Using angular ($ q) functions in protractor

Question

I want to use the $ q service for angular in my e2e tests. (I want to get texts from several elements via getText (), which returns a promise. After all promises are resolved, I want to check the list. Therefore, I want to use $ q.all (), etc.).

angular.injector(['myApp']).get('$q'); result: "ReferenceError: angular not defined"

Installing angular through node, and then var angular = require("angularjs");leading to the error "Error: cannot find the module" angular "

Also, inserting browser.waitForAngular()there does not help.

Using syntax inject(function($q) {})has the same problem.

How can I use such angular functions in the protractor?

---

edit:

Here is the most naive version of what I want to achieve

var collectEntries = function(containers) {
    var entries = {};
    containers.each(function (container) {
        var title = container.element(by.tagName('h2'));
        title.getText().then(function (text) {
            var key = getSomeKey();
            var entry = processEntry(text);
            entries[key] = entry;
        });
    });
    return entries;
};

, - . . , , , , getText promises .

.

var deferred = $q.defer();
$q.all(getTextPromises).then(function () {
    deferred.resolve(entries);
});
return deferred.promise;

Answer 1

containers elementFinders? (.. var containers = [element(by.x), element(by.y), element(by.z)]):

q: ( q package.json)

    var q = require('q');
    var collectEntries = function(containers) {
        var entries = {};
        containers.each(function (container) {
            var deferred = q.defer();
            var title = container.element(by.tagName('h2'));
            title.getText().then(function (text) {
                deferred.resolve(processEntry(text));
            });
            entries[getSomeKey()] = deferred.promise();
        });
        return q.all(entries);
    };

    expect(collectEntries).toBe({key1: 'title1', key2: 'title2'})

( , q , , ):

    var collectEntries = function(containers) {
        var entries = {};
        containers.each(function (container) {
            entries[getSomeKey()] = container.element(by.tagName('h2')).
                getText().then(function (text) {
                    return processEntry(text);
                });
        });
        return protractor.promise.fullyResolved(entries);
    };

    expect(collectEntries).toBe({key1: 'title1', key2: 'title2'})

containers (.. var containers = element.all(by.xyz)), :

    var collectEntries = function(containers) {
        return containers.reduce(function(entries, elem) {
          return elem.getText().then(function(text) {
            entries[getSomeKey()] = processEntry(text);
            return entries;
          });
        }, {});
    };

    expect(collectEntries).toBe({key1: 'title1', key2: 'title2'})