RGAA 3.0 - Rule 6.2.2

Summary

This test consists in checking whether the title of each image link is relevant.

Business description

Criterion

6.2

Test

6.2.2

Description

For each image link with a link title (title attribute), is the content of this attribute relevant?

Level

A

Technical description

Scope

Page

Decision level

Semi-Decidable

Algorithm

Selection

Set1

All the <a> tags with a "href" attribute, with children (a[href]:has(*) )

Set2

All the elements of Set1 without own text and with only one child of type <img>, <canvas> or <object> (img , object[type^=image], object[data^=data:image], object[data$=png], object[data$=jpeg], object[data$=jpg],object[data$=bmp], object[data$=gif], canvas) (assuming the definition of an image link in Rgaa 3.0)

Set3

All the elements of Set2 with a not empty text and a "title" attribute

Process

Test1

For each element of Set3, we check whether the "title" attribute is not empty

For each element returning false in Test1, raise a MessageA

Test2

For each element of Set3, we check whether the "title" attribute doesn't only contain non alphanumerical characters.

For each element returning false in Test2, raise a MessageB

Test3

For each element of Set3, we check whether the "title" attribute value doesn't belong to the text link blacklist.

For each element returning false in Test3, raise a MessageB

Test4

For each element of Set2, we check whether the "title" attribute is not strictly identical to the link text.

For each element returning false in Test4, raise a MessageC

Test5

For each element of Set3, we check whether the "title" attribute contains the link text and more.

For each element returning true in Test5, raise a MessageC

For each element returning false in Test5, raise a MessageD

  • code : EmptyLinkTitle
  • status: Failed
  • parameter : link text, "title" attribute, snippet
  • present in source : yes
  • code : NotPertinentLinkTitle
  • status: Failed
  • parameter : link text, "title" attribute, snippet
  • present in source : yes
  • code : SuspectedPertinentLinkTitle
  • status: Pre-Qualified
  • parameter : link text, "title" attribute, snippet
  • present in source : yes
  • code : SuspectedNotPertinentTitleAttribute
  • status: Pre-Qualified
  • parameter : link text, "title" attribute, snippet
  • present in source : yes

Analysis

Not Applicable

The page has no image link with a "title" attribute (Set3 is empty)

Failed

  • At least one image link has an empty title attribute (Test1 returns false for at least one element)
  • At least one image link has title attribute only composed of non alphanumerical characters (Test2 returns false for at least one element)
  • At least one image link has a title attribute which is blacklisted (Test3 returns false for at least one element)

Pre-qualified

In all other cases

Notes

  1. We assume here that the textual alternative of the image corresponds to the link text.

  2. Definition of not-pertinent link title attribute :

A link "title" attribute is regarded as not-pertinent in the following cases :

  • the "title" attribute is empty
  • the "title" attribute is blacklisted (regarding the LinkTextBlacklist nomenclature)
  • the "title" attribute only contains not alphanumerics characters

  • Due to the "Note 1" of the definition of a link title, a "title" attribute identical to the text link is seen as suspected passed.

TestCases

TestCases files for rule 6.2.2