Glen Whitney
9fb3aa2959
Allows dependencies to be economically expressed and used. For example, see the new definition of subtract. Credit for the basic idea goes to James Drew, see https://stackoverflow.com/a/41525264 Resolves #21.
22 lines
749 B
JavaScript
22 lines
749 B
JavaScript
import assert from 'assert'
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import PocomathInstance from '../../src/core/PocomathInstance.mjs'
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const pi = new PocomathInstance('dummy')
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describe('PocomathInstance', () => {
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it('creates an instance that can define typed-functions', () => {
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pi.install({add: {'any,any': () => (a,b) => a+b}})
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assert.strictEqual(pi.add(2,2), 4)
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assert.strictEqual(pi.add('Kilroy', 17), 'Kilroy17')
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assert.strictEqual(pi.add(1, undefined), NaN)
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assert.throws(() => pi.add(1), TypeError)
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})
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it('reserves certain function names', () => {
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assert.throws(
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() => pi.install({install: {any: [[], x => x]}}), SyntaxError)
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assert.throws(
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() => pi.install({_foo: {any: [[], x => x]}}), SyntaxError)
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})
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})
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