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Get Started Free →Use when adding or testing flutter_rust_bridge feature flags, especially flags that require coverage for both enabled and disabled states or should have package-level config plus item-level #[frb(...)] overrides.
| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-02 | ✗→✓ | ▲ Improved | -61% | 0% |
| case-03 | ✗→✓ | ▲ Improved | -60% | 0% |
| case-14 | ✗→✓ | ▲ Improved | -70% | 0% |
| case-07 | ✗→✓ | ▲ Improved | -64% | 0% |
| case-09 | ✗→✓ | ▲ Improved | -68% | 0% |
Use this skill when adding a feature flag, changing a feature flag, or writing coverage for a feature flag.
For feature flags requiring coverage for both enabled and disabled states:
flutter_rust_bridge.yaml.#[frb(...)] override when the behavior can reasonably be scoped to a Rust item.In frb_example/pure_dart, prefer tests that use the item-level #[frb(...)] override so enabled and disabled cases are both exercised in the same package.
Do not rely only on package-level config differences when both states can be covered clearly with item-level Rust APIs.
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