test_pop_view_01.js

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/* Any copyright is dedicated to the Public Domain.

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

"use strict";

// Test popping views from each intermediate individuals model state.

const {

  censusState,

  viewState,

  individualsState,

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

const {

  fetchIndividuals,

  takeSnapshotAndCensus,

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

const {

  changeView,

  popViewAndRefresh,

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

const TEST_STATES = [

  individualsState.COMPUTING_DOMINATOR_TREE,

  individualsState.FETCHING,

  individualsState.FETCHED,

];

add_task(async function () {

  const front = new StubbedMemoryFront();

  const heapWorker = new HeapAnalysesClient();

  await front.attach();

  const store = Store();

  const { getState, dispatch } = store;

  equal(getState().individuals, null, "no individuals state by default");

  dispatch(changeView(viewState.CENSUS));

  dispatch(takeSnapshotAndCensus(front, heapWorker));

  await waitUntilCensusState(store, s => s.census, [censusState.SAVED]);

  const root = getState().snapshots[0].census.report;

  ok(root, "Should have a census");

  const reportLeafIndex = findReportLeafIndex(root);

  ok(reportLeafIndex, "Should get a reportLeafIndex");

  const snapshotId = getState().snapshots[0].id;

  ok(snapshotId, "Should have a snapshot id");

  const breakdown = getState().snapshots[0].census.display.breakdown;

  ok(breakdown, "Should have a breakdown");

  for (const state of TEST_STATES) {

    dumpn(`Testing popping back to the old view from state = ${state}`);

    dispatch(

      fetchIndividuals(heapWorker, snapshotId, breakdown, reportLeafIndex)

);

    // Wait for the expected test state.

    await waitUntilState(store, s => {

      return (

        s.view.state === viewState.INDIVIDUALS &&

        s.individuals &&

        s.individuals.state === state

);

});

    ok(true, `Reached state = ${state}`);

    // Pop back to the CENSUS state.

    dispatch(popViewAndRefresh(heapWorker));

    await waitUntilState(store, s => {

      return s.view.state === viewState.CENSUS;

});

    ok(!getState().individuals, "Should no longer have individuals");

  heapWorker.destroy();

  await front.detach();

});