Updated acceptance tests.

cms/djangoapps/contentstore/features/video.feature

@@ -45,16 +45,26 @@ Feature: CMS.Video Component
   Scenario: Closed captions become visible when the mouse hovers over CC button
     Given I have created a Video component with subtitles
     And Make sure captions are closed
-    Then Captions become invisible
+    Then Captions become invisible after 3 seconds
     And Hover over CC button
-    Then Captions become visible
+    Then Captions become visible after 0 seconds
+    And Hover over volume button
+    Then Captions become invisible after 3 seconds
 
   # 8
   Scenario: Open captions never become invisible
     Given I have created a Video component with subtitles
     And Make sure captions are open
-    Then Captions become visible
+    Then Captions are visible after 0 seconds
     And Hover over CC button
-    Then Captions become visible
+    Then Captions are visible after 3 seconds
+    And Hover over volume button
+    Then Captions are visible after 3 seconds
+
+  # 9
+  Scenario: Closed captions are invisible when mouse doesn't hover on CC button
+    Given I have created a Video component with subtitles
+    And Make sure captions are closed
+    Then Captions become invisible after 3 seconds
     And Hover over volume button
-    Then Captions become visible
+    Then Captions are invisible after 0 seconds

cms/djangoapps/contentstore/features/video.py

@@ -127,13 +127,21 @@ def hover_over_button(_step, button):
         world.browser.find_by_css('.volume').mouse_over()
 
 
-@step('Captions become (.+)$')
-def captions_become_visible(_step, visibility_state):
-    # Captions become invisible by fading out. We must wait.
-    world.wait(2)
+@step('Captions become (.+) after (.+) seconds$')
+def check_captions_visibility_state(_step, visibility_state, timeout):
+    timeout = int(timeout.strip())
+
+    # Captions become invisible by fading out. We must wait by a specified
+    # time.
+    world.wait(timeout)
 
     if visibility_state == 'visible':
         assert world.css_visible('.subtitles')
     else:
         assert not world.css_visible('.subtitles')
 
+
+@step('Captions are (.+) after (.+) seconds$')
+def check_captions_visibility_state2(_step, visibility_state, timeout):
+    check_captions_visibility_state(_step, visibility_state, timeout)
+