Ben Stull
110 lines
4.2 KiB
TypeScript
110 lines
4.2 KiB
TypeScript
import { describe, it, expect, beforeEach, afterEach } from "vitest";
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import * as fs from "node:fs";
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import * as os from "node:os";
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import * as path from "node:path";
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import { CoauthorStore } from "../src/store";
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import { emptyArtifact, newId, serializeArtifact, type Artifact } from "../src/model";
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let root: string;
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beforeEach(() => {
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root = fs.mkdtempSync(path.join(os.tmpdir(), "coauthor-store-"));
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});
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afterEach(() => {
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fs.rmSync(root, { recursive: true, force: true });
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});
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function withThread(): Artifact {
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const a = emptyArtifact("docs/spec.md");
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a.anchors["a1"] = { fingerprint: { text: "hello", before: "", after: "", lineHint: 0 } };
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a.threads.push({
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id: "t1",
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anchorId: "a1",
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status: "open",
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messages: [{ id: newId("m"), author: { kind: "human", id: "ben" }, body: "note", createdAt: "2026-06-10T00:00:00.000Z" }],
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});
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return a;
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}
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describe("CoauthorStore", () => {
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it("returns null for a document with no sidecar", () => {
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const store = new CoauthorStore(root);
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expect(store.load("docs/spec.md")).toBeNull();
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});
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it("computes the sidecar path as .threads/<docPath>.json", () => {
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const store = new CoauthorStore(root);
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expect(store.sidecarPath("docs/spec.md")).toBe(path.join(root, ".threads", "docs", "spec.md.json"));
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});
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it("save then load round-trips the artifact", () => {
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const store = new CoauthorStore(root);
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const a = withThread();
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store.save("docs/spec.md", a);
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expect(store.load("docs/spec.md")).toEqual(a);
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});
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it("writes byte-stable, pretty JSON (re-save is identical)", () => {
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const store = new CoauthorStore(root);
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const a = withThread();
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store.save("docs/spec.md", a);
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const first = fs.readFileSync(store.sidecarPath("docs/spec.md"), "utf8");
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store.save("docs/spec.md", store.load("docs/spec.md")!);
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const second = fs.readFileSync(store.sidecarPath("docs/spec.md"), "utf8");
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expect(second).toBe(first);
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expect(first).toBe(serializeArtifact(a));
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});
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it("update(): two writers merge sections instead of clobbering (F3 §6.2)", () => {
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const store = new CoauthorStore(root);
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store.update("d.md", (a) => {
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a.anchors["a_t"] = { fingerprint: { text: "t", before: "", after: "", lineHint: 0 } };
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a.threads.push({ id: "t1", anchorId: "a_t", status: "open", messages: [] });
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});
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store.update("d.md", (a) => {
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a.anchors["a_at"] = { fingerprint: { text: "x", before: "", after: "", lineHint: 0 } };
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a.attributions.push({
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id: "at1", anchorId: "a_at", author: { kind: "human", id: "ben" },
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createdAt: "2026-06-10T00:00:00.000Z", updatedAt: "2026-06-10T00:00:00.000Z",
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});
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});
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const loaded = store.load("d.md")!;
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expect(loaded.threads).toHaveLength(1);
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expect(loaded.attributions).toHaveLength(1);
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expect(Object.keys(loaded.anchors).sort()).toEqual(["a_at", "a_t"]);
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});
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it("update() prunes anchors no longer referenced by threads or attributions", () => {
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const store = new CoauthorStore(root);
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store.update("d.md", (a) => {
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a.anchors["a_old"] = { fingerprint: { text: "o", before: "", after: "", lineHint: 0 } };
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a.attributions.push({
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id: "at1", anchorId: "a_old", author: { kind: "human", id: "ben" },
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createdAt: "2026-06-10T00:00:00.000Z", updatedAt: "2026-06-10T00:00:00.000Z",
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});
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});
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store.update("d.md", (a) => {
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a.attributions = [];
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});
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expect(Object.keys(store.load("d.md")!.anchors)).toEqual([]);
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});
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it("consumeSelfWrite counts multiple writes to the same sidecar (double-save suppression)", () => {
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const store = new CoauthorStore(root);
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store.update("d.md", (a) => {
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a.anchors["a_t"] = { fingerprint: { text: "t", before: "", after: "", lineHint: 0 } };
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a.threads.push({ id: "t1", anchorId: "a_t", status: "open", messages: [] });
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});
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store.update("d.md", (a) => {
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a.attributions.push({
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id: "at1", anchorId: "a_t", author: { kind: "human", id: "ben" },
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createdAt: "2026-06-10T00:00:00.000Z", updatedAt: "2026-06-10T00:00:00.000Z",
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});
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});
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const p = store.sidecarPath("d.md");
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expect(store.consumeSelfWrite(p)).toBe(true);
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expect(store.consumeSelfWrite(p)).toBe(true);
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expect(store.consumeSelfWrite(p)).toBe(false);
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});
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});
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