gistfile1.js

filter('translate', function (SOME_SERVICE) {
        return function (key, args) {
          
          function formatString(str) {
      			if(!str) {return ""};
      			var args = Array.prototype.slice.call(arguments, 1),
      			      rgx = /{(\d+)}/g;
      			if(!args.length) return str;
      			return str.replace(rgx, function(match, number) {
      					return typeof args[number] != 'undefined' ?args[number] : match;
      			});
		      }
		      
          return formatString.apply(null, [SOME_SERVICE.getText(key)].concat(args));
        }
  })
  
  
  efecte.services.service("SOME_SERVICE", ["Service", function (Service) {
	
	  var texts = {
		 "default": {} // Service
	  };
		
	  //returnstext for key, if not found returns key
	  this.getText = function (key) {
			return texts["default"] [key] || key;
	  };
}]);


describe('translate filter', function () {

    	var filter;

    	beforeEach(module('filters'));
	
	var dictionary = {
			key: 'value',
			key1: 'value1',
			key2: 'value2',
			keyParam: "Hello {0}!",
			keyParams: "A, {0}, {1}, D, {2}, F, {3}",
			keyOrder: "2-{1}, 1-{0}, 4-{3}, 3-{2}"
		};
	
	it("should be defined",  inject(function($filter) {
			expect($filter('translate')).toBeDefined();
	}));
	
	it("should value string",  inject(function($filter) {
			expect($filter('translate')("key")).toBe(dictionary.key);
			expect($filter('translate')("key1")).toBe(dictionary.key1);
			expect($filter('translate')("key2")).toBe(dictionary.key2);
	}));
	
	it("should value string with params",  inject(function($filter) {
			expect($filter('translate')("keyParam", "world" )).toBe("Hello world!");		
			expect($filter('translate')("keyParams",  ["B", "C", "E", "G"])).toBe("A, B, C, D, E, F, G");
			expect($filter('translate')("keyOrder",  [1, 2, 3, 4])).toBe("2-2, 1-1, 4-4, 3-3");
	}));	
});