<!DOCTYPE html>
<meta charset="utf-8">
<meta name="flags" content="dom">
<title>CSS Test: CSSOM View matchMedia and MediaQueryList</title>
<link rel="author" title="Rune Lillesveen" href="mailto:[email protected]">
<link rel="help" href="https://www.w3.org/TR/cssom-view-1/#dom-window-matchmedia">
<link rel="help" href="https://www.w3.org/TR/cssom-view-1/#the-mediaquerylist-interface">
<link rel="help" href="https://www.w3.org/TR/cssom-1/#serializing-media-queries">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/matchMedia.js"></script>
<div id="log"></div>
<script>
"use strict";
test(() => {
assert_equals(
typeof window.matchMedia,
"function",
"FATAL ERROR: The window.matchMedia function is not present. The rest of the testsuite will fail to run."
);
}, "window.matchMedia is a function");
test(() => {
const mql = window.matchMedia("all");
assert_equals(mql.media, "all");
assert_true(mql.matches);
}, 'window.matchMedia("all") matches');
test(() => {
const mql = window.matchMedia("");
assert_equals(mql.media, "");
assert_true(mql.matches);
}, 'window.matchMedia("") matches');
test(() => {
const mql = window.matchMedia("(min-width: 1px)");
assert_equals(mql.media, "(min-width: 1px)");
assert_true(mql.matches);
}, 'window.matchMedia("(min-width: 1px)") matches');
test(() => {
const mql = window.matchMedia("::");
assert_true(mql instanceof MediaQueryList);
assert_equals(mql.media, "not all");
assert_false(mql.matches);
}, 'media query with syntax error is serialized as "not all"');
promise_test(async t => {
const iframe = await createIFrame(t, 200);
const mql = iframe.contentWindow.matchMedia("(max-width: 199px), all and (min-width: 200px)");
assert_equals(mql.media, "(max-width: 199px), (min-width: 200px)");
assert_true(mql.matches);
}, 'iframe.matchMedia("(max-width: 199px), all and (min-width: 200px)") is serialized w/o "all"');
promise_test(async t => {
const iframe = await createIFrame(t);
const mql = iframe.contentWindow.matchMedia("(min-aspect-ratio: 1/1)");
assert_true(mql.matches);
}, 'iframe.matchMedia("(min-aspect-ratio: 1/1)") matches');
promise_test(async t => {
const iframe = await createIFrame(t, 200);
const mql = iframe.contentWindow.matchMedia("(width: 200px)");
assert_true(mql.matches);
}, 'iframe.matchMedia("(width: 200px)") matches');
promise_test(async t => {
const iframe = await createIFrame(t, 200, 100);
const mql = iframe.contentWindow.matchMedia("(max-height: 50px)");
assert_false(mql.matches);
}, 'iframe.matchMedia("(max-height: 50px)") matches');
promise_test(async t => {
const iframe = await createIFrame(t, 200, 100);
const mql = iframe.contentWindow.matchMedia("(min-width: 150px)");
assert_true(mql.matches);
}, 'iframe.matchMedia("(min-width: 150px)") matches');
</script>
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