v0.25.0

peppy generates mock and fixtures test surfaces for Rust and Python nodes, plus a Testing guide and a scaffolded harness.

Released on August 19, 2026

peppy now emits mock and fixtures test surfaces into the generated peppygen package for both Rust and Python nodes, so you can test your nodes against generated mocks and fixtures.
Multi-instance mock slots now carry explicit instance ids, so tests can address each instance individually.
Optional pairing slots gain a vacant-boot knob for booting a node with the optional peer left unpaired.
Generated mocks honor the per-interface consumer link ids you declare.
peppy node init now scaffolds a lib/main split and a harness smoke test for new nodes.
A new Testing guide covers writing tests with mocks, teardown, and the cardinality knobs.