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Test Info: Warnings
- This test gets skipped with pattern: os == 'android'
- Manifest: devtools/client/memory/test/xpcshell/xpcshell.toml
/* Any copyright is dedicated to the Public Domain.
"use strict";
/**
* Tests the task creator `importSnapshotAndCensus()` for the whole flow of
* importing a snapshot, and its sub-actions.
*/
const {
actions,
snapshotState: states,
treeMapState,
const {
exportSnapshot,
importSnapshotAndCensus,
const {
takeSnapshotAndCensus,
add_task(async function () {
const front = new StubbedMemoryFront();
const heapWorker = new HeapAnalysesClient();
await front.attach();
const store = Store();
const { subscribe, dispatch, getState } = store;
const destPath = await createTempFile();
dispatch(takeSnapshotAndCensus(front, heapWorker));
await waitUntilCensusState(store, s => s.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;
// Now import our freshly exported snapshot
let snapshotI = 0;
let censusI = 0;
const snapshotStates = ["IMPORTING", "READING", "READ"];
const censusStates = ["SAVING", "SAVED"];
const expectStates = () => {
const snapshot = getState().snapshots[1];
if (!snapshot) {
return;
}
if (snapshotI < snapshotStates.length) {
const isCorrectState =
snapshot.state === states[snapshotStates[snapshotI]];
if (isCorrectState) {
ok(true, `Found expected snapshot state ${snapshotStates[snapshotI]}`);
snapshotI++;
}
}
if (snapshot.treeMap && censusI < censusStates.length) {
if (snapshot.treeMap.state === treeMapState[censusStates[censusI]]) {
ok(true, `Found expected census state ${censusStates[censusI]}`);
censusI++;
}
}
};
const unsubscribe = subscribe(expectStates);
dispatch(importSnapshotAndCensus(heapWorker, destPath));
await waitUntilState(store, () => {
return (
snapshotI === snapshotStates.length && censusI === censusStates.length
);
});
unsubscribe();
equal(
snapshotI,
snapshotStates.length,
"importSnapshotAndCensus() produces the correct sequence of states in a snapshot"
);
equal(
getState().snapshots[1].state,
states.READ,
"imported snapshot is in READ state"
);
equal(
censusI,
censusStates.length,
"importSnapshotAndCensus() produces the correct sequence of states in a census"
);
equal(
getState().snapshots[1].treeMap.state,
treeMapState.SAVED,
"imported snapshot is in READ state"
);
ok(getState().snapshots[1].selected, "imported snapshot is selected");
// Check snapshot data
const snapshot1 = getState().snapshots[0];
const snapshot2 = getState().snapshots[1];
equal(
snapshot1.treeMap.display,
snapshot2.treeMap.display,
"imported snapshot has correct display"
);
// Clone the census data so we can destructively remove the ID/parents to compare
// equal census data
const census1 = stripUnique(
JSON.parse(JSON.stringify(snapshot1.treeMap.report))
);
const census2 = stripUnique(
JSON.parse(JSON.stringify(snapshot2.treeMap.report))
);
equal(
JSON.stringify(census1),
JSON.stringify(census2),
"Imported snapshot has correct census"
);
function stripUnique(obj) {
const children = obj.children || [];
for (const child of children) {
delete child.id;
delete child.parent;
stripUnique(child);
}
delete obj.id;
delete obj.parent;
return obj;
}
});