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Test Info: Errors

"use strict";
const server = createHttpServer({ hosts: ["example.com"] });
server.registerPathHandler("/HELLO", (req, res) => {
res.write("BYE");
});
add_task(async function request_from_extension_page() {
let extension = ExtensionTestUtils.loadExtension({
manifest: {
permissions: ["http://example.com/", "webRequest", "webRequestBlocking"],
},
files: {
"tab.html": `<!DOCTYPE html><script src="tab.js"></script>`,
"tab.js": async function () {
browser.webRequest.onHeadersReceived.addListener(
details => {
let { responseHeaders } = details;
responseHeaders.push({
name: "X-Added-by-Test",
value: "TheValue",
});
return { responseHeaders };
},
{
},
["blocking", "responseHeaders"]
);
// Ensure that listener is registered (workaround for bug 1300234).
await browser.runtime.getPlatformInfo();
let response = await fetch("http://example.com/HELLO");
browser.test.assertEq(
"TheValue",
response.headers.get("X-added-by-test"),
"expected response header from webRequest listener"
);
browser.test.assertEq(
await response.text(),
"BYE",
"Expected response from server"
);
browser.test.sendMessage("done");
},
},
});
await extension.startup();
let contentPage = await ExtensionTestUtils.loadContentPage(
`moz-extension://${extension.uuid}/tab.html`,
{ extension }
);
await extension.awaitMessage("done");
await contentPage.close();
await extension.unload();
});