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StoreStorage (Durable's storage on Chord v2's store, @earendil-works/pi-durable/storage/store) passes Durable's storage conformance suite and runs Durable's harness tests (npm run test:store). The store gets owner names and claims, one id allocator, Durable's Storage semantics for refused steps, history none/latest/rewindable with reads at a point, archive revisions and applyBatch. self.follow follows Durable's synchronous observers as Chord sources. Persisted jobs: records and state in the owner's store, restarts as Durable's tasks, abort stored, deferred state. Chord's ./next export returns for the adapter surface.
24 lines
1,010 B
TypeScript
24 lines
1,010 B
TypeScript
// Tests of the id allocator (slice 6b D3, §1.2): from 2, raised by explicit ids, saturating at the safe range.
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import { describe, expect, it } from "vitest";
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import { FIRST_ID, IdAllocator } from "../../../src/next/store/allocator.ts";
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describe("the allocator", () => {
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it("mints from its value, and an explicit id raises it above itself, never lowering it", () => {
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const ids = new IdAllocator(FIRST_ID);
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expect([ids.mint(), ids.mint()]).toEqual([2, 3]);
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ids.raise(100);
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expect(ids.mint()).toBe(101);
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ids.raise(50);
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expect(ids.value).toBe(102);
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});
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it("saturates at Number.MAX_SAFE_INTEGER: that id may be written, every later mint is refused", () => {
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const ids = new IdAllocator(Number.MAX_SAFE_INTEGER - 1);
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expect(ids.mint()).toBe(Number.MAX_SAFE_INTEGER - 1);
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expect(() => ids.mint()).toThrow("ID space is exhausted");
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ids.raise(Number.MAX_SAFE_INTEGER);
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expect(ids.value).toBe(Number.MAX_SAFE_INTEGER);
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expect(() => ids.mint()).toThrow("ID space is exhausted");
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});
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});
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