BLD-970: Fix flaky test.

lms/djangoapps/courseware/features/video.feature

@@ -2,44 +2,44 @@
 Feature: LMS Video component
   As a student, I want to view course videos in LMS
 
-  # BLD-970 Failing currently in master
   # 1
-#  Scenario: Video component stores position correctly when page is reloaded
-#    Given the course has a Video component in "Youtube" mode
-#    When the video has rendered in "Youtube" mode
-#    And I click video button "play"
-#    Then I seek video to "10" seconds
-#    And I click video button "pause"
-#    And I reload the page
-#    And I click video button "play"
-#    Then I see video starts playing from "0:10" position
+  Scenario: Video component stores position correctly when page is reloaded
+    Given the course has a Video component in "Youtube" mode
+    When the video has rendered in "Youtube" mode
+    And I click video button "play"
+    And I click video button "pause"
+    Then I seek video to "10" seconds
+    And I click video button "play"
+    And I click video button "pause"
+    And I reload the page with video
+    Then I see video slider at "10" seconds
 
-  # 1
+  # 2
   Scenario: Video component is fully rendered in the LMS in HTML5 mode
     Given the course has a Video component in "HTML5" mode
     When the video has rendered in "HTML5" mode
     And all sources are correct
 
-  # 2
+  # 3
   @skip_firefox
   Scenario: Autoplay is disabled in LMS for a Video component
     Given the course has a Video component in "HTML5" mode
     Then when I view the video it does not have autoplay enabled
 
-  # 3
+  # 4
   # Youtube testing
   Scenario: Video component is fully rendered in the LMS in Youtube mode with HTML5 sources
     Given youtube server is up and response time is 0.4 seconds
     And the course has a Video component in "Youtube_HTML5" mode
     When the video has rendered in "Youtube" mode
 
-  # 4
+  # 5
   Scenario: Video component is not rendered in the LMS in Youtube mode with HTML5 sources
     Given youtube server is up and response time is 2 seconds
     And the course has a Video component in "Youtube_HTML5" mode
     When the video has rendered in "HTML5" mode
 
-  # 5
+  # 6
   Scenario: Video component is not rendered in the LMS in Youtube mode with HTML5 sources when YouTube API is blocked
     Given youtube server is up and response time is 2 seconds
     And youtube stub server blocks YouTube API
@@ -47,25 +47,25 @@ Feature: LMS Video component
     And I wait "3" seconds
     Then the video has rendered in "HTML5" mode
 
-  # 6
+  # 7
   Scenario: Video component is rendered in the LMS in Youtube mode without HTML5 sources
     Given youtube server is up and response time is 2 seconds
     And the course has a Video component in "Youtube" mode
     When the video has rendered in "Youtube" mode
 
-  # 7
+  # 8
   Scenario: Video component is rendered in the LMS in Youtube mode with HTML5 sources that doesn't supported by browser
     Given youtube server is up and response time is 2 seconds
     And the course has a Video component in "Youtube_HTML5_Unsupported_Video" mode
     When the video has rendered in "Youtube" mode
 
-  # 8
+  # 9
   Scenario: Video component is rendered in the LMS in HTML5 mode with HTML5 sources that doesn't supported by browser
     Given the course has a Video component in "HTML5_Unsupported_Video" mode
     Then error message is shown
     And error message has correct text
 
-  # 9
+  # 10
   Scenario: Multiple videos in sequentials all load and work, switching between sequentials
     Given I am registered for the course "test_course"
     And it has a video "A" in "Youtube" mode in position "1" of sequential
@@ -87,7 +87,7 @@ Feature: LMS Video component
     When I open video "A"
     Then video "A" should start playing at speed "2.0"
 
-  # 10
+  # 11
   Scenario: Video component stores speed correctly when each video is in separate sequence
     Given I am registered for the course "test_course"
     And it has a video "A" in "Youtube" mode in position "1" of sequential
@@ -100,7 +100,7 @@ Feature: LMS Video component
     Then video "C" should start playing at speed "0.75"
     When I open video "A"
     Then video "A" should start playing at speed "2.0"
-    And I reload the page
+    And I reload the page with video
     When I open video "A"
     Then video "A" should start playing at speed "2.0"
     And I select the "1.0" speed on video "A"
@@ -109,7 +109,7 @@ Feature: LMS Video component
     When I open video "C"
     Then video "C" should start playing at speed "1.0"
 
-  # 11
+  # 12
    Scenario: Language menu works correctly in Video component
     Given I am registered for the course "test_course"
     And I have a "chinese_transcripts.srt" transcript file in assets
@@ -124,7 +124,7 @@ Feature: LMS Video component
     And I select language with code "en"
     And I see "Hi, welcome to Edx." text in the captions
 
