Run Effect programs directly in Vitest tests with it.effect variants.
npx skills add https://github.com/agentxm/axm --skill effect-testing-agentxm
Please help me install this Agent Skill. Skill: effect-testing Source: https://github.com/agentxm/axm/tree/main/.axm/extensions/%40axm/skills/effect-testing/src Command: npx skills add https://github.com/agentxm/axm --skill effect-testing-agentxm
Effect testing with Vitest enables developers to write tests that run Effect programs directly, avoiding unnecessary bridging to Promise-land and keeping all logic inside the Effect environment for clarity and correctness.
Install @effect/vitest in your project and start writing tests that stay in the Effect-land.
High-intent search queries and answers about installing and using this skill.
Testing Effect programs in Vitest without bridging to Promise-land requires running effects directly in-context using it.effect variants. This approach keeps all logic inside the Effect environment for clarity and correctness.
To provide test layers and inject services into Effect tests, use Effect.provide within your Vitest test setup. This supplies necessary resources and dependencies directly to the effect runtime.
Asserting failure paths in Effect tests is fully supported using Effect.flip and Effect.exit. These functions validate both success and failure outcomes directly within the Vitest environment.
Running asynchronous Effect flows in Vitest is best handled using it.live and it.scoped test variants. These shapes cover asynchronous execution and resource management without leaving Effect-land.
Effect testing with Vitest fully supports TypeScript integration tests and unit tests. It enables asserting pure functional behavior directly within TypeScript projects using the Effect library.
ehtbantonGenerate Vitest configuration files for JavaScript and TypeScript projects.
rube-deDetect test frameworks, run suites with coverage, and report findings as a GitHub issue.
PaulJPhilpAutomate project setup patterns for Effect-TS applications with npm and TypeScript.
morgs32Write Effect-based tests with @effect/vitest and type-safe assertions.
