Lambda calculus-like library written in TypeScript.
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jlc/test/core.spec.ts

24 lines
637 B

import { describe, expect, it } from '@jest/globals';
import { $, _, cnst, id, undef } from '../src/core';
describe('id', () => {
it('returns first argument', () => {
expect($(id._(_('first')))).toBe('first');
});
});
describe('cnst', () => {
it('returns first argument after receiving second', () => {
expect($(cnst._(_('first'))._(_('second')))).toBe('first');
});
it('ignores second argument', () => {
expect($(cnst._(_('first'))._(undef))).toBe('first');
});
});
describe('pipe', () => {
it.failing('applies both functions in order', () => {
expect('Not implemented').toBe('Implemented');
});
});