Proposed tests for the HTML Image Description Extension specification. These tests are © chaals, and available under the W3C Software license
These 15 tests include descriptions under different combinations of circumstances - images included "normally", as data: URIs, or missing, with the descriptions internal or external to the page, as a data: URI, or in a location only reachable by taking into account the base element.
The same tests are used to provide 3 results: 1 Can the user discover there is an image that has a long description available? 2 Can the user access the description? To pass, the user should arrive at the "pass page" which has a heading "Pass" followed by a description, or the focus must be on the text "Pass, if the focus is here" which is followed by a description of the image. 3 Is the long description available to system accessibility APIs
Invalid long description (plain text) contains an invalid long description (plain text) and can be used to test User Agent and validation tool handling. NOTE: Handling of invalid longdescs by user agents is currently undefined. Invalid long description (empty attribute) contains an invalid long description (plain text) and can be used to test User Agent and validation tool handling. NOTE: Handling of invalid longdescs by user agents is currently undefined. Pointer to an invalid long description (not contained in a well-formed fragment) points to a long description in a page fragment whose target is an empty element. Validation tools should at least generate a warning, since an empty element is almost certainly not an adequate description, and is likely instead to reflect not passing the relevant authoring requirement.
Preliminary test results are available for some platforms. More results are welcome.
The following files are required to make one or more of the tests work: