One test.

src/js/services/rateService.spec.js

@@ -0,0 +1,53 @@
+describe('rateService', function() {
+  var $httpBackend, rateService, requestHandler;
+
+  beforeEach(function() {
+    module('ngLodash');
+    module('copayApp.services');
+
+    inject(function($injector){
+      $httpBackend = $injector.get('$httpBackend');
+
+      requestHandler = $httpBackend.when('GET', 'https://www.bitcoin.com/special/rates.json')
+                        .respond([
+                            {
+                                "code": "BTC",
+                                "name": "Bitcoin",
+                                "rate": 1
+                            },
+                            {
+                                "code": "BCH_BTC",
+                                "name": "Bitcoin Cash",
+                                "rate": 6.739397
+                            },
+                            {
+                                "code": "USD",
+                                "name": "US Dollar",
+                                "rate": 7602.04
+                            }
+                        ]);
+                
+      rateService = $injector.get('rateService');
+      
+      $httpBackend.flush();
+    });
+  });
+
+  afterEach(function() {
+    $httpBackend.verifyNoOutstandingExpectation();
+    $httpBackend.verifyNoOutstandingRequest();
+  });
+
+  it('get rates', function() {
+
+    $httpBackend.expectGET('https://www.bitcoin.com/special/rates.json');
+
+    rateService.updateRates();
+
+    $httpBackend.flush();
+
+    var usdRate = rateService.getRate('USD');
+
+    expect(usdRate).toEqual(7602.04);
+  });
+});