<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <title>Test URL API - data:plain</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1018682">Mozilla Bug 1018682</a>

<script type="application/javascript">

var base = new URL("data:text/plain,");

let relative;
try {
  relative = new URL("a", base);
  ok(false, "Relative URL from a data:text/plain should not work.");
} catch (e) {
  ok(true, "Relative URL from a data:text/plain should not work.");
}

base.protocol = "chrome:";
is(base.protocol, "chrome:", "The protocol should be changed from data to chrome.");

try {
  relative = new URL("a", base);
  ok(true, "Relative URL from a chrome: should work.");
} catch (e) {
  ok(false, "Relative URL from a chrome: should work.");
}

base.protocol = "http:";
ok(true, "Protocol: http not changed (special scheme)");
is(base.href, "chrome://text/plain,", "Base URL is correct");

relative = new URL("a", base);
ok(relative, "This works.");
is(relative.href, "chrome://text/a", "Relative URL is correct");

</script>

</body>
</html>
