vault-link/frontend/sync-client/src/sync-operations/sync-event-queue.test.ts
2026-05-05 21:50:27 +01:00

907 lines
33 KiB
TypeScript

import { describe, it } from "node:test";
import assert from "node:assert";
import {
STORED_STATE_SCHEMA_VERSION,
SyncEventQueue
} from "./sync-event-queue";
import { Settings } from "../persistence/settings";
import { Logger } from "../tracing/logger";
import type { DocumentVersionWithoutContent } from "../services/types/DocumentVersionWithoutContent";
import { SyncEventType } from "./types";
import type { DocumentRecord, RelativePath, StoredSyncState } from "./types";
interface QueueHarness {
queue: SyncEventQueue;
settings: Settings;
saveCalls: StoredSyncState[];
}
function createHarness(
options: {
ignorePatterns?: string[];
initialState?: Partial<StoredSyncState>;
omitSchemaVersion?: boolean;
} = {}
): QueueHarness {
const logger = new Logger();
const settings = new Settings(
logger,
{ ignorePatterns: options.ignorePatterns ?? [] },
async () => {
/* no-op */
}
);
const saveCalls: StoredSyncState[] = [];
const initialState: Partial<StoredSyncState> | undefined =
options.initialState === undefined && options.omitSchemaVersion !== true
? { schemaVersion: STORED_STATE_SCHEMA_VERSION }
: options.initialState;
const queue = new SyncEventQueue(
settings,
logger,
initialState,
async (data) => {
saveCalls.push(data);
}
);
return { queue, settings, saveCalls };
}
function createQueue(ignorePatterns: string[] = []): SyncEventQueue {
return createHarness({ ignorePatterns }).queue;
}
function fakeRemoteVersion(
documentId: string,
overrides: Partial<DocumentVersionWithoutContent> = {}
): DocumentVersionWithoutContent {
return {
vaultUpdateId: 1,
documentId,
relativePath: `${documentId}.md`,
updatedDate: "2026-01-01",
isDeleted: false,
userId: "user",
deviceId: "device",
contentSize: 100,
isNewFile: true,
...overrides
};
}
function fakeRecord(
documentId: string,
overrides: Partial<DocumentRecord> = {}
): DocumentRecord {
const path = `${documentId.toLowerCase()}.md`;
return {
documentId,
parentVersionId: 1,
remoteHash: `hash-${documentId}`,
remoteRelativePath: path,
localPath: path,
...overrides
};
}
describe("SyncEventQueue", () => {
it("returns enqueued events in FIFO order with no coalescing", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "b.md" });
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "c.md" });
await queue.enqueue({ type: SyncEventType.LocalDelete, path: "a.md" });
const first = await queue.next();
assert.strictEqual(first?.type, SyncEventType.LocalCreate);
const second = await queue.next();
assert.strictEqual(second?.type, SyncEventType.LocalCreate);
const third = await queue.next();
assert.strictEqual(third?.type, SyncEventType.LocalDelete);
assert.strictEqual(third.documentId, "A");
assert.strictEqual(await queue.next(), undefined);
});
it("create events are returned FIFO", async () => {
const queue = createQueue();
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "a.md" });
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "b.md" });
const first = await queue.next();
assert.strictEqual(first?.type, SyncEventType.LocalCreate);
assert.strictEqual(first.path, "a.md");
const second = await queue.next();
assert.strictEqual(second?.type, SyncEventType.LocalCreate);
assert.strictEqual(second.path, "b.md");
});
it("delete resolves documentId from path", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.enqueue({ type: SyncEventType.LocalDelete, path: "a.md" });
const event = await queue.next();
assert.strictEqual(event?.type, SyncEventType.LocalDelete);
assert.strictEqual(event.documentId, "A");
});
it("delete for unknown path is silently ignored", async () => {
const queue = createQueue();
await queue.enqueue({
type: SyncEventType.LocalDelete,
path: "unknown.md"
});
assert.strictEqual(queue.pendingUpdateCount, 0);
});
it("delete clears the localPath of the affected record", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.enqueue({ type: SyncEventType.LocalDelete, path: "a.md" });
const record = queue.getDocumentByDocumentId("A");
assert.ok(record !== undefined);
assert.strictEqual(record.localPath, undefined);
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath),
undefined
);
});
it("document store CRUD operations work correctly", async () => {
const queue = createQueue();
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath),
undefined
);
assert.strictEqual(queue.syncedDocumentCount, 0);
await queue.upsertRecord(fakeRecord("A"));
assert.strictEqual(queue.syncedDocumentCount, 1);
const settled = queue.getRecordByLocalPath("a.md" as RelativePath);
assert.strictEqual(settled?.documentId, "A");
assert.strictEqual(settled.localPath, "a.md");
assert.strictEqual(settled.remoteRelativePath, "a.md");
const found = queue.getDocumentByDocumentId("A");
assert.strictEqual(found?.localPath, "a.md");
assert.strictEqual(found.documentId, "A");
await queue.removeDocumentById("A");
assert.strictEqual(queue.syncedDocumentCount, 0);
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath),
undefined
);
assert.strictEqual(queue.getDocumentByDocumentId("A"), undefined);
});
it("LocalUpdate with oldPath moves the document on disk", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.enqueue({
type: SyncEventType.LocalUpdate,
path: "b.md",
oldPath: "a.md"
});
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath),
undefined
);
const moved = queue.getRecordByLocalPath("b.md" as RelativePath);
assert.strictEqual(moved?.documentId, "A");
assert.strictEqual(moved.localPath, "b.md");
// The doc's remoteRelativePath is owned by the wire loop, not the
// watcher path — a local rename does not move the server-side path.