-  # 12
+  # 13
   Scenario: CC button works correctly w/o english transcript in HTML5 mode of Video component
     Given I am registered for the course "test_course"
     And I have a "chinese_transcripts.srt" transcript file in assets
@@ -134,7 +134,7 @@ Feature: LMS Video component
     And I make sure captions are opened
     Then I see "好 各位同学" text in the captions
 
-  # 13
+  # 14
   Scenario: CC button works correctly only w/ english transcript in HTML5 mode of Video component
     Given I am registered for the course "test_course"
     And I have a "subs_OEoXaMPEzfM.srt.sjson" transcript file in assets
@@ -144,7 +144,7 @@ Feature: LMS Video component
     And I make sure captions are opened
     Then I see "Hi, welcome to Edx." text in the captions
 
-  # 14
+  # 15
   Scenario: CC button works correctly w/o english transcript in Youtube mode of Video component
     Given I am registered for the course "test_course"
     And I have a "chinese_transcripts.srt" transcript file in assets
@@ -154,7 +154,7 @@ Feature: LMS Video component
     And I make sure captions are opened
     Then I see "好 各位同学" text in the captions
 
-  # 15
+  # 16
   Scenario: CC button works correctly if transcripts and sub fields are empty, but transcript file exists in assets (Youtube mode of Video component)
     Given I am registered for the course "test_course"
     And I have a "subs_OEoXaMPEzfM.srt.sjson" transcript file in assets
@@ -162,12 +162,12 @@ Feature: LMS Video component
     And I make sure captions are opened
     Then I see "Hi, welcome to Edx." text in the captions
 
-  # 16
+  # 17
   Scenario: CC button is hidden if no translations
     Given the course has a Video component in "Youtube" mode
     Then button "CC" is hidden
 
-  # 17
+  # 18
   Scenario: Video is aligned correctly if transcript is visible in fullscreen mode
     Given I am registered for the course "test_course"
     And I have a "subs_OEoXaMPEzfM.srt.sjson" transcript file in assets
@@ -178,13 +178,13 @@ Feature: LMS Video component
     And I click video button "fullscreen"
     Then I see video aligned correctly with enabled transcript
 
-  # 18
+  # 19
   Scenario: Video is aligned correctly if transcript is hidden in fullscreen mode
     Given the course has a Video component in "Youtube" mode
     And I click video button "fullscreen"
     Then I see video aligned correctly without enabled transcript
 
-  # 19
+  # 20
   Scenario: Video is aligned correctly on transcript toggle in fullscreen mode
     Given I am registered for the course "test_course"
     And I have a "subs_OEoXaMPEzfM.srt.sjson" transcript file in assets
@@ -197,7 +197,7 @@ Feature: LMS Video component
     And I click video button "CC"
     Then I see video aligned correctly without enabled transcript
 
-  # 20
+  # 21
   Scenario: Download Transcript button works correctly in Video component
     Given I am registered for the course "test_course"
     And I have a "subs_OEoXaMPEzfM.srt.sjson" transcript file in assets
@@ -219,7 +219,7 @@ Feature: LMS Video component
     When I open video "C"
     Then menu "download_transcript" doesn't exist
 
-  # 21
+  # 22
   Scenario: Youtube video has correct transcript if fields for other speeds are filled.
     Given I am registered for the course "test_course"
     And I have a "subs_OEoXaMPEzfM.srt.sjson" transcript file in assets
@@ -230,11 +230,11 @@ Feature: LMS Video component
     And I make sure captions are opened
     Then I see "Hi, welcome to Edx." text in the captions
     And I select the "1.50" speed
-    And I reload the page
+    And I reload the page with video
     Then I see "Hi, welcome to Edx." text in the captions
     And I see duration "1:00"
 
-  # 22
+  # 23
    Scenario: Download button works correctly for non-english transcript in Youtube mode of Video component
     Given I am registered for the course "test_course"
     And I have a "chinese_transcripts.srt" transcript file in assets
@@ -248,7 +248,7 @@ Feature: LMS Video component
     And I see "好 各位同学" text in the captions
     Then I can download transcript in "srt" format that has text "好 各位同学"
 
-  # 23
+  # 24
    Scenario: Download button works correctly for non-english transcript in HTML5 mode of Video component
     Given I am registered for the course "test_course"
     And I have a "chinese_transcripts.srt" transcript file in assets
@@ -262,7 +262,7 @@ Feature: LMS Video component
     And I see "好 各位同学" text in the captions
     Then I can download transcript in "srt" format that has text "好 各位同学"
 
-  # 24
+  # 25
   Scenario: Download button works correctly w/o english transcript in HTML5 mode of Video component
     Given I am registered for the course "test_course"
     And I have a "chinese_transcripts.srt" transcript file in assets
@@ -272,7 +272,7 @@ Feature: LMS Video component
     And I see "好 各位同学" text in the captions
     Then I can download transcript in "srt" format that has text "好 各位同学"
 
