pocomath/test/_PocomathInstance.mjs

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import assert from 'assert'
import PocomathInstance from '../PocomathInstance.mjs'
describe('PocomathInstance', () => {
it('creates an instance that can define typed-functions', () => {
const pi = new PocomathInstance('dummy')
pi.install({'add': {'any,any': [[], (a,b) => a+b]}})
assert.strictEqual(pi.add(2,2), 4)
assert.strictEqual(pi.add('Kilroy', 17), 'Kilroy17')
assert.strictEqual(pi.add(1, undefined), NaN)
assert.throws(() => pi.add(1), TypeError)
})
})