assert.strictEqual(moved.remoteRelativePath, "a.md");
});
it("LocalUpdate rename onto a tracked slot enqueues a delete for the displaced doc", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.upsertRecord(fakeRecord("B"));
// User renames a.md onto b.md, clobbering b.md on disk.
await queue.enqueue({
type: SyncEventType.LocalUpdate,
path: "b.md",
oldPath: "a.md"
});
// Doc A now lives at b.md.
const aRecord = queue.getDocumentByDocumentId("A");
assert.strictEqual(aRecord?.localPath, "b.md");
const slot = queue.getRecordByLocalPath("b.md" as RelativePath);
assert.strictEqual(slot?.documentId, "A");
// Doc B has no local file anymore (its bytes were overwritten).
const bRecord = queue.getDocumentByDocumentId("B");
assert.strictEqual(bRecord?.localPath, undefined);
// Two events should be queued: the LocalDelete for B, then the
// LocalUpdate for A (push order in `enqueue`).
assert.strictEqual(queue.pendingUpdateCount, 2);
const first = await queue.next();
assert.strictEqual(first?.type, SyncEventType.LocalDelete);
assert.strictEqual(first.documentId, "B");
assert.strictEqual(first.path, "b.md");
const second = await queue.next();
assert.strictEqual(second?.type, SyncEventType.LocalUpdate);
assert.strictEqual(second.documentId, "A");
assert.strictEqual(second.path, "b.md");
assert.strictEqual(second.isUserRename, true);
});
it("settled record owns a path over a stale pending create", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A", { localPath: "b.md" }));
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "b.md" });
await queue.enqueue({
type: SyncEventType.LocalUpdate,
path: "c.md",
oldPath: "b.md"
});
const aRecord = queue.getDocumentByDocumentId("A");
assert.strictEqual(aRecord?.localPath, "c.md");
assert.strictEqual(
queue.getRecordByLocalPath("b.md" as RelativePath),
undefined
);
assert.strictEqual(
queue.getRecordByLocalPath("c.md" as RelativePath)?.documentId,
"A"
);
const create = await queue.next();
assert.strictEqual(create?.type, SyncEventType.LocalCreate);
assert.strictEqual(create.path, "b.md");
const update = await queue.next();
assert.strictEqual(update?.type, SyncEventType.LocalUpdate);
assert.strictEqual(update.documentId, "A");
assert.strictEqual(update.path, "c.md");
});
it("byLocalPath stays consistent across upsertRecord, setLocalPath, and rename", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
assert.strictEqual(queue.byLocalPath.size, 1);
assert.strictEqual(
queue.byLocalPath.get("a.md" as RelativePath)?.documentId,
"A"
);
// upsertRecord on an existing record with a non-undefined
// localPath does NOT rewrite localPath. The watcher path and the
// reconciler are the only authorities on localPath of an
// already-placed record; letting the wire loop re-key here would
// race a user rename that landed during an HTTP roundtrip.
await queue.upsertRecord(
fakeRecord("A", { localPath: "renamed.md" as RelativePath })
);
assert.strictEqual(queue.byLocalPath.size, 1);
assert.strictEqual(
queue.byLocalPath.get("a.md" as RelativePath)?.documentId,
"A"
);
assert.strictEqual(
queue.byLocalPath.get("renamed.md" as RelativePath),
undefined
);
assert.strictEqual(queue.getDocumentByDocumentId("A")?.localPath, "a.md");
// setLocalPath does re-key — it's the explicit path-mutation API.
