[claude-experiments] Add subtyping verification test probes#68
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[claude-experiments] Add subtyping verification test probes#68
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Add 6 verification-level tests covering: - Basic class hierarchy field access and subtype passing - Smart casts between class types (including nested) - Interface property access and subtype verification - Abstract class subtyping - Safe cast and upcast verification - Method override dispatch behavior These tests all verify cleanly individually. Note: they exhibit inter-test state contamination when run as a batch, which is a test infrastructure issue. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add 4 tests probing how shared/unique predicates interact with casts: - permissions_cast.kt: field access after as/as?/smart casts (passes) - permissions_unique.kt: mutable field access with shared params (havoc) - permissions_double_predicate.kt: double predicate inhaling (passes) - permissions_unique_subtype.kt: @unique subtype → @unique supertype FINDING: fails with "insufficient permission to access MutBox$unique" because ExtMutBox$unique isn't unfolded to extract MutBox$unique Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
testData/diagnostics/verification/subtyping/Test details
class_hierarchy_basics.ktsmart_cast_class.ktinterface_verification.ktPerson is HasNameabstract_class.ktcast_verification.ktas?safe cast, upcast always succeedsoverride_methods.ktKnown issue
These tests exhibit inter-test state contamination when run as a batch (
--tests "*Subtyping*"), but pass when run individually. This appears to be a test infrastructure issue, not a verification problem.Test plan
🤖 Generated with Claude Code