Sc4 1 1 Idrefs
Description
This test checks that each element referred to from an idrefs attribute exists.
Background
- F17: Failure of Success Criterion 1.3.1 and 4.1.1 due to insufficient information in DOM to determine one-to-one relationships (e.g., between labels with same id) in HTML
- eGovMon test ID: F17-2
Assumptions
no known assumptions
Test properties
| Property | Value |
|---|---|
| Success Criterion | 4.1.1 Parsing |
| Test mode | Automatic |
| Test environment | DOM |
| Test subject | Single web page |
Test procedure
Selector
Test mode: automatic
Select each td and th element with a headers attribute, and each element with an aria IDREFS attribute. The following CSS selector can be used:
td[headers], th[headers], *[aria-controls], *[aria-describedby], *[aria-flowto], *[aria-labelledby], *[aria-owns]
Step 1
Test mode: automatic
- Make a list of idRefVals by splitting the IDREFS attribute on whitespace characters
- Trim each value in idRefVals by removing all whitespace characters
- FOR EACH idRefVal in idRefVals
- Get element IdTarget, by looking up the first element that has an ID attribute that matches idRefVal
- IF idTarget exists:
- Return SC4-1-1-idrefs-pass1
- ELSE:
- Return SC4-1-1-idrefs-fail1
| Outcome | Passed |
|---|---|
| Testcase | SC4-1-1-idrefs |
| Pointer | selector result |
| ID | SC4-1-1-idrefs-pass1 |
| Outcome | Failed |
|---|---|
| Testcase | SC4-1-1-idrefs |
| Error | The attribute {IDREFS attribute} refers to an element with the id {idRefVal} which does not exist on the page. |
| Pointer | selector result |
| ID | SC4-1-1-idrefs-fail1 |