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Test Info: Warnings
- This test has a WPT meta file that expects 4 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /document-policy/required-policy/required-document-policy.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<title>Test advertised required document policy</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script> </head>
<body>
<h1>Test advertised required document policy</h1>
<script>
// The top-level document has a required document policy. Any requests for
// documents in child frames must be sent with a required policy header
// indicating a required policy at least as strict. (In this case, "at least as
// strict" means that the 'bpp' parameter must be less than or equal to the
// parent document's required value.)
callbacks = {};
window.addEventListener('message', ev => {
var id = ev.data.id;
if (id && callbacks[id]) {
callbacks[id](ev.data.requiredPolicy || null);
}
});
async_test(t => {
var iframe = document.createElement('iframe');
iframe.src = "/document-policy/echo-policy.py?id=1";
callbacks["1"] = t.step_func_done(result => {
assert_equals(result, "lossless-images-max-bpp=1.1");
});
document.body.appendChild(iframe);
}, "Child frame with no explicit policy should have the same required policy as its parent.");
async_test(t => {
var iframe = document.createElement('iframe');
iframe.src = "/document-policy/echo-policy.py?id=2";
iframe.policy = "lossless-images-max-bpp=4";
callbacks["2"] = t.step_func_done(result => {
assert_equals(result, "lossless-images-max-bpp=1.1");
});
document.body.appendChild(iframe);
}, "Child frame with a less strict required policy should have the stricter value from the parent's policy applied.");
async_test(t => {
var iframe = document.createElement('iframe');
iframe.src = "/document-policy/echo-policy.py?id=3";
iframe.policy = "lossless-images-max-bpp=1.0";
callbacks["3"] = t.step_func_done(result => {
assert_equals(result, "lossless-images-max-bpp=1.0");
});
document.body.appendChild(iframe);
}, "Child frame may have a stricter policy than the parent.");
async_test(t => {
var iframe = document.createElement('iframe');
iframe.src = "/document-policy/echo-policy.py?id=4";
iframe.policy = "font-display-late-swap=?0";
callbacks["4"] = t.step_func_done(result => {
assert_equals(result, "font-display-late-swap=?0, lossless-images-max-bpp=1.1");
});
document.body.appendChild(iframe);
}, "Any unrelated policy directives should combine with the parent's required policy.");
</script>
</body>
</html>