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"use strict";
add_task(async function test_background_reload_and_unload() {
let events = [];
{
const { Management } = ChromeUtils.importESModule(
"resource://gre/modules/Extension.sys.mjs"
);
let record = (type, extensionContext) => {
let eventType = type == "proxy-context-load" ? "load" : "unload";
let url = extensionContext.uri.spec;
let extensionId = extensionContext.extension.id;
events.push({ eventType, url, extensionId });
};
Management.on("proxy-context-load", record);
Management.on("proxy-context-unload", record);
registerCleanupFunction(() => {
Management.off("proxy-context-load", record);
Management.off("proxy-context-unload", record);
});
}
let extension = ExtensionTestUtils.loadExtension({
background() {
browser.test.onMessage.addListener(msg => {
browser.test.assertEq("reload-background", msg);
location.reload();
});
browser.test.sendMessage("background-url", location.href);
},
});
await extension.startup();
let backgroundUrl = await extension.awaitMessage("background-url");
let contextEvents = events.splice(0);
equal(
contextEvents.length,
1,
"ExtensionContext state change after loading an extension"
);
equal(contextEvents[0].eventType, "load");
equal(
contextEvents[0].url,
backgroundUrl,
"The ExtensionContext should be the background page"
);
extension.sendMessage("reload-background");
await extension.awaitMessage("background-url");
contextEvents = events.splice(0);
equal(
contextEvents.length,
2,
"ExtensionContext state changes after reloading the background page"
);
equal(
contextEvents[0].eventType,
"unload",
"Unload ExtensionContext of background page"
);
equal(
contextEvents[0].url,
backgroundUrl,
"ExtensionContext URL = background"
);
equal(
contextEvents[1].eventType,
"load",
"Create new ExtensionContext for background page"
);
equal(
contextEvents[1].url,
backgroundUrl,
"ExtensionContext URL = background"
);
await extension.unload();
contextEvents = events.splice(0);
equal(
contextEvents.length,
1,
"ExtensionContext state change after unloading the extension"
);
equal(
contextEvents[0].eventType,
"unload",
"Unload ExtensionContext for background page after extension unloads"
);
equal(
contextEvents[0].url,
backgroundUrl,
"ExtensionContext URL = background"
);
});
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