Merge pull request #121 from xemle/instantiate-interceptors-only-once

Instantiate interceptor only once

Author: atecarlos

lib/httpMock.js

@@ -15,15 +15,17 @@ function mockTemplate() {
 
         $provide.decorator('$http', ['$delegate', '$q', '$injector', function($http, $q, $injector) {
 
-        var interceptors = $httpProvider.interceptors;
+        var interceptors = [];
 
-        function getInterceptor(interceptorExpression) {
+        angular.forEach($httpProvider.interceptors, function(interceptorExpression) {
+            var interceptor;
             if (angular.isString(interceptorExpression)) {
-                return $injector.get(interceptorExpression);
+                interceptor = $injector.get(interceptorExpression);
             } else {
-                return $injector.invoke(interceptorExpression);
+                interceptor = $injector.invoke(interceptorExpression);
             }
-        }
+            interceptors.push(interceptor);
+        });
 
         function transformData(data, headers, status, fns) {
             if (typeof fns === 'function') {
@@ -50,7 +52,7 @@ function mockTemplate() {
 
         function getTransformedAndInterceptedRequestConfig(requestConfig) {
             for (var i = 0; i < interceptors.length; i++) {
-                var interceptor = getInterceptor(interceptors[i]);
+                var interceptor = interceptors[i];
 
                 if (interceptor.request) {
                     $q.when(interceptor.request(requestConfig)).then(function(interceptedRequestConfig){
@@ -84,7 +86,7 @@ function mockTemplate() {
 
             // Response interceptors are invoked in reverse order as per docs
             for (var i = interceptors.length - 1; i >= 0; i--) {
-                var interceptor = getInterceptor(interceptors[i]);
+                var interceptor = interceptors[i];
 
                 if (interceptor.response && statusIsSuccessful(response.status)) {
                     $q.when(interceptor.response(response)).then(function(interceptedResponse){

tests/interceptors.test.js

@@ -43,6 +43,18 @@ describe('interceptors', function(){
 			}
 		});
 
+		$httpProvider.interceptors.push(function(){
+			var count = 0;
+			return {
+				response: function(response){
+					count++;
+					response.headers['stateful-anonymous-response-count'] = count;
+
+					return response;
+				}
+			}
+		});
+
 		$httpProvider.interceptors.push(['$q', function($q){
 			return {
 				request: function(config){
@@ -115,6 +127,21 @@ describe('interceptors', function(){
 		});
 	});
 
+	it('allows for intercepts through stateful anonymous factory', function(done){
+		http({
+			method: 'GET',
+			url: 'test-url.com/anonymous-intercept'
+		}).then(function(){
+			return http({
+				method: 'GET',
+				url: 'test-url.com/anonymous-intercept'
+			});
+		}).then(function(response){
+			expect(response.headers['stateful-anonymous-response-count']).toBeGreaterThan(1);
+			done();
+		});
+	});
+
 	it('allows for intercepts that return a promise from a request', function(done){
 		http({
 			method: 'POST',