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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=819930
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 819930</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/WindowSnapshot.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
<style>
@media braille {
body {
background-color: rgb(255, 255, 0);
}
}
@media embossed {
body {
background-color: rgb(210, 180, 140);
}
}
@media handheld {
body {
background-color: rgb(0, 255, 0);
}
}
@media print {
body {
background-color: rgb(0, 255, 255);
}
}
@media projection {
body {
background-color: rgb(30, 144, 255);
}
}
@media screen {
body {
background-color: green;
}
}
@media speech {
body {
background-color: rgb(192, 192, 192);
}
}
@media tty {
body {
background-color: rgb(255, 192, 203);
}
}
@media tv {
body {
background-color: rgb(75, 0, 130);
}
}
</style>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=819930">Mozilla Bug 819930</a>
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test">
<script type="application/javascript;version=1.7">
let tests = [{name: 'braille', value: 'rgb(255, 255, 0)'},
{name: 'embossed', value: 'rgb(210, 180, 140)'},
{name: 'handheld', value: 'rgb(0, 255, 0)'},
{name: 'print', value: 'rgb(0, 255, 255)'},
{name: 'projection', value: 'rgb(30, 144, 255)'},
{name: 'speech', value: 'rgb(192, 192, 192)'},
{name: 'tty', value: 'rgb(255, 192, 203)'},
{name: 'tv', value: 'rgb(75, 0, 130)'}];
let originalColor = 'rgb(0, 128, 0)';
let body = document.body;
let getColor = function() {
return window.getComputedStyle(body)
.getPropertyValue('background-color');
};
tests.forEach(function(test) {
// Emulate the given media
SpecialPowers.emulateMedium(window, test.name);
is(getColor(), test.value, 'emulating ' + test.name + ' produced ' +
'correct rendering');
// Do the @media screen rules get applied after ending the emulation?
SpecialPowers.stopEmulatingMedium(window);
is(getColor(), originalColor, 'Ending ' + test.name +
' emulation restores style for original medium');
// CSS media types are case-insensitive; we should be too.
SpecialPowers.emulateMedium(window, test.name.toUpperCase());
is(getColor(), test.value,
test.name + ' emulation is case-insensitive');
SpecialPowers.stopEmulatingMedium(window);
});
// Emulating screen should produce the same rendering as when there is
// no emulation in effect
SpecialPowers.emulateMedium(window, 'screen');
is(getColor(), originalColor,
'Emulating screen produces original rendering');
SpecialPowers.stopEmulatingMedium(window);
// Screen should be case-insensitive too
SpecialPowers.emulateMedium(window, 'SCREEN');
is(getColor(), originalColor, 'screen emulation is case-insensitive');
SpecialPowers.stopEmulatingMedium(window);
// An invalid parameter shouldn't fail. Given the CSS rules above,
// an invalid parameter should result in a different rendering from any
// produced thus far
try {
SpecialPowers.emulateMedium(window, 'clay');
let invalid = getColor();
tests.push({name: 'screen', value: 'green'});
tests.forEach(function(test) {
isnot(invalid, test.value, 'Emulating invalid type differs from ' +
test.name);
});
} catch (e) {
ok(false, 'Supplying invalid type to emulateMedium shouldn\'t throw');
}
SpecialPowers.stopEmulatingMedium(window);
</script>
</pre>
</body>
</html>
|
