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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-031.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-031.html')
| -rw-r--r-- | testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-031.html | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-031.html b/testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-031.html new file mode 100644 index 0000000000..d131c242bc --- /dev/null +++ b/testing/web-platform/tests/css/css-contain/content-visibility/content-visibility-031.html @@ -0,0 +1,72 @@ +<!doctype HTML> +<html> +<meta charset="utf8"> +<title>Content Visibility: resize observer interactions</title> +<link rel="author" title="Chris Harrelson" href="mailto:chrishtr@chromium.org"> +<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility"> +<meta name="assert" content="content-visibility hidden subtrees do not trigger resize observer"> + +<style> +.hidden { + content-visibility: hidden; +} +</style> +<div id="container"> + <div id="resize" style="width: 50px; height: 50px"> + </div> +</div> + +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> + +<script> +async_test(t => { + let didCallback = false; + + function runTest() { + let resizeCallback = function (entries) { + didCallback = true; + } + let resizeObserver = new ResizeObserver(resizeCallback); + + resizeObserver.observe(resize); + + requestAnimationFrame(t.step_func(step2)); + } + + function step2() { + assert_true(didCallback, 'Resize observation should happen in first frame after registering'); + didCallback = false; + + const container = document.getElementById("container"); + container.classList.add("hidden"); + + // Change the size of #resize. This should cause a resize observation, but + // only when the element becomes unhidden. + resize.style.width = '100px'; + + requestAnimationFrame(t.step_func(step3)); + } + + function step3() { + assert_false(didCallback, 'ResizeObsever should not run during while unrendered'); + requestAnimationFrame(t.step_func(step4)); + } + + function step4() { + assert_false(didCallback, 'ResizeObsever should not run while unrendered'); + const container = document.getElementById("container"); + container.classList.remove("hidden"); + requestAnimationFrame(t.step_func_done(step5)); + } + + function step5() { + assert_true(didCallback, 'ResizeObsevers should now run once becoming visible'); + } + + window.onload = function() { + requestAnimationFrame(() => requestAnimationFrame(t.step_func(runTest))); + }; +}, "ResizeObserver skipped while hidden"); +</script> +</html> |