1 files changed, 19 insertions, 6 deletions
diff --git a/spec/javascripts/merge_request_tabs_spec.js b/spec/javascripts/merge_request_tabs_spec.js
index 9916d2c1e21..7b910282cc8 100644
--- a/spec/javascripts/merge_request_tabs_spec.js
+++ b/spec/javascripts/merge_request_tabs_spec.js
@@ -12,6 +12,15 @@ import '~/notes';
 import 'vendor/jquery.scrollTo';
 
 (function () {
+  // TODO: remove this hack!
+  // PhantomJS causes spyOn to panic because replaceState isn't "writable"
+  var phantomjs;
+  try {
+    phantomjs = !Object.getOwnPropertyDescriptor(window.history, 'replaceState').writable;
+  } catch (err) {
+    phantomjs = false;
+  }
+
   describe('MergeRequestTabs', function () {
     var stubLocation = {};
     var setLocation = function (stubs) {
@@ -28,9 +37,11 @@ import 'vendor/jquery.scrollTo';
       this.class = new gl.MergeRequestTabs({ stubLocation: stubLocation });
       setLocation();
 
-      this.spies = {
-        history: spyOn(window.history, 'replaceState').and.callFake(function () {})
-      };
+      if (!phantomjs) {
+        this.spies = {
+          history: spyOn(window.history, 'replaceState').and.callFake(function () {})
+        };
+      }
     });
 
     afterEach(function () {
@@ -197,9 +208,11 @@ import 'vendor/jquery.scrollTo';
           pathname: '/foo/bar/merge_requests/1'
         });
         newState = this.subject('commits');
-        expect(this.spies.history).toHaveBeenCalledWith({
-          url: newState
-        }, document.title, newState);
+        if (!phantomjs) {
+          expect(this.spies.history).toHaveBeenCalledWith({
+            url: newState
+          }, document.title, newState);
+        }
       });
 
       it('treats "show" like "notes"', function () {