Patch `window.it` to raise error on pending tests

cms/static/coffee/spec/helpers.coffee

@@ -7,3 +7,12 @@ jQuery.cookie = (key, value) =>
     @stubCookies[key] = value
   else
     @stubCookies[key]
+
+# Path Jasmine's `it` method to raise an error when the test is not defined.
+# This is helpful when writing the specs first before writing the test.
+@it = (desc, func) ->
+  if func?
+    jasmine.getEnv().it(desc, func)
+  else
+    jasmine.getEnv().it desc, ->
+      throw "test is undefined"