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async function testInvalidHeader(t, header_value) {
const params = new URLSearchParams();
params.set("header-value", header_value);
const test_url = "resources/invalid-headers-in-early-hints.h2.py?" + params.toString();
const opened_window = window.open(test_url, "invalid-header-in-early-hints");
// Use step_timeout() because neither "load" event nor postMessage() would
// work. Opening the test page should result in a network protocol error and
// accessing the document of the opened window should throw a SecurityError.
await new Promise(resolve => t.step_timeout(resolve, 1000));
assert_throws_dom("SecurityError", () => {
opened_window.document;
}, "window.open() should not load the test page successfully.");
}
promise_test(async (t) => {
await testInvalidHeader(t, "foo\r\nbar");
}, "Early Hints contains invalid header: newline byte");
promise_test(async (t) => {
await testInvalidHeader(t, "foo\x00bar");
}, "Early Hints contains invalid header: nul byte");
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