1463993 - Add rendering test for scrollbar color properties

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, enhancement)

Description

[Xidorn Quan [:xidorn] UTC+10]

It is probably hard to test exactly how scrollbars are rendered given they are done in a native way, but we can probably build some tools to check that the colors are used via analyzing the screenshot of the page. Maybe we can simply count the number of pixels which have given colors.

There are several tests in my mind that we should add:
* test it works on scrollbars of a div
* test it works on viewport scrollbars
* test resetting them to auto works as expected

Comment 1

[Emilio Cobos Álvarez (:emilio)]

We can probably add <link rel="mismatch"> wpt .tentative.html tests too, that'd be extra-nice :)

Comment 2

[Xidorn Quan [:xidorn] UTC+10]

Attachment: Bug 1463993 - Add a rendering test for scrollbar color properties.

Review commit: https://reviewboard.mozilla.org/r/247482/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/247482/

Comment 3

[Cameron McCormack (:heycam)]

Comment on attachment 8981341 [details]
Bug 1463993 - Add a rendering test for scrollbar color properties.

https://reviewboard.mozilla.org/r/247482/#review253932

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/8b72e1dcd917
Add a rendering test for scrollbar color properties. r=heycam

Comment 5

[Arthur Iakab [arthur_iakab]]

https://hg.mozilla.org/mozilla-central/rev/8b72e1dcd917