mozilla-central/devtools/client/memory/test/xpcshell/test_action-set-display.js (file symbol)

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Test Info: Warnings

/* Any copyright is dedicated to the Public Domain.
"use strict";
/**
* Tests the action creator `setCensusDisplay()` for display changing. Does not
* test refreshing the census information, check `setCensusDisplayAndRefresh`
* action for that.
*/
const {
censusDisplays,
censusState,
viewState,
} = require("resource://devtools/client/memory/constants.js");
const {
setCensusDisplay,
} = require("resource://devtools/client/memory/actions/census-display.js");
const {
takeSnapshotAndCensus,
} = require("resource://devtools/client/memory/actions/snapshot.js");
const {
changeView,
} = require("resource://devtools/client/memory/actions/view.js");
// We test setting an invalid display, which triggers an assertion failure.
EXPECTED_DTU_ASSERT_FAILURE_COUNT = 1;
add_task(async function () {
const front = new StubbedMemoryFront();
const heapWorker = new HeapAnalysesClient();
await front.attach();
const store = Store();
const { getState, dispatch } = store;
dispatch(changeView(viewState.CENSUS));
// Test default display with no snapshots
equal(
getState().censusDisplay.breakdown.by,
"coarseType",
"default coarseType display selected at start."
);
dispatch(setCensusDisplay(censusDisplays.allocationStack));
equal(
getState().censusDisplay.breakdown.by,
"allocationStack",
"display changed with no snapshots"
);
// Test invalid displays
try {
dispatch(setCensusDisplay({}));
ok(false, "Throws when passing in an invalid display object");
} catch (e) {
ok(true, "Throws when passing in an invalid display object");
}
equal(
getState().censusDisplay.breakdown.by,
"allocationStack",
"current display unchanged when passing invalid display"
);
// Test new snapshots
dispatch(takeSnapshotAndCensus(front, heapWorker));
await waitUntilCensusState(store, s => s.census, [censusState.SAVED]);
equal(
getState().snapshots[0].census.display,
censusDisplays.allocationStack,
"New snapshots use the current, non-default display"
);
});