diff -r 000000000000 -r 6474c204b198 browser/devtools/responsivedesign/test/browser_responsive_cmd.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/responsivedesign/test/browser_responsive_cmd.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,107 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function test() {
+  function isOpen() {
+    return !!gBrowser.selectedTab.__responsiveUI;
+  }
+
+  helpers.addTabWithToolbar("about:blank", function(options) {
+    return helpers.audit(options, [
+      {
+        setup: "resize toggle",
+        check: {
+          input:  'resize toggle',
+          hints:               '',
+          markup: 'VVVVVVVVVVVVV',
+          status: 'VALID'
+        },
+        exec: {
+          output: ""
+        },
+        post: function() {
+          ok(isOpen(), "responsive mode is open");
+        },
+      },
+      {
+        setup: "resize toggle",
+        check: {
+          input:  'resize toggle',
+          hints:               '',
+          markup: 'VVVVVVVVVVVVV',
+          status: 'VALID'
+        },
+        exec: {
+          output: ""
+        },
+        post: function() {
+          ok(!isOpen(), "responsive mode is closed");
+        },
+      },
+      {
+        setup: "resize on",
+        check: {
+          input:  'resize on',
+          hints:           '',
+          markup: 'VVVVVVVVV',
+          status: 'VALID'
+        },
+        exec: {
+          output: ""
+        },
+        post: function() {
+          ok(isOpen(), "responsive mode is open");
+        },
+      },
+      {
+        setup: "resize off",
+        check: {
+          input:  'resize off',
+          hints:            '',
+          markup: 'VVVVVVVVVV',
+          status: 'VALID'
+        },
+        exec: {
+          output: ""
+        },
+        post: function() {
+          ok(!isOpen(), "responsive mode is closed");
+        },
+      },
+      {
+        setup: "resize to 400 400",
+        check: {
+          input:  'resize to 400 400',
+          hints:                   '',
+          markup: 'VVVVVVVVVVVVVVVVV',
+          status: 'VALID',
+          args: {
+            width: { value: 400 },
+            height: { value: 400 },
+          }
+        },
+        exec: {
+          output: ""
+        },
+        post: function() {
+          ok(isOpen(), "responsive mode is open");
+        },
+      },
+      {
+        setup: "resize off",
+        check: {
+          input:  'resize off',
+          hints:            '',
+          markup: 'VVVVVVVVVV',
+          status: 'VALID'
+        },
+        exec: {
+          output: ""
+        },
+        post: function() {
+          ok(!isOpen(), "responsive mode is closed");
+        },
+      },
+    ]);
+  }).then(finish);
+}