ZacharyZhang-NYandClaude Opus 5.5
56eac39b1b
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
36 lines
1.7 KiB
TypeScript
36 lines
1.7 KiB
TypeScript
import { randomUUID } from "node:crypto";
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import { tmpdir } from "node:os";
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import { join } from "node:path";
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import { describe, expect, test } from "vitest";
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import { DatabaseConnection } from "../../src/main/database/connection";
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import { SnapshotService } from "../../src/main/services/snapshot-service";
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import { bumpDataVersion, currentDataVersion } from "../../src/main/services/data-version";
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import { supersedes } from "../../src/renderer/src/app/snapshot-order";
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describe("data version", () => {
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test("a snapshot read after a change carries that change's version, so its own change event needs no reload", () => {
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const connection = new DatabaseConnection(join(tmpdir(), `ac-data-version-${randomUUID()}.db`));
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const snapshot = new SnapshotService(connection.db);
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const before = snapshot.load().dataVersion;
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const announced = bumpDataVersion();
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const after = snapshot.load();
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expect(after.dataVersion).toBe(announced);
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expect(announced).toBeGreaterThan(before);
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// A later change is newer than what is shown, so it is reloaded.
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expect(bumpDataVersion()).toBeGreaterThan(after.dataVersion);
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expect(currentDataVersion()).toBe(after.dataVersion + 1);
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// Records the window never reads are not shipped with every reload.
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expect(Object.keys(after)).not.toEqual(expect.arrayContaining(["operationalEvents", "featureFlags", "approvalAssignments", "roleGrants"]));
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connection.close();
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});
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});
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describe("snapshot order", () => {
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test("a late answer read at an older version never replaces newer data on screen", () => {
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expect(supersedes(2, 1)).toBe(false);
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expect(supersedes(2, 2)).toBe(true);
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expect(supersedes(2, 3)).toBe(true);
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expect(supersedes(-1, 0)).toBe(true);
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});
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});
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