mozilla-central/layout/style/test/test_placeholder_restrictions.html (file symbol)

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Test Info:

<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 1382786</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="property_database.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<style id="s"></style>
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<input id="test">
<input id="control">
<script type="application/javascript">
/** Test for Bug 1382786 **/
var test = getComputedStyle($("test"), "::placeholder");
var control = getComputedStyle($("control"), "::placeholder");
for (let prop in gCSSProperties) {
var info = gCSSProperties[prop];
if (info.type == CSS_TYPE_TRUE_SHORTHAND) {
// Can't get useful info out of getComputedStyle.
continue;
}
let prereqs = "";
if (info.prerequisites) {
for (let name in info.prerequisites) {
prereqs += `${name}: ${info.prerequisites[name]}; `;
}
}
$("s").textContent = `
#control::placeholder { ${prop}: ${info.initial_values[0]}; ${prereqs} }
#test::placeholder { ${prop}: ${info.other_values[0]}; ${prereqs} }
`;
// line-height does apply to ::placeholder, but only on <textarea>. We could
// switch the test to use a <textarea>.
if (info.applies_to_placeholder && prop != "line-height") {
isnot(get_computed_value(test, prop),
get_computed_value(control, prop),
`${prop} should apply to ::placeholder`);
} else {
is(get_computed_value(test, prop),
get_computed_value(control, prop),
`${prop} should not apply to ::placeholder`);
}
}
</script>
</body>
</html>