@dsiu/rescript-mocha

ReScript bindings for Mocha testing framework. Updated for ReScript v12.

Install

npm install @dsiu/rescript-mocha mocha --save-dev 

Add to rescript.json:

{
  "bs-dependencies": [
    "@dsiu/rescript-mocha"
  ]
}

Usage

Synchronous Tests

open RescriptMocha.Mocha
module Assert = RescriptMocha.Assert

describe("Array.map", () => {
  it("should map the values", () =>
    Assert.deepEqual(Array.map([1, 2, 3], i => i * 2), [2, 4, 6])
  )

  it("should work with an empty array", () =>
    Assert.deepEqual(Array.map([], i => i * 2), [])
  )
})

Promise-based Async Tests

open RescriptMocha.Promise_

describe("Async tests", () => {
  it("should resolve after delay", () => {
    Promise.make((resolve, _reject) => {
      setTimeout(() => resolve(42), 100)->ignore
    })->Promise.then(value => {
      Assert.equal(value, 42)
      Promise.resolve()
    })
  })
})

Callback-based Async Tests

open RescriptMocha.Async

describe("Callback tests", () => {
  it("should call done when complete", done => {
    setTimeout(() => done(), 100)->ignore
  })
})

API

• Mocha - Synchronous describe, it, before, after, beforeEach, afterEach
• Promise_ - Promise-based async versions
• Async - Callback-based async versions (done-style)
• Assert - Node.js assert module bindings

Each module also provides _only and _skip variants (e.g., it_only, describe_skip).

## License and Credits

All code is licensed as MIT. See [LICENSE](LICENSE).

This project is a fork of [rescript-mocha](https://github.com/TheSpyder/rescript-mocha) by [TheSpyder](https://github.com/TheSpyder), which in turn was forked from [bs-mocha](https://github.com/reasonml-community/bs-mocha) after it was abandoned.