/*
 * decaffeinate suggestions:
 * DS102: Remove unnecessary code created because of implicit returns
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
describe("RequireJS namespacing", function() {
    beforeEach(() =>

        // Jasmine does not provide a way to use the typeof operator. We need
        // to create our own custom matchers so that a TypeError is not thrown.
        jasmine.addMatchers({
            requirejsTobeUndefined() {
                return {
                compare() {
                    return {
                        pass: typeof requirejs === "undefined"
                    };
                }
                };
            },

            requireTobeUndefined() {
                return {
                compare() {
                    return {
                        pass: typeof require === "undefined"
                    };
                }
                };
            },

            defineTobeUndefined() {
                return {
                compare() {
                    return {
                        pass: typeof define === "undefined"
                    };
                }
                };
            }}));


    it("check that the RequireJS object is present in the global namespace", function() {
        expect(RequireJS).toEqual(jasmine.any(Object));
        expect(window.RequireJS).toEqual(jasmine.any(Object));
    });

    it("check that requirejs(), require(), and define() are not in the global namespace", function() {

        // The custom matchers that we defined in the beforeEach() function do
        // not operate on an object. We pass a dummy empty object {} not to
        // confuse Jasmine.
        expect({}).requirejsTobeUndefined();
        expect({}).requireTobeUndefined();
        expect({}).defineTobeUndefined();
        expect(window.requirejs).not.toBeDefined();
        expect(window.require).not.toBeDefined();
        expect(window.define).not.toBeDefined();
    });
});


describe("RequireJS module creation", function() {
    let inDefineCallback = undefined;
    let inRequireCallback = undefined;
    it("check that we can use RequireJS to define() and require() a module", function(done) {
        const d1 = $.Deferred();
        const d2 = $.Deferred();
        // Because Require JS works asynchronously when defining and requiring
        // modules, we need to use the special Jasmine functions runs(), and
        // waitsFor() to set up this test.
        const func = function() {

            // Initialize the variable that we will test for. They will be set
            // to true in the appropriate callback functions called by Require
            // JS. If their values do not change, this will mean that something
            // is not working as is intended.
            inDefineCallback = false;
            inRequireCallback = false;

            // Define our test module.
            RequireJS.define("test_module", [], function() {
                inDefineCallback = true;

                d1.resolve();

                // This module returns an object. It can be accessed via the
                // Require JS require() function.
                return {module_status: "OK"};
            });


            // Require our defined test module.
            return RequireJS.require(["test_module"], function(test_module) {
                inRequireCallback = true;

                // If our test module was defined properly, then we should
                // be able to get the object it returned, and query some
                // property.
                expect(test_module.module_status).toBe("OK");

                return d2.resolve();
            });
        };

        func();
        // We will wait before checking if our module was defined and that we were able to require() the module.
        $.when(d1, d2).done(function() {
            // The final test behavior
            expect(inDefineCallback).toBeTruthy();
            expect(inRequireCallback).toBeTruthy();
        }).always(done);
    });
});