A rust-lang test harness for the ECMAScript test suite.
```toml
[dev.dependencies] test262-harness = "*" ```
```rust // lib.rs
fn testjs() { let test262path = "test262"; let harness = Harness::new(test262path).expect("failed to initialize harness"); for test in harness { println!("running test {} from {}", test.desc.id, test.path); if test.desc.negative.issome() { // maybe a parser failure // or a runtime failure } } } ```