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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/mediaqueries/prefers-contrast.html
parentInitial commit. (diff)
downloadfirefox-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 'testing/web-platform/tests/css/mediaqueries/prefers-contrast.html')
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diff --git a/testing/web-platform/tests/css/mediaqueries/prefers-contrast.html b/testing/web-platform/tests/css/mediaqueries/prefers-contrast.html
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+++ b/testing/web-platform/tests/css/mediaqueries/prefers-contrast.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<link rel="help" href="https://drafts.csswg.org/mediaqueries-5/#prefers-contrast" />
+<script type="text/javascript" src="/resources/testharness.js"></script>
+<script type="text/javascript" src="/resources/testharnessreport.js"></script>
+
+<script type="text/javascript" src="resources/matchmedia-utils.js"></script>
+<script>
+query_should_be_known("(prefers-contrast)");
+query_should_be_known("(prefers-contrast: no-preference)");
+query_should_be_known("(prefers-contrast: more)");
+query_should_be_known("(prefers-contrast: less)");
+query_should_be_known("(prefers-contrast: custom)");
+
+query_should_be_unknown("(prefers-contrast: increase)");
+query_should_be_unknown("(prefers-contrast: none)");
+query_should_be_unknown("(prefers-contrast: forced high)");
+query_should_be_unknown("(prefers-contrast: forced low)");
+query_should_be_unknown("(prefers-contrast > increase)");
+query_should_be_unknown("(prefers-increased-contrast)");
+query_should_be_unknown("(prefers-decreased-contrast)");
+query_should_be_unknown("(prefers-contrast: high)");
+query_should_be_unknown("(prefers-contrast: low)");
+query_should_be_unknown("(prefers-contrast: forced)");
+
+test(() => {
+ // no-preference is the default and all other values evaluate to
+ // true in the boolean context. If no-preference matches, then
+ // boolean context should be false. If no-preference does not match
+ // then boolean context should be true. Therefore, these two values
+ // should always be each others inverse irrespective of OS level
+ // settings.
+ let booleanContext = window.matchMedia("(prefers-contrast)");
+ let noPref = window.matchMedia("(prefers-contrast: no-preference)");
+ assert_equals(noPref.matches, !booleanContext.matches);
+}, "Check boolean context evaluation.");
+</script>