openhoat / deno-stej

Make Deno tests in the Jest way

Stej

Make Deno tests in the Jest way.

This module allow you to write tests like you did with Jest.

Getting started

Simply use the provided wrapper methods: describe, test

import { describe, expect, test } from 'https://deno.land/x/stej/mod.ts'

const isString = (o: unknown) => typeof o === 'string'

describe('Sample1', async () => {
  await describe('isString', async () => {
    await test({ given: 'a string', should: 'return true' }, () => {
      expect(isString('foo')).toBe(true)
    })
    await test({ given: 'a number', should: 'return false' }, () => {
      expect(isString(345)).toBe(false)
    })
  })
})

describe and test description supports a string or { given, should } object

Run the test:

$ deno test demo/sample1.test.ts
Check file:///home/openhoat/dev/rnd/deno/stej/demo/sample1.test.ts
running 1 test from ./demo/sample1.test.ts
Sample1 ...
  isString ...
    given: a string
    should: return true ... ok (4ms)
    given: a number
    should: return false ... ok (3ms)
  isString ... ok (12ms)
Sample1 ... ok (18ms)

ok | 1 passed (3 steps) | 0 failed (30ms)

$ █

License

The MIT License