1895655 - Add test for configurable pagedown/pageup behavior from bug 1783183

Status: RESOLVED FIXED

(Core :: Layout: Scrolling and Overflow, task, P3)

Description

[Daniel Holbert [:dholbert]]

I've got a mochitest that I wrote for bug 1783183 while reviewing it. I'm spinning off this bug to get the mochitest reviewed and landed. (Its behavior confirms to me locally that the prefs work as-expected in the various edge cases that I was interested in, so I don't want to hold up landing bug 1783183 at this point, and we can land the mochitest shortly after.)

Comment 1

[Daniel Holbert [:dholbert]]

Try run with current draft of test (which passes locally):
https://treeherder.mozilla.org/jobs?repo=try&revision=040ed75abba70aa555e7eb941e8126900385a636

Comment 2

[Daniel Holbert [:dholbert]]

Attachment: Bug 1895655: Add mochitest for about:config prefs that configure the amount of overlap when scrolling by pages. r?#layout

Comment 3

[Daniel Holbert [:dholbert]]

The previous try run revealed that Android consistently has 1px more overlap than what we expect (and what we see on other platforms). Not sure if that's an intentional/enforced thing vs. just a rounding difference; but it seems to be consistent, so I just updated the test to account for it (and added some additional documentation and subtests).

Here's an updated try run with the patch that I just submitted for review:
https://treeherder.mozilla.org/jobs?repo=try&revision=9ae6053373852f395352b7c7e38d5389b8fb1e7f

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/5a079cfea46c
Add mochitest for about:config prefs that configure the amount of overlap when scrolling by pages. r=layout-reviewers,hiro

Comment 5

[Atila Butkovits]

https://hg.mozilla.org/mozilla-central/rev/5a079cfea46c