Sc1 4 2 Audio Control Audio

Description

This test checks that there isn’t an automatically started sound after the web page is loaded. If the sound plays automatically this test checks that the sound is no longer than 3 seconds or that there is at the top of the web page a mechanism to control the sound.

Background

G60: Playing a sound that turns off automatically within three seconds
G170: Providing a control near the beginning of the Web page that turns off sounds that play automatically
G171: Playing sounds only on user request
F23: Failure of 1.4.2 due to playing a sound longer than 3 seconds where there is no mechanism to turn it off
F93: Failure of Success Criterion 1.4.2 for absence of a way to pause or stop an HTML5 media element that autoplays

Assumptions

The test assumes that audio is rendered in the audio element. Therefore this test checks exclusive audio content in the audio element.
The test assumes that video is rendered in the video element. Therefore this test checks exclusive video content in the video element.
This test states that the links or buttons for the mechanism to control the sound is one of the first five links or buttons on the web page. This is more specific then the WCAG documentation.

Test properties

Property	Value
Test name	Audio control
Test requirement	SC 1.4.2
Test mode	Semi-automatic
Test environment	DOM
Test subject	Single web page
User profile	Requires hearing

Test procedure

Selector

Test mode: automatic

//*[self::audio or self::video]

Step 1

Test mode: automatic

Check if the audio or video is paused. Check paused property.

If true, return:

Outcome	Passed
Testcase	SC1-4-2-audio-control
ID	SC1-4-2-audio-control-pass1

Else continue with [step 2][#step-2]

Step 2

Test mode: automatic

Check if the sound is muted. Check muted property.

If true, return:

Outcome	Passed
Testcase	SC1-4-2-audio-control
ID	SC1-4-2-audio-control-pass2

Else continue with [step 3][#step-3]

Step 3

Test mode: automatic

Check that the sound is no longer than 3 seconds.

Check duration property is no longer than 3 seconds.

If true, continue with [step 4][#step-4]

Else continue with Step 5

Step 4

Test mode: automatic

Check if the sound has a loop. Check loop property.

If true, continue with Step 5

Else, return:

Outcome	Passed
Testcase	SC1-4-2-audio-control
ID	SC1-4-2-audio-control-pass3

Step 5

Test mode: automatic

Check if the video plays audio.

User Input Question:

Property	Value
Presented item	Web page with an automatically started sound.
Requires context	yes
Requires Interaction	no
Question	Is there audio playing on the web page?
Help	There should not be audio playing automatically on the web page loads.

If yes, continue with Step 6.

Else, return:

Outcome	Passed
Testcase	SC1-4-2-audio-control
ID	SC1-4-2-audio-control-pass4

Step 6

Test mode: automatic

Check if a mechanism to control the sound is provided as one of the first five links or buttons on the web page.

User Input Question:

Property	Value
Presented item	Web page with an automatically started sound.
Requires context	yes
Requires Interaction	yes
Question	Does the web page provide a mechanism to control the sound as one of the first five links or buttons?
Help	A mechanism to pause or stop the video or audio, or control the volume or mute the audio must be available on the web page. The mechanism must be located as one of the first five links or buttons of the web page. This way people (with screen readers) can turn off the sound before reading the web page. To inspect this, use the tab key to navigate through the web page.

If yes, return:

Outcome	Passed
Testcase	SC1-4-2-audio-control
ID	SC1-4-2-audio-control-pass5

Else, return:

Outcome	Failed
Testcase	SC1-4-2-audio-control
ID	SC1-4-2-audio-control-fail1
Error	No mechanism to control the automaticaly started sound available at the top of the web page.