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Overview
This is a prototype that might resolve #624
Details
It turns out kotlinc inserts "sam wrappers" when converting Kotlin lambdas into Java functional interfaces. The sam wrappers do not have equals/hashCode, so it defeats jqwik's caching.
The fix is to move out
.flatMap { ... }out ofinlinefunction, so kotlinc no longer addssam wrappers.TODO:
DefaultTypeArbitrary.equalsshould account fortraverseArbitrary.enableRecursionsomehownet.jqwik.kotlin.api.SubtypeScope#hashCodedoes not seem to trigger when executingAnyForSubtypeOfTests. I guess it should somehowanyForSubtypeOfI hereby agree to the terms of the jqwik Contributor Agreement.