hclang
Version:
Homoiconic C: Programming without a Language
133 lines • 13.4 kB
JavaScript
import { expect } from 'chai';
import { describe, it } from 'mocha';
import { evaluate } from '../../src/execute/evaluate.js';
import * as frame from '../../src/frames.js';
describe('evaluate', () => {
it('is exported', () => {
expect(evaluate).to.be.ok;
});
it('returns empty array for empty string', () => {
const result = evaluate.call('', '');
expect(result).to.be.instanceof(frame.FrameArray);
expect(result.toString()).to.equal('[]');
});
it('ignores comments', () => {
const input = '#Goodbye';
const result = evaluate(input);
expect(result.toString()).to.equal('[]');
});
it('ignores spaces', () => {
const input = ' ';
const result = evaluate(input);
expect(result.toString()).to.equal('[]');
});
describe('strings', () => {
it('quines string literal', () => {
const input = '“Hello, HC!”';
const result = evaluate(input);
expect(result.toString()).to.equal(`[${input}]`);
});
it('quines string before spaces', () => {
const input = '“Hello, HC!”';
const suffix = `${input} `;
const result = evaluate(suffix);
expect(result.toString()).to.equal(`[${input}]`);
});
it('quines string after spaces', () => {
const input = '“Hello, HC!”';
const prefix = ` ${input}`;
const result = evaluate(prefix);
expect(result.toString()).to.equal(`[${input}]`);
});
it('joins multiple strings', () => {
const input = '“Hello”“, HC!”';
const result = evaluate(input);
expect(result.toString()).to.equal('[“Hello, HC!”]');
});
it('joins around inner space', () => {
const input = '“Hello” “, HC!”';
const result = evaluate(input);
expect(result.toString()).to.equal('[“Hello, HC!”]');
});
it('joins multi-line doc-strings into strings', () => {
const input = '```\nDoc String\n```';
const result = evaluate(input);
expect(result.toString()).to.equal('[“\nDoc String\n”]');
});
it('joins around comments', () => {
const input = '“Hello”#ignore me#“, HC!”';
const result = evaluate(input);
expect(result.toString()).to.equal('[“Hello, HC!”]');
});
});
describe('grouping', () => {
it('returns FrameArray for empty []', () => {
const result = evaluate('[]');
const output = result.at(0);
expect(output).to.be.instanceof(frame.FrameArray);
});
it('returns closure for empty {}', () => {
const result = evaluate('{}');
const output = result.at(0);
expect(output).to.be.instanceof(frame.FrameLazy);
});
it('returns FrameNote for empty ()', () => {
const result = evaluate('()');
const output = result.at(0);
expect(output).to.be.instanceof(frame.FrameNote);
});
it('returns FrameArray for empty [] with spaces', () => {
const result = evaluate(' [ ] ');
const output = result.at(0);
expect(output).to.be.instanceof(frame.FrameArray);
});
it('returns FrameArray for empty [] with comments', () => {
const result = evaluate('[#comment#]');
const output = result.at(0);
expect(output).to.be.instanceof(frame.FrameArray);
});
it('returns FrameNote for mis-matched brackets', () => {
const result = evaluate('[}');
const output = result.at(0);
expect(output).to.be.instanceof(frame.FrameNote);
});
it('returns FrameNote for un-opened close bracket', () => {
const result = evaluate('}');
const output = result.at(0);
expect(output).to.be.instanceof(frame.FrameNote);
});
});
describe('numbers', () => {
it('repeats strings when applied', () => {
const input = '3 “Hello”';
const result = evaluate(input);
expect(result.toString()).to.equal('[“HelloHelloHello”]');
});
it('multiplies numbers when applied', () => {
const input = '3 2';
const result = evaluate(input);
expect(result.toString()).to.equal('[6]');
});
it('uses .+ for addition', () => {
const input = '3 .+ 2';
const result = evaluate(input);
expect(result.toString()).to.equal('[5]');
});
it('uses .%% for modulo', () => {
const input = '3 .%% 2';
const result = evaluate(input);
expect(result.toString()).to.equal('[1]');
});
it('uses .** for power', () => {
const input = '3 .** 2';
const result = evaluate(input);
expect(result.toString()).to.equal('[9]');
});
it('recognizes non-dot operators', () => {
const input = '3 + 2';
const result = evaluate(input);
expect(result.toString()).to.equal('[5]');
});
});
});
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