Fix headers in modern browsers.

Gemfile.lock

@@ -1,41 +1,44 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    childprocess (0.5.3)
+    childprocess (0.5.9)
       ffi (~> 1.0, >= 1.0.11)
-    cmdparse (2.0.6)
-    ffi (1.9.3)
-    highline (1.6.21)
-    jasmine (2.0.2)
+    cmdparse (3.0.1)
+    domain_name (0.5.20160826)
+      unf (>= 0.0.5, < 1.0.0)
+    ffi (1.9.14)
+    highline (1.7.8)
+    http-cookie (1.0.3)
+      domain_name (~> 0.5)
+    jasmine (2.0.3)
       jasmine-core (~> 2.0.0)
       phantomjs
       rack (>= 1.2.1)
       rake
-    jasmine-core (2.0.1)
-    jasmine_selenium_runner (0.2.0)
-      jasmine (~> 2.0.0.alpha)
+    jasmine-core (2.0.2)
+    jasmine_selenium_runner (2.4.0)
+      jasmine (~> 2.0)
       sauce-connect
       selenium-webdriver (~> 2.35)
-    json (1.8.1)
-    mime-types (1.25.1)
-    multi_json (1.10.1)
+    json (1.8.3)
+    mime-types (2.99.3)
     net-http-persistent (2.9.4)
-    net-ssh (2.9.1)
+    net-ssh (3.2.0)
     net-ssh-gateway (1.2.0)
       net-ssh (>= 2.6.5)
-    parallel (1.1.2)
-    parallel_tests (0.16.6)
+    netrc (0.11.0)
+    parallel (1.9.0)
+    parallel_tests (1.3.7)
       parallel
-    phantomjs (1.9.7.1)
-    rack (1.5.2)
-    rake (10.3.2)
-    rdoc (4.1.1)
-      json (~> 1.4)
-    rest-client (1.6.8)
-      mime-types (~> 1.16)
-      rdoc (>= 2.4.2)
-    rubyzip (1.1.6)
-    sauce (3.4.9)
+    phantomjs (2.1.1.0)
+    rack (2.0.1)
+    rake (11.3.0)
+    rest-client (1.8.0)
+      http-cookie (>= 1.0.2, < 2.0)
+      mime-types (>= 1.16, < 3.0)
+      netrc (~> 0.7)
+    rubyzip (1.2.0)
+    sauce (3.7.1)
       childprocess (>= 0.1.6)
       cmdparse (>= 2.0.2)
       highline (>= 1.5.0)
@@ -43,21 +46,23 @@ GEM
       net-http-persistent
       net-ssh
       net-ssh-gateway
-      parallel_tests (= 0.16.6)
+      parallel_tests (>= 1.1.1, <= 1.3.7)
       rest-client
       sauce_whisk (~> 0.0.11)
       selenium-webdriver (>= 0.1.2)
-    sauce-connect (3.4.1)
-      sauce (~> 3.4)
-    sauce_whisk (0.0.13)
+    sauce-connect (3.6.2)
+      sauce (~> 3.5)
+    sauce_whisk (0.0.21)
       json (~> 1.8.1)
-      rest-client (~> 1.6.7)
-    selenium-webdriver (2.42.0)
-      childprocess (>= 0.5.0)
-      multi_json (~> 1.0)
+      rest-client (~> 1.8.0)
+    selenium-webdriver (2.53.4)
+      childprocess (~> 0.5)
       rubyzip (~> 1.0)
-      websocket (~> 1.0.4)
-    websocket (1.0.7)
+      websocket (~> 1.0)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.7.2)
+    websocket (1.2.3)
 
 PLATFORMS
   ruby
@@ -68,4 +73,4 @@ DEPENDENCIES
   rake
 
 BUNDLED WITH
-   1.10.1
+   1.12.2

lib/mock-ajax.js

@@ -384,8 +384,12 @@ getJasmineRequireObj().AjaxFakeRequest = function(eventBusFactory) {
       },
 
       getResponseHeader: function(name) {
+        var resultHeader = null;
+        if (!this.responseHeaders) {
+          return resultHeader;
+        }
+
         name = name.toLowerCase();
-        var resultHeader;
         for(var i = 0; i < this.responseHeaders.length; i++) {
           var header = this.responseHeaders[i];
           if (name === header.name.toLowerCase()) {
@@ -400,6 +404,10 @@ getJasmineRequireObj().AjaxFakeRequest = function(eventBusFactory) {
       },
 
       getAllResponseHeaders: function() {
+        if (!this.responseHeaders) {
+          return null;
+        }
+
         var responseHeaders = [];
         for (var i = 0; i < this.responseHeaders.length; i++) {
           responseHeaders.push(this.responseHeaders[i].name + ': ' +

spec/fakeRequestSpec.js

@@ -112,6 +112,16 @@ describe('FakeRequest', function() {
     expect(request.requestHeaders).toEqual({});
   });
 
+  it('getResponseHeader returns null, if no response has been received', function() {
+    var request = new this.FakeRequest();
+    expect(request.getResponseHeader('XY')).toBe(null);
+  });
+
+  it('getAllResponseHeaders returns null, if no response has been received', function() {
+    var request = new this.FakeRequest();
+    expect(request.getAllResponseHeaders()).toBe(null);
+  });
+
   describe('managing readyState', function() {
     beforeEach(function() {
       this.request = new this.FakeRequest();

spec/mock-ajax-toplevel-spec.js

@@ -321,6 +321,10 @@ describe("Jasmine Mock Ajax (for toplevel)", function() {
         expect(response.getResponseHeader('X-Header')).toBe('header value 1, header value 2');
       });
 
+      it("returns null, if header does not exist", function() {
+        expect(response.getResponseHeader('X-Does-Not-Exist')).toBe(null);
+      });
+
       it("getAllResponseHeaders should return all values", function () {
         expect(response.getAllResponseHeaders()).toBe([
           "X-Header: header value 1",

src/fakeRequest.js

@@ -207,8 +207,12 @@ extend(FakeXMLHttpRequest, {
       },
 
       getResponseHeader: function(name) {
+        var resultHeader = null;
+        if (!this.responseHeaders) {
+          return resultHeader;
+        }
+
         name = name.toLowerCase();
-        var resultHeader;
         for(var i = 0; i < this.responseHeaders.length; i++) {
           var header = this.responseHeaders[i];
           if (name === header.name.toLowerCase()) {
@@ -223,6 +227,10 @@ extend(FakeXMLHttpRequest, {
       },
 
       getAllResponseHeaders: function() {
+        if (!this.responseHeaders) {
+          return null;
+        }
+
         var responseHeaders = [];
         for (var i = 0; i < this.responseHeaders.length; i++) {
           responseHeaders.push(this.responseHeaders[i].name + ': ' +