mozilla-central/dom/xhr/tests/browser_block_sync_xhr_system_requests.js (file symbol)

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Test Info:

/* Any copyright is dedicated to the Public Domain.
add_task(async function test_block_sync_xhr_requests() {
await SpecialPowers.pushPrefEnv({
set: [["network.xhr.block_sync_system_requests", true]],
});
Assert.throws(
() => {
let xhr = new XMLHttpRequest();
// false means a synchronous request
xhr.open("GET", "https://example.com", false);
xhr.send();
},
/NetworkError/,
"Sync XHR coming from system requests should be blocked"
);
});
add_task(async function test_not_block_sync_xhr_requests() {
await SpecialPowers.pushPrefEnv({
set: [["network.xhr.block_sync_system_requests", false]],
});
let xhr = new XMLHttpRequest();
xhr.open("GET", "https://example.com", false);
xhr.send();
is(
xhr.status,
200,
"Sync XHR coming from system requests should be allowed when pref is false"
);
});