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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /layout/style/test/test_reframe_cb.html | |
| parent | Initial commit. (diff) | |
| download | firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/style/test/test_reframe_cb.html')
| -rw-r--r-- | layout/style/test/test_reframe_cb.html | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/layout/style/test/test_reframe_cb.html b/layout/style/test/test_reframe_cb.html new file mode 100644 index 0000000000..549d04c5c0 --- /dev/null +++ b/layout/style/test/test_reframe_cb.html @@ -0,0 +1,56 @@ +<!doctype html> +<meta charset="utf-8"> +<title> + Test for bug 1519371: We don't reframe for changes that affect our containing + block status unless whether we're a containing block really changed. +</title> +<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez"> +<script src="/tests/SimpleTest/SimpleTest.js"></script> +<div id="content"></div> +<script> +SimpleTest.waitForExplicitFinish(); +const utils = SpecialPowers.getDOMWindowUtils(window); + +function expectReframe(shouldHaveReframed, callback) { + document.documentElement.offsetTop; + const previousConstructCount = utils.framesConstructed; + const previousRestyleGeneration = utils.restyleGeneration; + + callback(); + + document.documentElement.offsetTop; + isnot(previousRestyleGeneration, utils.restyleGeneration, + "We should have restyled"); + (shouldHaveReframed ? isnot : is)(previousConstructCount, + utils.framesConstructed, + `We should ${shouldHaveReframed ? "" : "not"} have reframed`); +} + +const content = document.getElementById("content"); + +// Without fixed-pos descendants, we should not reframe. +expectReframe(false, () => { + content.style.transform = "scale(1)"; +}); + +content.style.transform = ""; +content.innerHTML = `<div style="position: fixed"></div>`; + +// With fixed-pos descendants, got to reframe. +expectReframe(true, () => { + content.style.transform = "scale(1)"; +}); + +// If our containing-block-ness didn't change, we should not need to reframe. +expectReframe(false, () => { + content.style.willChange = "transform"; +}); + +// If it does change, we need to reframe. +expectReframe(true, () => { + content.style.willChange = ""; + content.style.transform = ""; +}); + +SimpleTest.finish(); +</script> |