RGAA 3.2016 - Rule 8.1.2

Summary

We check the doctype validity regarding the W3C recommandations (W3C Recommended list of Doctype declarations)

Business description

Criterion

8.1

Test

8.1.2

Description

Pour chaque page Web, le type de document (balise doctype) est-il valide ?

Level

A

Technical description

Scope

Page

Decision level

Decidable

Algorithm

Selection

Set1

The <!doctype> tag of the page

Process

Test1

We check the validity of the doctype of the page regarding the "RecommendedDoctypeDeclarations" and "RecommendedCaseInsensitiveDoctypeDeclarations" whitelists

MessageA : Wrong Doctype Declaration
  • code : WrongDoctypeDeclaration
  • status: Failed
  • parameter : none
  • present in source : no

Analysis

Not Applicable

The page has no doctype (Set1)

Failed

The doctype is not found among the doctype whitelist

Passed

The doctype is found among the doctype whitelist

Notes

HTML5 doctype is NOT case-sensitive: http://www.w3.org/TR/html5/syntax.html#the-doctype

HTML4: could not find formal statement about case-sensitiveness of doctype: http://www.w3.org/TR/html4/intro/sgmltut.html

XHTML1: same as HTML4 http://www.w3.org/TR/xhtml1/

From version 2.0, Asqatasun works on the generated html rendered by Firefox. We've noticed that for HTML 4.01 doctypes that define the doctype with the "HTML" key in Uppercase, the doctype is transformed and the "HTML" key is changed to lowercase. This behaviour is the same with chromium and opera. Regarding this fact, we decided to consider all the doctypes as case insensitive despite the W3c recommandations.

TestCases

TestCases files for rule 8.1.2