test_calculator.js

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

ChromeUtils.defineESModuleGetters(this, {

  Calculator: "resource:///modules/UrlbarProviderCalculator.sys.mjs",

});

const FORMULAS = [

  ["1+1", 2],

  ["3+4*2/(1-5)", 1],

  ["39+4*2/(1-5)", 37],

  ["(39+4)*2/(1-5)", -21.5],

  ["4+-5", -1],

  ["-5*6", -30],

  ["-5.5*6", -33],

  ["-5.5*-6.4", 35.2],

  ["-6-6-6", -18],

  ["6-6-6", -6],

  [".001 /2", 0.0005],

  ["(0-.001)/2", -0.0005],

  ["-.001/(0-2)", 0.0005],

  ["1000000000000000000000000+1", 1e24],

  ["1000000000000000000000000-1", 1e24],

  ["1e+30+10", 1e30],

  ["1e+30*10", 1e31],

  ["1e+30/100", 1e28],

  ["10/1000000000000000000000000", 1e-23],

  ["10/-1000000000000000000000000", -1e-23],

  ["1,500.5+2.5", 1503], // Ignore commas when using decimal seperators

  ["1,5+2,5", 4], // Support comma seperators

  ["1.500,5+2,5", 1503], // Ignore periods when using comma decimal seperators

];

add_task(function test() {

  for (let [formula, result] of FORMULAS) {

    let postfix = Calculator.infix2postfix(formula);

    Assert.equal(

      Calculator.evaluatePostfix(postfix),

      result,

      `${formula} should equal ${result}`

);

});