mocha init timeout with mocha-phantomjs

问题

I have the following testrunner.html:

<html>
  <head>
    <title>Specs</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <link rel="stylesheet" href="/content/css/mocha.css" />
    <script>
        function assert(expr, msg) {
            if (!expr) throw new Error(msg || 'failed');
        }
    </script>

    <script src="/client/lib/require.js" type="text/javascript" data-main="/client/specs/_runner.js"></script>

  </head>
  <body>
    <div id="mocha"></div>
  </body>
</html>

The _runner.js looks like this:

// Configure RequireJS
require.config({
    baseUrl: '/client',
    urlArgs: "v=" + (new Date()).getTime()
});

// Require libraries
require(['require', 'lib/chai', 'lib/mocha'], function (require, chai) {

    // Chai
    assert = chai.assert;
    should = chai.should();
    expect = chai.expect;

    // Mocha
    mocha.setup('bdd');


    // Require base tests before starting
    require(['specs/stringcalculator.specs'], function (person) {
        mocha.setup({ globals: ['hasCert'] });
        // Start runner
        if (window.mochaPhantomJS) {
            mochaPhantomJS.run();
        }
        else { mocha.run(); }
    });

});

The StringCalculator.specs.js is this:

define(['app/model/StringCalculator'], function () {

    describe("StringCalculator", function () {

        describe("when an empty string is passed in", function () {
            it("returns 0", function () {
                var result = StringCalculator.add("");
                assert(result === 0);
            });
        });

        describe("when a number is passed in", function () {
            it("returns the number", function () {
                var result = StringCalculator.add("2");
                assert(result === 2);
            });
        });

        describe("when string is passed in", function () {
            it("returns NaN", function () {
                var result = StringCalculator.add("a");
                assert(isNaN(result));
            });
        });

        describe("when '1,2' is passed in", function () {
            it("returns 3", function () {
                var result = StringCalculator.add("1,2");
                assert(result === 3);
            });
        });
    });
});

And this is the StringCalculator.js itself (from the mocha samples):

define([], function() {
    window.StringCalculator = StringCalculator = {
        add: function(inputString) {
            if (inputString === '') {
                return 0;
            }

            var result = 0;
            var inputStrings = inputString.split(',');

            for (var i = 0; i < inputStrings.length; i++) {
                result += parseInt(inputStrings[i]);
            }

            return result;
        }
    }
});

When running the specs in a browser calling testrunner.html, everything works as expected. When running mocha-phantomjs client/specs/testrunner.html on OS X, I get the following error:

Failed to start mocha: Init timeout

What may I'm missing here?

I also tried mocha-phantomjs http://httpjs.herokuapp.com which fails with the same error.

Update: If I'm calling mocha-phantomjs http://localhost:81/client/specs/testrunner.html I also get the following error on the console:

RangeError: Maximum call stack size exceeded.

http://localhost:81/client/lib/chai.js?v=123423553533535:2601
Failed to start mocha: Init timeout

回答1:

I was getting the same Failed to start mocha error when running mocha-phantomjs through the grunt-mocha-phantomjs npm package. Found the solution here.

Repeated here for reference:

To run with mocha-phantomjs, change

mocha.run();

if (mochaPhantomJS) {
  mochaPhantomJS.run();
}
else {
  mocha.run();
}

回答2:

This file shows how to use it.

~~And for me, NodeJS 0.10.x does not seem to work with it. After switching to NodeJS 0.8.8, everything works as expected.~~

Using the current versions of mocha-phantomjs and PhantomJS now everything works fine.

回答3:

Thanks for this info, I tried the above but it failed in browser saying "mochaPhantomJS is undefined". A quick tweak as per below and it works well:

if(typeof(mochaPhantomJS)!=="undefined")
{
  mochaPhantomJS.run();
}
else
{
  mocha.run();
}

来源：https://stackoverflow.com/questions/15657458/mocha-init-timeout-with-mocha-phantomjs

标签

javascript

tdd

phantomjs

mocha