markdown-it/test/utils.mjs

import { assert } from 'chai';
import utils from '../lib/common/utils.mjs';


describe('Utils', function () {

  it('fromCodePoint', function () {
    const fromCodePoint = utils.fromCodePoint;

    assert.strictEqual(fromCodePoint(0x20), ' ');
    assert.strictEqual(fromCodePoint(0x1F601), '😁');
  });

  it('isValidEntityCode', function () {
    const isValidEntityCode = utils.isValidEntityCode;

    assert.strictEqual(isValidEntityCode(0x20), true);
    assert.strictEqual(isValidEntityCode(0xD800), false);
    assert.strictEqual(isValidEntityCode(0xFDD0), false);
    assert.strictEqual(isValidEntityCode(0x1FFFF), false);
    assert.strictEqual(isValidEntityCode(0x1FFFE), false);
    assert.strictEqual(isValidEntityCode(0x00), false);
    assert.strictEqual(isValidEntityCode(0x0B), false);
    assert.strictEqual(isValidEntityCode(0x0E), false);
    assert.strictEqual(isValidEntityCode(0x7F), false);
  });

  /*it('replaceEntities', function () {
    var replaceEntities = utils.replaceEntities;

    assert.strictEqual(replaceEntities('&'), '&');
    assert.strictEqual(replaceEntities(' '), ' ');
    assert.strictEqual(replaceEntities(' '), ' ');
    assert.strictEqual(replaceEntities('&&'), '&&');

    assert.strictEqual(replaceEntities('&am;'), '&am;');
    assert.strictEqual(replaceEntities('�'), '�');
  });*/

  it('assign', function () {
    const assign = utils.assign;

    assert.deepEqual(assign({ a: 1 }, null, { b: 2 }), { a: 1, b: 2 });
    assert.throws(function () {
      assign({}, 123);
    });
  });

  it('escapeRE', function () {
    const escapeRE = utils.escapeRE;

    assert.strictEqual(escapeRE(' .?*+^$[]\\(){}|-'), ' \\.\\?\\*\\+\\^\\$\\[\\]\\\\\\(\\)\\{\\}\\|\\-');
  });

  it('isWhiteSpace', function () {
    const isWhiteSpace = utils.isWhiteSpace;

    assert.strictEqual(isWhiteSpace(0x2000), true);
    assert.strictEqual(isWhiteSpace(0x09), true);

    assert.strictEqual(isWhiteSpace(0x30), false);
  });

  it('isMdAsciiPunct', function () {
    const isMdAsciiPunct = utils.isMdAsciiPunct;

    assert.strictEqual(isMdAsciiPunct(0x30), false);

    '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'.split('').forEach(function (ch) {
      assert.strictEqual(isMdAsciiPunct(ch.charCodeAt(0)), true);
    });
  });

  it('unescapeMd', function () {
    const unescapeMd = utils.unescapeMd;

    assert.strictEqual(unescapeMd('\\foo'), '\\foo');
    assert.strictEqual(unescapeMd('foo'), 'foo');

    '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'.split('').forEach(function (ch) {
      assert.strictEqual(unescapeMd('\\' + ch), ch);
    });
  });

});