firefox-main/toolkit/components/extensions/test/xpcshell/test_ext_webRequest_error_no_response.js (file symbol)

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Test Info: Warnings

"use strict";
const server = createHttpServer({ hosts: ["example.com"] });
const BASE_URL = "http://example.com";
// Close the connection without sending any HTTP response. For a PUT request,
// nsHttpTransaction::ParseHead() returns an ignored error without setting
// mHaveAllHeaders, so nsHttpTransaction::Close() completes with mStatus=NS_OK
// and mResponseHead=null. This is the edge case ChannelWrapper::
// ActivityErrorFallbackCheck() detects, firing NS_ERROR_NET_ON_RECEIVING_FROM.
server.registerPathHandler("/put-target", (request, response) => {
response.seizePower();
response.finish();
});
add_task(async function test_error_occurred_no_response() {
const extension = ExtensionTestUtils.loadExtension({
manifest: { permissions: ["webRequest", `${BASE_URL}/`] },
background() {
browser.webRequest.onErrorOccurred.addListener(
details => browser.test.sendMessage("error-occurred", details),
{ urls: ["<all_urls>"] }
);
browser.test.onMessage.addListener(async url => {
try {
await fetch(url, { method: "PUT", body: "test" });
} catch (e) {
// Expected: server closes without sending a response.
}
});
},
});
await extension.startup();
extension.sendMessage(`${BASE_URL}/put-target`);
const { url, error } = await extension.awaitMessage("error-occurred");
equal(
url,
`${BASE_URL}/put-target`,
"onErrorOccurred fires for the right URL"
);
equal(
error,
"NS_ERROR_NET_ON_RECEIVING_FROM",
"ActivityErrorFallbackCheck fires the expected error"
);
await extension.unload();
});