Runs corpus cases through statifier in the calling process's node, the way a generated test module runs them: each case is one call to Statifier.Testing.Case.test_scxml/4 with the case's source, description, initial configuration and steps, so a case agrees exactly when its generated module would pass.

test_scxml/4 asserts that the active leaf states statifier produces equal the expected ones after initialization and after every step, so a case that agrees has configurations that are what statifier produced; a case that disagrees carries the assertion's own message. Cases run concurrently, as the generated modules do (async: true); a case needing a session (<send>, <invoke>, timers) needs the :statifier application started, which mix statifier.corpus does before it runs any.

A case carrying a host object runs through Mix.Statifier.Corpus.HostCase instead, which registers the case's send types with the session it starts and compares the sends handed to them with the case's expect_sends (ADR-0070 decision 5).