-  # 25
+  # 26
   Scenario: Download button works correctly w/o english transcript in Youtube mode of Video component
     Given I am registered for the course "test_course"
     And I have a "chinese_transcripts.srt" transcript file in assets
@@ -282,7 +282,7 @@ Feature: LMS Video component
     And I see "好 各位同学" text in the captions
     Then I can download transcript in "srt" format that has text "好 各位同学"
 
-  # 26
+  # 27
   Scenario: Verify that each video in each sub-section includes a transcript for non-Youtube countries.
     Given youtube server is up and response time is 2 seconds
     And I am registered for the course "test_course"

lms/djangoapps/courseware/features/video.py

@@ -6,7 +6,7 @@ import json
 import os
 import time
 import requests
-from nose.tools import assert_less
+from nose.tools import assert_less, assert_equal
 from common import i_am_registered_for_the_course, visit_scenario_item
 from django.utils.translation import ugettext as _
 from django.conf import settings
@@ -183,9 +183,6 @@ def add_video_to_course(course, parent_location=None, player_mode=None, data=Non
         parent_location = add_vertical_to_course(course)
     kwargs = get_metadata(parent_location, player_mode, data, display_name=display_name)
     world.scenario_dict['VIDEO'] = world.ItemFactory.create(**kwargs)
-    world.wait_for_present('.is-initialized')
-    world.wait_for_invisible('.video-wrapper .spinner')
-    world.wait_for_ajax_complete()
 
 
 def add_vertical_to_course(course_num):
@@ -223,6 +220,7 @@ def navigate_to_an_item_in_a_sequence(number):
 def change_video_speed(speed):
     world.browser.execute_script("$('.speeds').addClass('open')")
     speed_css = 'li[data-speed="{0}"] a'.format(speed)
+    world.wait_for_visible('.speeds')
     world.css_click(speed_css)
 
 
@@ -302,6 +300,19 @@ def find_caption_line_by_data_index(index):
     return world.css_find(SELECTOR).first
 
 
+def wait_for_video():
+    world.wait_for_present('.is-initialized')
+    world.wait_for_present('div.vidtime')
+    world.wait_for_invisible('.video-wrapper .spinner')
+    world.wait_for_ajax_complete()
+
+
+@step("I reload the page with video$")
+def reload_the_page_with_video(_step):
+    _step.given('I reload the page')
+    wait_for_video()
+
+
 @step('youtube stub server (.*) YouTube API')
 def configure_youtube_api(_step, action):
     action=action.strip()
@@ -326,6 +337,7 @@ def view_video(_step, player_mode):
     data = _step.hashes[0] if _step.hashes else None
     add_video_to_course(coursenum, player_mode=player_mode.lower(), data=data)
     visit_scenario_item('SECTION')
+    wait_for_video()
 
 
 @step('a video in "([^"]*)" mode(?:\:)?$')
@@ -333,6 +345,7 @@ def add_video(_step, player_mode):
     data = _step.hashes[0] if _step.hashes else None
     add_video_to_course(coursenum, player_mode=player_mode.lower(), data=data)
     visit_scenario_item('SECTION')
+    wait_for_video()
 
 
 @step('video(?:s)? "([^"]*)" in "([^"]*)" mode in position "([^"]*)" of sequential(?:\:)?$')
@@ -345,6 +358,7 @@ def add_video_in_position(_step, video_ids, player_mode, position):
 @step('I open the section with videos$')
 def visit_video_section(_step):
     visit_scenario_item('SECTION')
+    wait_for_video()
 
 
 @step('I select the "([^"]*)" speed$')
@@ -493,15 +507,19 @@ def select_language(_step, code):
 @step('I click video button "([^"]*)"$')
 def click_button(_step, button):
     world.css_click(VIDEO_BUTTONS[button])
+    world.wait_for_ajax_complete()
 
 
-@step('I see video starts playing from "([^"]*)" position$')
+@step('I see video slider at "([^"]*)" seconds$')
 def start_playing_video_from_n_seconds(_step, position):
     world.wait_for(
-        func=lambda _: world.css_html('.vidtime')[:4] == position.strip(),
-        timeout=5
+        func=lambda _: elapsed_time() > 0,
+        timeout=30
     )
 
+    actual_position = elapsed_time()
+    assert_equal(actual_position, int(position), "Current position is {}, but should be {}".format(actual_position, position))
+
 
 @step('I see duration "([^"]*)"$')
 def i_see_duration(_step, position):
@@ -518,6 +536,7 @@ def seek_video_to_n_seconds(_step, seconds):
     time = float(seconds.strip())
     jsCode = "$('.video').data('video-player-state').videoPlayer.onSlideSeek({{time: {0:f}}})".format(time)
     world.browser.execute_script(jsCode)
+    _step.given('I see video slider at "{}" seconds'.format(seconds))
 
 
 @step('I have a "([^"]*)" transcript file in assets$')