Bug 962645 - Support wait between press->release action chain. r=mdas

wait() before press() should not raise "MarionetteException: Element has
not been pressed."

testing/marionette/client/marionette/tests/unit/single_finger_functions.py

@@ -1,10 +1,15 @@
 from marionette import Actions
-def press_release(marionette, wait_for_condition, expected):
+def press_release(marionette, times, wait_for_condition, expected):
     testAction = marionette.absolute_url("testAction.html")
     marionette.navigate(testAction)
     action = Actions(marionette)
     button = marionette.find_element("id", "button1")
-    action.press(button).release().perform()
+    action.press(button).release()
+    # Insert wait between each press and release chain.
+    for _ in range(times-1):
+        action.wait(0.1)
+        action.press(button).release()
+    action.perform()
     wait_for_condition(lambda m: expected in m.execute_script("return document.getElementById('button1').innerHTML;"))
 
 def move_element(marionette, wait_for_condition, expected1, expected2):

testing/marionette/client/marionette/tests/unit/test_single_finger.py

@@ -19,7 +19,10 @@ from single_finger_functions import (
 
 class testSingleFinger(MarionetteTestCase):
     def test_press_release(self):
-        press_release(self.marionette, self.wait_for_condition, "button1-touchstart-touchend-mousemove-mousedown-mouseup-click")
+        press_release(self.marionette, 1, self.wait_for_condition, "button1-touchstart-touchend-mousemove-mousedown-mouseup-click")
+
+    def test_press_release_twice(self):
+        press_release(self.marionette, 2, self.wait_for_condition, "button1-touchstart-touchend-mousemove-mousedown-mouseup-click-touchstart-touchend-mousemove-mousedown-mouseup-click")
 
     def test_move_element(self):
         move_element(self.marionette, self.wait_for_condition, "button1-touchstart", "button2-touchmove-touchend")

testing/marionette/client/marionette/tests/unit/test_single_finger_desktop.py

@@ -59,7 +59,10 @@ prefs.setIntPref("ui.click_hold_context_menus.delay", arguments[0]);
         super(MarionetteTestCase, self).tearDown()
 
     def test_press_release(self):
-        press_release(self.marionette, self.wait_for_condition, "button1-mousemove-mousedown-mouseup-click")
+        press_release(self.marionette, 1, self.wait_for_condition, "button1-mousemove-mousedown-mouseup-click")
+
+    def test_press_release_twice(self):
+        press_release(self.marionette, 2, self.wait_for_condition, "button1-mousemove-mousedown-mouseup-click-mousemove-mousedown-mouseup-click")
 
     def test_move_element(self):
         move_element(self.marionette, self.wait_for_condition, "button1-mousemove-mousedown", "button2-mousemove-mouseup")

testing/marionette/marionette-listener.js

@@ -969,7 +969,7 @@ function actions(chain, touchId, command_id, i) {
   let el;
   let c;
   i++;
-  if (command != 'press') {
+  if (command != 'press' && command != 'wait') {
     //if mouseEventsOnly, then touchIds isn't used
     if (!(touchId in touchIds) && !mouseEventsOnly) {
       sendError("Element has not been pressed", 500, null, command_id);