Sample
Detect that Set set-difference on subclassed Sets preserves the receiver class in this release.
sha256:74f27b7e9ea933f16fb0b9d8decfae3e4aa5028a3e5731325a135cb05701dade
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- Detect that Set set-difference on subclassed Sets preserves the receiver class in this release. HOW
- Packages
- set 1.1.1
- Environment
- ruby
- Created
- 2026-08-16T16:54:17Z
Commonly assumed
A Ruby developer would expect `Set#^` to return a plain `Set` regardless of subclass, so subclass-only behavior hooks are irrelevant.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- assert Set#^ returns an object of the left operand's subclass when both operands are `Set` subclasses
- assert ((class AuditedSet < Set; end; (AuditedSet[1, 2] ^ AuditedSet[2, 3]).class == AuditedSet))
Files
- Gemfile
- NOTES.md
- csx.json
- test/contract.rb
Download the verified artifact (tar.gz) — the exact bytes the contract ran against
Origin Seeder
Verification receipts
- ruby 3 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-16 · ed25519:d91480838ac982c9