<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
// Unhandled rejections must be permitted due to the expected unhandled
// reections described below.
setup({
allow_uncaught_exception: true
});
// Running put several times is necessary to trigger the crash, but running too
// many times causes the test to timeout on windows.
let putRunsLeft = 64;
// fillStackAndRun() doesn't not cause a stack overflow in this test. This is
// probably because put() takes two arguments.
function fillStackThenCallPut(foo, request, response) {
try {
fillStackThenCallPut(foo, request, response);
} finally {
// This runs thousands of times, causing the console to spew "Uncaught
// (in promise) TypeError: Response body is already used" messages, but
// it's harmless. The rejection cannot be handled because the call
// stack is full.
if (putRunsLeft > 0) {
--putRunsLeft;
foo.put(request, response);
}
}
}
promise_test(async t => {
const request = new Request('/');
const response = new Response('foo');
const foo = await caches.open('foo');
t.add_cleanup(() => caches.delete('foo'));
await foo.put(request, response);
assert_throws_js(
RangeError, () => fillStackThenCallPut(foo, request, response),
'fillStackThenCallPut should throw');
}, 'stack overflow in IsLocked() should not crash the browser');
</script>
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