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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/css/mediaqueries/mq-dynamic-empty-children.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/mediaqueries/mq-dynamic-empty-children.html')
| -rw-r--r-- | testing/web-platform/tests/css/mediaqueries/mq-dynamic-empty-children.html | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/mediaqueries/mq-dynamic-empty-children.html b/testing/web-platform/tests/css/mediaqueries/mq-dynamic-empty-children.html new file mode 100644 index 0000000000..3edda870ef --- /dev/null +++ b/testing/web-platform/tests/css/mediaqueries/mq-dynamic-empty-children.html @@ -0,0 +1,40 @@ +<!doctype html> +<title>Dynamic evaluation of media queries works fine in presence of empty media rule</title> +<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez"> +<link rel="author" href="https://mozilla.org" title="Mozilla"> +<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1669600"> +<link rel="help" href="https://drafts.csswg.org/mediaqueries-4/"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<iframe width=500 height=300 frameborder=0></iframe> +<script> +let iframe = document.querySelector("iframe"); +promise_test(async function (t) { + await new Promise(resolve => { + window.addEventListener("load", resolve); + }); + let frameLoaded = new Promise(resolve => { + iframe.addEventListener("load", resolve); + }); + iframe.srcdoc = ` + <style> + :root { background-color: red; } + /* This one should never apply */ + @media (min-width: 1500px) {} + /* This one should change and start matching */ + @media (max-width: 400px) { + :root { background-color: lime; } + } + </style> + `; + await frameLoaded; + + function getColor() { + return iframe.contentWindow.getComputedStyle(iframe.contentDocument.documentElement).backgroundColor; + } + + assert_equals(getColor(), "rgb(255, 0, 0)", "Should start red"); + iframe.width = 400; + assert_equals(getColor(), "rgb(0, 255, 0)", "Should turn green"); +}); +</script> |