Unit testing in angular using IIFE throw a reference error?

Question

I am currently working on writing a simple test case for the driver script using IIFE(Immediately invoked function expression). Here is my driver script.

driver.js

(function() {
"use strict";

var app = angular
    .module("myApp", [
        "ui.bootstrap",
        "ui.sortable"
    ]);
}());

Here is my spec driver.spec.js

describe("application configuration tool driver", function() {
 it("should create an angular module named myTest", function() {
    expect(app).toEqual(angular.module("myApp"));
 });
});

When I run my spec using IIFE. I am getting a ReferenceError: app is not defined.

If I run the driver script without IIFE:

var app = angular
    .module("myApp", [
        "ui.bootstrap",
        "ui.sortable"
    ]);

My spec passes. Any thoughts on passing the spec using IIFE?

variable app is local to IIFE, but the test expect(app).toEqual(angular.module("myApp")); makes no sense to me. — PSL
– PSL, Commented Oct 20, 2015 at 20:49
I was using the variable app for creating custom directives and controllers. — Teja
– Teja, Commented Oct 20, 2015 at 20:53
@charlietfl some poorly written examples of how to use angular show var app in combination with app.controller ..., app.factory ... and unfortunately people aren't aware this is an anti-pattern. — Claies
– Claies, Commented Oct 20, 2015 at 20:54
@Claies I was reading about it recently but my intention in here was that all my controllers, directives are wrapped up in IIFE. So for a brief demo I used the variable app. — Teja
– Teja, Commented Oct 20, 2015 at 20:57

taxicala · Accepted Answer · 2015-10-20 20:54:08Z

0

You can move app back to the outer scope (if that's an option you can take, of course):

var app;
(function(app) {
    "use strict";

    app = angular
        .module("myApp", [
            "ui.bootstrap",
            "ui.sortable"
        ]);
}(app));

answered Oct 20, 2015 at 20:54

taxicala

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