await queue.setLocalPath("A", "later.md" as RelativePath);
assert.strictEqual(queue.byLocalPath.size, 1);
assert.strictEqual(
queue.byLocalPath.get("a.md" as RelativePath),
undefined
);
assert.strictEqual(
queue.byLocalPath.get("later.md" as RelativePath)?.documentId,
"A"
);
// setLocalPath to undefined should drop the entry.
await queue.setLocalPath("A", undefined);
assert.strictEqual(queue.byLocalPath.size, 0);
assert.strictEqual(
queue.byLocalPath.get("later.md" as RelativePath),
undefined
);
// The record is still tracked by docId.
assert.strictEqual(
queue.getDocumentByDocumentId("A")?.localPath,
undefined
);
});
it("upsertRecord installs localPath only when the existing record has none (placement-pending → placed)", async () => {
const queue = createQueue();
// Same-docId-collapse shape: a placement-pending record (created
// earlier by a remote-create handler when the slot was occupied)
// gets resolved by a LocalCreate that returns the same docId.
// The watcher hasn't touched localPath since the record is
// placement-pending, so installing the now-known path is correct.
await queue.upsertRecord(fakeRecord("A", { localPath: undefined }));
assert.strictEqual(queue.byLocalPath.size, 0);
await queue.upsertRecord(
fakeRecord("A", { localPath: "fresh.md" as RelativePath })
);
assert.strictEqual(queue.byLocalPath.size, 1);
assert.strictEqual(
queue.byLocalPath.get("fresh.md" as RelativePath)?.documentId,
"A"
);
assert.strictEqual(
queue.getDocumentByDocumentId("A")?.localPath,
"fresh.md"
);
});
it("upsertRecord ignores stale localPath from the wire loop after a watcher rename", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
// Watcher renames a.md -> renamed.md while the wire loop is
// mid-roundtrip. The wire loop captured an earlier snapshot of
// localPath and now tries to write it back through upsertRecord.
await queue.enqueue({
type: SyncEventType.LocalUpdate,
path: "renamed.md",
oldPath: "a.md"
});
assert.strictEqual(
queue.getDocumentByDocumentId("A")?.localPath,
"renamed.md"
);
await queue.upsertRecord(
fakeRecord("A", {
parentVersionId: 2,
remoteRelativePath: "a.md",
remoteHash: "hash-A-v2",
localPath: "a.md" as RelativePath
})
);
// The watcher's rename wins: localPath stays at renamed.md.
const record = queue.getDocumentByDocumentId("A");
assert.strictEqual(record?.localPath, "renamed.md");
assert.strictEqual(record.parentVersionId, 2);
assert.strictEqual(record.remoteRelativePath, "a.md");
assert.strictEqual(record.remoteHash, "hash-A-v2");
assert.strictEqual(
queue.byLocalPath.get("renamed.md" as RelativePath)?.documentId,
"A"
);
assert.strictEqual(
queue.byLocalPath.get("a.md" as RelativePath),
undefined
);
});
it("create can be re-enqueued after being dequeued", async () => {
const queue = createQueue();
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "a.md" });
await queue.next();
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "a.md" });
assert.strictEqual(queue.pendingUpdateCount, 1);
});
it("silently ignores create events matching ignore patterns", async () => {
const queue = createQueue(["*.tmp", ".hidden/**"]);
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: "scratch.tmp"
});
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: ".hidden/secret.md"
});
assert.strictEqual(queue.pendingUpdateCount, 0);
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: "notes-new.md"
});
assert.strictEqual(queue.pendingUpdateCount, 1);
await queue.enqueue({
type: SyncEventType.RemoteChange,
remoteVersion: fakeRemoteVersion("N")
});
assert.strictEqual(queue.pendingUpdateCount, 2);
});
it("addInternalIgnorePattern hides paths from enqueue and survives settings reload", async () => {
const harness = createHarness({ ignorePatterns: ["*.tmp"] });
const { queue, settings } = harness;
queue.addInternalIgnorePattern(".vaultlink/**");
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: ".vaultlink/swap"
});
assert.strictEqual(queue.pendingUpdateCount, 0);
// User-pattern matching still works alongside the internal pattern.
