Uncaught TypeError: Cannot read property 'should' of null

[ghost]

i try to use mocha for testing stuff. Consider the following code.

var requirejs = require('requirejs');

requirejs.config({
    //Pass the top-level main.js/index.js require
    //function to requirejs so that node modules
    //are loaded relative to the top-level JS file.
    nodeRequire: require
});

describe('Testing controller', function () {

    it('Should be pass', function (done) {
            (4).should.equal(4);
            done();
    });

    it('Should avoid name king', function (done) {
        requirejs(['../server/libs/validate_name'], function (validateName) {
            var err_test, accountExists_test, notAllow_test, available_test;
            validateName('anu', function (err, accountExists, notAllow, available) {
                accountExists.should.not.be.true;
                done();
            });

        });
    });

});

as output i've got

$ make test
./node_modules/.bin/mocha \
                --reporter list

  . Testing controller Should be pass: 0ms
  1) Testing controller Should avoid name king

  1 passing (560 ms)
  1 failing

  1) Testing controller Should avoid name anu:
     Uncaught TypeError: Cannot read property 'should' of null
      at d:\townspeech\test\test.spec.js:23:30
      at d:\townspeech\server\libs\validate_name.js:31:20
      at d:\townspeech\test\test.spec.js:22:13
      at Object.context.execCb (d:\townspeech\node_modules\requirejs\bin\r.js:1869:33)
      at Object.Module.check (d:\townspeech\node_modules\requirejs\bin\r.js:1105:51)
      at Object.Module.enable (d:\townspeech\node_modules\requirejs\bin\r.js:1376:22)
      at Object.Module.init (d:\townspeech\node_modules\requirejs\bin\r.js:1013:26)
      at null._onTimeout (d:\townspeech\node_modules\requirejs\bin\r.js:1646:36)
      at Timer.listOnTimeout [as ontimeout] (timers.js:110:15)

make: *** [test] Error 1

the second scenario it seems like that the should js can attach the object. Why?

[btd]

Are you sure that accountExists is not null? Could you log its value before line 23?

[travisjeffery]

gonna close this. @kostonstyle, reopen and leave a comment if you discovered this wasn't your fault, hopefully with a reproducible small test case.