import type { VmRecord } from '@mirascript/mirascript';
import { Evaluator, Expression, Scope } from '../dist/index.js';

const e = new Evaluator();
const s = new Scope((k) => (k === 'v' ? { a: 2, b: 1, c: undefined } : undefined));

describe('Evaluator should provided functions', () => {
    it('should eval keys/values/entries', () => {
        expect(e.evaluate(Expression('keys(v)'), s)).toEqual(['a', 'b', 'c']);
        expect(e.evaluate(Expression('values(v)'), s)).toEqual([2, 1, undefined]);
        expect(e.evaluate(Expression('entries(v)'), s)).toEqual([
            { 0: 'a', 1: 2 },
            { 0: 'b', 1: 1 },
            { 0: 'c', 1: null },
        ]);
    });

    it('should eval type', () => {
        expect(e.evaluate(Expression('type(exp) == "function"'), s)).toBe(true);
        expect(e.evaluate(Expression('type(exp) == "function"'), s)).toBe(true);
    });
});