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

Pour chaque lien image ayant un titre de lien (attribut title), le contenu de cet attribut est-il pertinent ?

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.