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: "scratch.tmp"
});
assert.strictEqual(queue.pendingUpdateCount, 0);
// Settings reload must not forget the internal pattern.
await settings.setSettings({ ignorePatterns: ["*.bak"] });
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: ".vaultlink/another"
});
assert.strictEqual(queue.pendingUpdateCount, 0);
// The new user pattern took effect.
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: "old.bak"
});
assert.strictEqual(queue.pendingUpdateCount, 0);
// And paths outside both pattern sets still pass through.
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: "notes.md"
});
assert.strictEqual(queue.pendingUpdateCount, 1);
});
it("clearPending removes events but keeps documents", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "b.md" });
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "c.md" });
assert.strictEqual(queue.pendingUpdateCount, 2);
queue.clearPending();
assert.strictEqual(queue.pendingUpdateCount, 0);
assert.strictEqual(queue.syncedDocumentCount, 1);
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath)?.documentId,
"A"
);
});
it("allSettledDocuments returns all tracked documents that have a localPath", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.upsertRecord(fakeRecord("B"));
// A doc with no local file (e.g. a remote create whose slot was
// occupied) should not appear in the localPath-keyed view.
await queue.upsertRecord(fakeRecord("C", { localPath: undefined }));
const docs = queue.allSettledDocuments();
assert.strictEqual(docs.size, 2);
const paths = Array.from(docs.keys()).sort();
assert.deepStrictEqual(paths, ["a.md", "b.md"]);
});
it("loads initial state from persistence", () => {
const harness = createHarness({
initialState: {
schemaVersion: STORED_STATE_SCHEMA_VERSION,
documents: [
fakeRecord("A", { parentVersionId: 5 }),
fakeRecord("B", { parentVersionId: 3 })
],
lastSeenUpdateId: 4
}
});
const { queue } = harness;
assert.strictEqual(queue.syncedDocumentCount, 2);
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath)?.documentId,
"A"
);
assert.strictEqual(
queue.getRecordByLocalPath("b.md" as RelativePath)?.documentId,
"B"
);
assert.strictEqual(queue.lastSeenUpdateId, 4);
});
it("constructor with mismatched schema version wipes state and saves the new version", () => {
const harness = createHarness({
initialState: {
schemaVersion: 0,
documents: [fakeRecord("A"), fakeRecord("B")],
lastSeenUpdateId: 7
}
});
// Persisted documents and watermark were discarded.
assert.strictEqual(harness.queue.syncedDocumentCount, 0);
assert.strictEqual(harness.queue.lastSeenUpdateId, 0);
// The constructor scheduled a save (don't await — fire-and-forget),
// but we synchronously enqueued it so it should have landed by now.
// The recorded save uses the current schema version.
assert.ok(harness.saveCalls.length >= 1);
const last = harness.saveCalls[harness.saveCalls.length - 1];
assert.strictEqual(last.schemaVersion, STORED_STATE_SCHEMA_VERSION);
assert.deepStrictEqual(last.documents, []);
assert.strictEqual(last.lastSeenUpdateId, 0);
});
it("constructor with missing schema version also wipes state", () => {
const harness = createHarness({
initialState: {
documents: [fakeRecord("A")],
lastSeenUpdateId: 3
}
});
assert.strictEqual(harness.queue.syncedDocumentCount, 0);
assert.strictEqual(harness.queue.lastSeenUpdateId, 0);
assert.ok(harness.saveCalls.length >= 1);
assert.strictEqual(
harness.saveCalls[harness.saveCalls.length - 1].schemaVersion,
STORED_STATE_SCHEMA_VERSION
);
});
it("resolveCreate settles the document and resolves the create promise", async () => {
const queue = createQueue();
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "a.md" });
const event = await queue.next(); // dequeue the create
assert.ok(event?.type === SyncEventType.LocalCreate);
const createPromise = event.resolvers.promise;
await queue.resolveCreate(
event,
fakeRecord("DOC-1", {
parentVersionId: 5,
localPath: "a.md" as RelativePath,
remoteRelativePath: "a.md" as RelativePath
})
);
// Document is now settled
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath)?.documentId,
"DOC-1"
);
// Promise was resolved
assert.strictEqual(await createPromise, "DOC-1");
});
it("delete collapses a pending create that has not started processing", async () => {
const queue = createQueue();
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "a.md" });
const create = queue.peekFront();
assert.ok(create?.type === SyncEventType.LocalCreate);
await queue.enqueue({ type: SyncEventType.LocalDelete, path: "a.md" });
assert.strictEqual(queue.pendingUpdateCount, 0);
assert.strictEqual(await queue.next(), undefined);
await assert.rejects(create.resolvers.promise, /cancelled/);
