the original mailbox snapshots and the wrapped function result.