browser_net_error-boundary-01.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

/**

 * Test that top-level net monitor error boundary catches child errors.

*/

add_task(async function () {

  const { monitor } = await initNetMonitor(SIMPLE_URL, {

    requestCount: 1,

});

  const { store, windowRequire, document } = monitor.panelWin;

  const Actions = windowRequire("devtools/client/netmonitor/src/actions/index");

  store.dispatch(Actions.batchEnable(false));

  // Intentionally damage the store to cause a child component error

  const state = store.getState();

  state.ui.columns = null;

  await reloadBrowser();

  // Wait for the panel to fall back to the error UI

  const errorPanel = await waitUntil(() =>

    document.querySelector(".app-error-panel")

);

  is(errorPanel, !undefined);

  return teardown(monitor);

});