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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /testing/web-platform/tests/css/css-fonts/font-display/font-display-failure-fallback.html
parentInitial commit. (diff)
downloadfirefox-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-fonts/font-display/font-display-failure-fallback.html')
-rw-r--r--testing/web-platform/tests/css/css-fonts/font-display/font-display-failure-fallback.html37
1 files changed, 37 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-fonts/font-display/font-display-failure-fallback.html b/testing/web-platform/tests/css/css-fonts/font-display/font-display-failure-fallback.html
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index 0000000000..00b528298b
--- /dev/null
+++ b/testing/web-platform/tests/css/css-fonts/font-display/font-display-failure-fallback.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/css-fonts-4/#font-display-timeline">
+<script nonce="abc" src="/resources/testharness.js"></script>
+<script nonce="abc" src="/resources/testharnessreport.js"></script>
+<style>
+@font-face {
+ font-family: 'TestFace';
+ src: url('/fonts/Ahem.ttf?pipe=trickle(d0.5)'),
+ url('/fonts/Ahem.ttf?fallback-src');
+ font-display: optional;
+}
+
+@font-face {
+ font-family: 'FallbackFace';
+ src: url('/fonts/Ahem.ttf?fallback-face');
+}
+
+.test {
+ font-family: 'TestFace','FallbackFace';
+}
+</style>
+<div class="test">hello</div>
+<script>
+function numberOfDownloads(url) {
+ assert_true(!!window.PerformanceResourceTiming, "ResourceTiming not supported");
+ var absoluteURL = new URL(url, location.href).href;
+ return performance.getEntriesByName(absoluteURL).length;
+}
+
+promise_test(function() {
+ return document.fonts.ready.then(function() {
+ assert_equals(numberOfDownloads('/fonts/Ahem.ttf?pipe=trickle(d0.5)'), 1, 'first source should be loaded');
+ assert_equals(numberOfDownloads('/fonts/Ahem.ttf?fallback-src'), 0, 'fallback source should not be loaded');
+ assert_equals(numberOfDownloads('/fonts/Ahem.ttf?fallback-face'), 1, 'fallback font face should be loaded');
+ });
+}, "Fallback for font failure period");
+</script>