});
it("resolveCreate does not claim a localPath after an in-flight pending create was deleted", async () => {
const queue = createQueue();
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "a.md" });
const create = queue.peekFront();
assert.ok(create?.type === SyncEventType.LocalCreate);
create.isProcessing = true;
await queue.enqueue({ type: SyncEventType.LocalDelete, path: "a.md" });
await queue.resolveCreate(
create,
fakeRecord("DOC-1", {
localPath: "a.md" as RelativePath,
remoteRelativePath: "a.md" as RelativePath
})
);
assert.strictEqual(
queue.getDocumentByDocumentId("DOC-1")?.localPath,
undefined
);
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath),
undefined
);
const deleteEvent = await queue.next();
assert.strictEqual(deleteEvent?.type, SyncEventType.LocalDelete);
assert.strictEqual(deleteEvent.documentId, "DOC-1");
});
it("resolveCreate only clears localPath for a pending delete of that path", async () => {
const queue = createQueue();
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: "old.md"
});
const create = queue.peekFront();
assert.ok(create?.type === SyncEventType.LocalCreate);
create.isProcessing = true;
await queue.enqueue({
type: SyncEventType.LocalDelete,
path: "old.md"
});
await queue.resolveCreate(
create,
fakeRecord("DOC-1", {
localPath: "new.md" as RelativePath,
remoteRelativePath: "new.md" as RelativePath
})
);
assert.strictEqual(
queue.getDocumentByDocumentId("DOC-1")?.localPath,
"new.md"
);
assert.strictEqual(
queue.getRecordByLocalPath("new.md" as RelativePath)?.documentId,
"DOC-1"
);
const deleteEvent = await queue.next();
assert.strictEqual(deleteEvent?.type, SyncEventType.LocalDelete);
assert.strictEqual(deleteEvent.documentId, "DOC-1");
assert.strictEqual(deleteEvent.path, "old.md");
});
it("pending create owns a same-path delete over a stale deleting record", async () => {
const queue = createQueue();
await queue.upsertRecord(
fakeRecord("OLD", { localPath: "a.md" as RelativePath })
);
queue.markServerDeletePending("OLD");
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "a.md" });
const create = queue.peekFront();
assert.ok(create?.type === SyncEventType.LocalCreate);
create.isProcessing = true;
await queue.enqueue({ type: SyncEventType.LocalDelete, path: "a.md" });
assert.strictEqual(
queue.getDocumentByDocumentId("OLD")?.localPath,
undefined
);
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath),
undefined
);
const createEvent = await queue.next();
assert.strictEqual(createEvent, create);
const deleteEvent = await queue.next();
assert.strictEqual(deleteEvent?.type, SyncEventType.LocalDelete);
assert.strictEqual(deleteEvent.documentId, create.resolvers.promise);
});
it("rename of a queued create drains same-path deletes first", async () => {
const queue = createQueue();
await queue.upsertRecord(
fakeRecord("OLD", { localPath: "target.md" as RelativePath })
);
await queue.enqueue({
type: SyncEventType.LocalCreate,
path: "source.md"
});
const create = queue.peekFront();
assert.ok(create?.type === SyncEventType.LocalCreate);
await queue.enqueue({
type: SyncEventType.LocalDelete,
path: "target.md"
});
await queue.enqueue({
type: SyncEventType.LocalUpdate,
oldPath: "source.md",
path: "target.md"
});
const deleteEvent = await queue.next();
assert.strictEqual(deleteEvent?.type, SyncEventType.LocalDelete);
assert.strictEqual(deleteEvent.documentId, "OLD");
assert.strictEqual(deleteEvent.path, "target.md");
const createEvent = await queue.next();
assert.strictEqual(createEvent, create);
assert.strictEqual(createEvent.path, "target.md");
const updateEvent = await queue.next();
assert.strictEqual(updateEvent?.type, SyncEventType.LocalUpdate);
assert.strictEqual(updateEvent.documentId, create.resolvers.promise);
assert.strictEqual(updateEvent.path, "target.md");
});
it("findLatestCreateForPath returns the pending create", async () => {
const queue = createQueue();
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "a.md" });
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "b.md" });
const found = queue.findLatestCreateForPath("a.md" as RelativePath);
assert.ok(found !== undefined);
assert.strictEqual(found.path, "a.md");
const missing = queue.findLatestCreateForPath("c.md" as RelativePath);
assert.strictEqual(missing, undefined);
});
it("hasPendingEventsForPath reflects pending events", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
assert.strictEqual(
queue.hasPendingEventsForPath("a.md" as RelativePath),
false
);
await queue.enqueue({ type: SyncEventType.LocalDelete, path: "a.md" });
// After a delete the localPath is cleared; an unknown path is treated
// as "must be pending creation", so this still returns true.
