Test Case xhtml1_wcag2_20050630_1.1_l1_sc1_004: Alternative text for images: alt attribute does not make sense

Formal Metadata

Formal Metadata
TitleAlternative text for images: alt attribute does not make sense
DescriptionA document with an img element that displays a cat. The image has as text alternative (in the alt attribute): “A black and white elephant named Harrison”.
CreatorBenToWeb (Christophe.Strobbe@…)
RightsCopyright BenToWeb 2004-2007
LanguageEnglish
Date2005-05-10
Statusaccepted QA

Technologies and Features

Technologies are markup languages or data formats. If the technology is a markup language, “features” refers to elements and attributes.

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)

Feature: img (namespace: http://www.w3.org/1999/xhtml) .

Technical specification: How to specify alternate text .

Test Data

Purpose

This a test case is intended to fail because the alt attribute of the img is incorrect.

Test Modes

Accessibility expert.

Test Files

Test file.

TCDL Data

xhtml1_wcag2_20050630_1.1_l1_sc1_004 (XML).

Rules

“Rules” refer to success criteria in WCAG 2.0, checkpoints in WCAG 1.0 and similar requirements.

Primary Rules

The test case fails the following success criterion at line 9, column 82: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#text-equiv-informative.

Functional Outcome

The image does not have a text description that conveys the same information: it says it shows an elephant instead of a cat.

Technical Comment

The img element has an alt attribute that is not relevant to the image ("elephant" instead of "cat").

Secondary Rules

Secondary Rule (WCAG 2.0 - February 2005 Editor's Draft)

The test case passes the following success criterion: http://www.w3.org/WAI/GL/WCAG20/WD-WCAG20-20050211/#4.1_use-spec-document-backward-compat-violations.

Functional Outcome

The image has a text description.

Technical Comment

The img element has an alt attribute with appropriate alternative text and therefore the img element is valid.