app/assets/javascripts/netzke/testing/helpers/actions.js.coffee in netzke-testing-0.12.1 vs app/assets/javascripts/netzke/testing/helpers/actions.js.coffee in netzke-testing-0.12.2

@@ -4,35 +4,64 @@
 
 Ext.Ajax.on 'requestcomplete', ->
   Netzke.ajaxCount -= 1
 
 Ext.apply window,
+  # Waits for all AJAX activity to stop, then calls the optional callback. If no callback was specified, returns a
+  # promise. The first argument can be a number of milliseconds to wait before starting to listen to the AJAX activity
+  # (handy when some Ext method implement a fixed delay before doing something, like triggering a column filter after it
+  # was set).
+  #
   # Examples:
   #
   #   wait ->
   #     afterAllAjaxActivityIsStopped()
   #
-  #   wait 2000, ->
-  #     afterTwoSeconds()
+  #   wait 200, ->
+  #     waitsAtLeast200MsBeforeCallingThis()
+  #
+  #   wait().then -> doSomething()
   wait: () ->
-    if typeof arguments[0] == 'function'
-      callback = arguments[0]
+    waitInCycle = (callback) ->
       i = 0
       id = setInterval ->
         i += 1
         if i >= 100
           clearInterval(id)
           callback.call()
 
         # this way we ensure another 20ms cycle before we issue a callback
         i = 100 if Netzke.ajaxCount == 0
       , 200
-    else
-      delay = arguments[0]
-      callback = arguments[1]
-      setInterval ->
-        callback.call()
-      , delay
+
+    # wait ->
+    #   callbackAsParameter()
+    if typeof arguments[0] == 'function'
+      return waitInCycle arguments[0]
+
+    if Ext.isNumber(arguments[0])
+
+      # wait 50, ->
+      #   waitAtLeast50Seconds()
+      if Ext.isFunction(arguments[1])
+        delay = arguments[0]
+        callback = arguments[1]
+        setInterval ->
+          waitInCycle(resolve)
+        , delay
+        return null
+
+      # wait(50).then ->
+      #   waitAtLeast50ThenResolve()
+      else
+        console.log("1", 1)
+        delay = arguments[0]
+        return new Promise (resolve, reject) ->
+          setInterval ->
+            waitInCycle(resolve)
+          , delay
+
+    return new Promise (resolve, reject) -> waitInCycle resolve
 
   click: (cmp) ->
     if Ext.isString(cmp)
       throw "Could not locate " + cmp
     else if (cmp.isXType) # is Ext component