Asqatasun v4 - Summary

Asqatasun v4 - RGAA 3.2016 - Rule 1.7.3

Summary

This test consists in detecting informative object images and thus defining the applicability of the test.

Human check will be then needed to determine whether the detected elements provide a detailed description.

Business description

Criterion

1.7

Test

1.7.3

Description

Chaque image objet (balise object avec l’attribut type="image/…") porteuse d’information, ayant une description détaillée, vérifie-t-elle une de ces conditions ?

Level

A

Technical description

Scope

Page

Decision level

Semi-Decidable

Algorithm

Selection

Set1

All the <object> tags with a "type" attribute that starts with "image/...", not within a link and not identified as captcha (see Notes about captcha detection) (css selector : object[type^=image]:not(a object))

Set2

All the elements of Set1 identified as informative image by marker usage (see Notes for details about detection through marker)

Set3

All the elements of Set1 identified neither as informative image, nor as decorative image by marker usage (see Notes for details about detection through marker)

Process

Test1

For each element of Set2, raise a MessageA.

Test2

For each element of Set3, raise a MessageB.

MessageA : Check detailed description of informative images
MessageB : Check nature of image and detailed description

Analysis

Not Applicable

The page has no object image (Set1 is empty)

Pre-Qualified

In all other cases

Notes

Markers

Informative images markers are set through the INFORMATIVE_IMAGE_MARKER parameter.

Decorative images markers are set through the DECORATIVE_IMAGE_MARKER parameter.

The value(s) passed as marker(s) will be checked against the following attributes:

Captcha detection

An element is identified as a CAPTCHA when the "captcha" occurrence is found :

TestCases

TestCases files for rule 1.7.3