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"use strict";
const { openTab, closeTab } = require("api-utils/tabs/utils");
exports["test unload tab observer"] = function(assert, done) {
// Hacky way to be able to create unloadable modules via makeSandboxedLoader.
let loader = assert._log.makeSandboxedLoader();
let window = loader.require("api-utils/window-utils").activeBrowserWindow;
let observer = loader.require("api-utils/tabs/observer").observer;
let opened = 0;
let closed = 0;
observer.on("open", function onOpen(window) { opened++; });
observer.on("close", function onClose(window) { closed++; });
// Open and close tab to trigger observers.
closeTab(openTab(window, "data:text/html,tab-1"));
// Unload the module so that all listeners set by observer are removed.
loader.unload();
// Open and close tab once again.
closeTab(openTab(window, "data:text/html,tab-2"));
// Enqueuing asserts to make sure that assertion is not performed early.
require("timer").setTimeout(function () {
assert.equal(1, opened, "observer open was called before unload only");
assert.equal(1, closed, "observer close was called before unload only");
done();
}, 0);
};
require("test").run(exports);
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