hclang
Version:
Homoiconic C: Programming without a Language
45 lines • 4.7 kB
JavaScript
import { expect } from 'chai';
import { describe, it, beforeEach } from 'mocha';
import { EvalPipe } from '../../src/execute/eval-pipe.js';
import * as frame from '../../src/frames.js';
describe('EvalPipe', () => {
const strA = new frame.FrameString('A');
const strB = new frame.FrameString('B');
const expr = new frame.FrameExpr([strA, strB]);
const value = new frame.FrameString('Value');
const context = { key: value };
let out;
let pipe;
beforeEach(() => {
out = new frame.FrameArray([], context);
pipe = new EvalPipe(out);
});
it('is exported', () => {
expect(EvalPipe).to.be.ok;
});
it('is constructed from an out parameter', () => {
expect(pipe).to.be.ok;
});
it('evaluates arguments', () => {
const result = pipe.call(expr);
expect(result.toString()).to.equal('“AB”');
});
it('evaluates symbols in context', () => {
const symbol = new frame.FrameSymbol('key');
const result = pipe.call(symbol);
expect(result.toString()).to.equal(value.toString());
});
it('evaluates symbols in expressions', () => {
const symbol = new frame.FrameSymbol('key');
const wrap = new frame.FrameExpr([symbol]);
const result = pipe.call(wrap);
expect(result.toString()).to.equal(value.toString());
});
it('stores result in out', () => {
expect(out.size()).to.equal(0);
const result = pipe.call(expr);
expect(out.size()).to.equal(1);
expect(out.at(0)).to.equal(result);
});
});
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