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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:44:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:44:51 +0000 |
| commit | 9e3c08db40b8916968b9f30096c7be3f00ce9647 (patch) | |
| tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /layout/base/tests/browser_bug1757410.js | |
| parent | Initial commit. (diff) | |
| download | thunderbird-9e3c08db40b8916968b9f30096c7be3f00ce9647.tar.xz thunderbird-9e3c08db40b8916968b9f30096c7be3f00ce9647.zip | |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/base/tests/browser_bug1757410.js')
| -rw-r--r-- | layout/base/tests/browser_bug1757410.js | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/layout/base/tests/browser_bug1757410.js b/layout/base/tests/browser_bug1757410.js new file mode 100644 index 0000000000..59c740e5a8 --- /dev/null +++ b/layout/base/tests/browser_bug1757410.js @@ -0,0 +1,62 @@ +/* Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +const PAGECONTENT = + "<!DOCTYPE html>" + + "<html>" + + "<style>" + + "html { " + + " height: 120vh;" + + " overflow-y: scroll;" + + "}" + + "</style>" + + "</html>"; + +const pageUrl = "data:text/html," + encodeURIComponent(PAGECONTENT); + +add_task(async function test() { + if (window.devicePixelRatio == 1) { + ok( + true, + "Skip this test since this test is supposed to run on HiDPI mode, " + + "the devixePixelRato on this machine is " + + window.devicePixelRatio + ); + return; + } + + const tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, pageUrl); + + // Scroll the content a bit. + const originalScrollPosition = await SpecialPowers.spawn( + tab.linkedBrowser, + [], + async () => { + content.document.scrollingElement.scrollTop = 100; + return content.document.scrollingElement.scrollTop; + } + ); + + // Disabling HiDPI mode and check the scroll position. + SpecialPowers.DOMWindowUtils.setHiDPIMode(false); + // Make sure we restore even if this test failed. + registerCleanupFunction(() => { + SpecialPowers.DOMWindowUtils.restoreHiDPIMode(); + }); + + const scrollPosition = await SpecialPowers.spawn( + tab.linkedBrowser, + [], + async () => { + return content.document.scrollingElement.scrollTop; + } + ); + is( + originalScrollPosition, + scrollPosition, + "The scroll position should be kept" + ); + BrowserTestUtils.removeTab(tab); +}); |