assert.strictEqual(
queue.hasPendingEventsForPath("a.md" as RelativePath),
true
);
});
it("setLocalPath displaces a previous holder of the same path", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.upsertRecord(
fakeRecord("B", { localPath: "b.md" as RelativePath })
);
// Move B onto a.md — the slot already held by A. The invariant
// requires A's localPath to be cleared (placement-pending),
// and byLocalPath["a.md"] === B.
await queue.setLocalPath("B", "a.md" as RelativePath);
const a = queue.getDocumentByDocumentId("A");
const b = queue.getDocumentByDocumentId("B");
assert.strictEqual(a?.localPath, undefined);
assert.strictEqual(b?.localPath, "a.md");
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath)?.documentId,
"B"
);
// B's old slot is now empty — nothing else moved into it.
assert.strictEqual(
queue.getRecordByLocalPath("b.md" as RelativePath),
undefined
);
});
it("upsertRecord displaces a previous holder of the same path", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
// A new record (different docId) claims a.md. The prior holder
// (A) must be displaced — its localPath cleared, and
// byLocalPath["a.md"] now points at the new record.
await queue.upsertRecord(
fakeRecord("B", { localPath: "a.md" as RelativePath })
);
const a = queue.getDocumentByDocumentId("A");
const b = queue.getDocumentByDocumentId("B");
assert.strictEqual(a?.localPath, undefined);
assert.strictEqual(b?.localPath, "a.md");
assert.strictEqual(
queue.getRecordByLocalPath("a.md" as RelativePath)?.documentId,
"B"
);
});
it("the localPath/byLocalPath invariant holds across rename + recreate cycles", async () => {
// Construct the exact same-path create cycle that produces the
// bug-D race: docA at P, then docB created at P (via
// upsertRecord), and finally a setLocalPath that would move a
// third doc onto P. The invariant must hold at every step:
// exactly one record has localPath===P at any given time, and
// byLocalPath.get(P) returns it.
const queue = createQueue();
const path = "p.md" as RelativePath;
await queue.upsertRecord(
fakeRecord("A", { localPath: path, remoteRelativePath: path })
);
// Sanity: A holds the slot.
assert.strictEqual(queue.getRecordByLocalPath(path)?.documentId, "A");
assert.strictEqual(queue.getDocumentByDocumentId("A")?.localPath, path);
// docB created at P via upsertRecord (e.g. a remote create
// that races A's local file onto the same slot). A must be
// displaced.
await queue.upsertRecord(
fakeRecord("B", { localPath: path, remoteRelativePath: path })
);
assert.strictEqual(
queue.getDocumentByDocumentId("A")?.localPath,
undefined
);
assert.strictEqual(queue.getDocumentByDocumentId("B")?.localPath, path);
assert.strictEqual(queue.getRecordByLocalPath(path)?.documentId, "B");
// Now setLocalPath moves a third doc C onto P. B must in turn
// be displaced; the invariant still holds.
await queue.upsertRecord(
fakeRecord("C", { localPath: "c.md" as RelativePath })
);
await queue.setLocalPath("C", path);
assert.strictEqual(
queue.getDocumentByDocumentId("B")?.localPath,
undefined
);
assert.strictEqual(queue.getDocumentByDocumentId("C")?.localPath, path);
assert.strictEqual(queue.getRecordByLocalPath(path)?.documentId, "C");
// Across the whole cycle exactly one record holds the slot.
const holders = Array.from(queue.allRecords()).filter(
(r) => r.localPath === path
);
assert.strictEqual(holders.length, 1);
assert.strictEqual(holders[0].documentId, "C");
});
it("clearAllState clears everything", async () => {
const queue = createQueue();
await queue.upsertRecord(fakeRecord("A"));
await queue.enqueue({ type: SyncEventType.LocalCreate, path: "b.md" });
await queue.clearAllState();
assert.strictEqual(queue.syncedDocumentCount, 0);
assert.strictEqual(queue.pendingUpdateCount, 0);
assert.strictEqual(queue.byLocalPath.size, 0);
});
});