mathjs/test/expression/function/parser.test.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

var assert = require('assert');
var math = require('../../../index');
var Parser = math.expression.Parser;

describe('parser', function() {

  it('should create a parser', function() {
    var parser = math.parser();

    assert(parser instanceof Parser);
  });

  it('should LaTeX parser', function () { //This doesn't really make sense in a way
    var expression = math.parse('parser()');
    assert.equal(expression.toTex(), '\\mathrm{parser}\\left(\\right)');
  });

});