feotest is a probabilistic testing framework for Rust. It brings the same statistical methodology as punit — repeated trials, confidence intervals, threshold-based verdicts — to the Rust ecosystem, built from the ground up as idiomatic Rust rather than a port.
Coming soon
feotest is in active development and its public release is imminent. The repository will be available at github.com/javai-org/feotest once published.
Why Rust
Rust’s ownership model, zero-cost abstractions, and strong type system make it a natural fit for infrastructure and safety-critical systems — exactly the kind of services where probabilistic testing matters most. feotest is designed to feel native to Rust developers, following the conventions and idioms of the Rust testing ecosystem.
Relationship to punit
feotest implements the same statistical methodology as punit, verified against the same javai-R reference datasets. The two frameworks share a specification — what to compute — but not an implementation. Where punit uses JUnit 5 extensions and Java annotations, feotest uses Rust macros, traits, and the language’s native test harness.