test_action-export-snapshot.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Test exporting a snapshot to a user specified location on disk.

const {

  exportSnapshot,

} = require("resource://devtools/client/memory/actions/io.js");

const {

  takeSnapshotAndCensus,

} = require("resource://devtools/client/memory/actions/snapshot.js");

const {

  actions,

  treeMapState,

} = require("resource://devtools/client/memory/constants.js");

add_task(async function () {

  const front = new StubbedMemoryFront();

  const heapWorker = new HeapAnalysesClient();

  await front.attach();

  const store = Store();

  const { getState, dispatch } = store;

  const destPath = await createTempFile();

  dispatch(takeSnapshotAndCensus(front, heapWorker));

  await waitUntilCensusState(store, snapshot => snapshot.treeMap, [

    treeMapState.SAVED,

]);

  const exportEvents = Promise.all([

    waitForDispatch(store, actions.EXPORT_SNAPSHOT_START),

    waitForDispatch(store, actions.EXPORT_SNAPSHOT_END),

]);

  dispatch(exportSnapshot(getState().snapshots[0], destPath));

  await exportEvents;

  const stat = await IOUtils.stat(destPath);

  info(stat.size);

  Assert.greater(stat.size, 0, "destination file is more than 0 bytes");

  heapWorker.destroy();

  await front.detach();

});