Test Case sc1.1.1_l1_006: Alt attribute for images: image with empty alt attribute in link with link text

Formal Metadata

Formal Metadata
TitleAlt attribute for images: image with empty alt attribute in link with link text
DescriptionA document containing a link with an image and text. The image itself does not contain text and has an empty alt attribute (the attribute is present, but there is no text or white space between the double quotation marks), but the link text describes the target of the link.
CreatorBenToWeb (Christophe.Strobbe@…)
RightsCopyright BenToWeb 2005-2007
LanguageEnglish
Date2005-08-22
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 test case is intended to fail because the text alternative immediately follows the image. (The accessibility of the target of the link is not part of this test case.)

Test Modes

Accessibility expert.

Test Files

Test file.

TCDL Data

sc1.1.1_l1_006 (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 10, column 123: http://www.w3.org/TR/2006/WD-WCAG20-20060427/guidelines.html#text-equiv-all.

The test case fails the following success criterion at line 10, column 133: http://www.w3.org/TR/2006/WD-WCAG20-20060427/guidelines.html#text-equiv-all.

Functional Outcome

The image has a text description in the link text. User testing provided the following results: users of screen readers and/or a Braille display (blind/low vision) had problems understanding what was in the image.

Technical Comment

The img element has an alt attribute.

Secondary Rules

Secondary Rule (WCAG 2.0 - June 2005 Working Draft)

The test case passes (line 10, column 123) the following success criterion: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#text-equiv-informative.

The test case passes (line 10, column 133) the following success criterion: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#text-equiv-informative.

Functional Outcome

The image has a text description in the link text.

Technical Comment

The img element has an alt attribute.

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.