How to mock angular translate filter in unit tests for directives

Below is a simple example of how you can mock the filter.

var mockTranslateFilter;beforeEach(function() {  module(function($provide) {    $provide.value('translateFilter', mockTranslateFilter);  });  mockTranslateFilter = function(value) {    return value;  };});

This is working for me. But of course you should set mockTraslateFilter value to function bewfore you will use it in another funciton.

var mockTranslateFilter;beforeEach(function() {  mockTranslateFilter = function(value) {    return value;  };  module(function($provide) {    $provide.value('translateFilter', mockTranslateFilter);  });});

even shorter, if you use ES6:

    beforeEach(angular.mock.module(progressBarComponent, ($provide) =>      {        $provide.value('translateFilter', (v) => v);    }));

This is the ES6 way:

beforeEach(angular.mock.module('myModule'), ($provide) => {    $provide.value('$translate', t => ({ then: cb => cb(t) }));}));   

This does not mock the $translate.instant method. For this you could assign the function to a variable and then assign the angular.identity method to the instantproperty.