feat(features): contract suites for all repository interfaces

Each repository interface now has a contract suite under
src/__contracts__/. Both Mock and Payload implementations run the
same suite, eliminating mock-vs-real drift. Payload impls back the
contract with an in-memory stub via vi.mock('payload') + a small
buildPayloadStub helper.

Spec: §5.2, §6.4
This commit is contained in:
2026-05-05 15:28:38 +02:00
parent a74f217703
commit e1355e6bc7
17 changed files with 751 additions and 62 deletions

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import { it, expect, beforeEach } from "vitest";
import { defineContractSuite } from "@repo/core-testing/contract";
import type { IArticlesRepository } from "../application/repositories/articles-repository.interface.js";
import { articleFactory } from "../__factories__/article.factory.js";
export const articlesRepositoryContract =
defineContractSuite<IArticlesRepository>(
"IArticlesRepository",
({ buildSubject }) => {
let repo: IArticlesRepository;
beforeEach(async () => {
articleFactory.reset();
repo = await buildSubject();
});
// --- createArticle ---
it("createArticle returns an article with an id and the correct fields", async () => {
const seed = articleFactory.build({ title: "Hello World" });
const created = await repo.createArticle(seed);
// Implementations may assign their own id (e.g. Payload), so we only
// verify the id is a non-empty string and the other fields match.
expect(typeof created.id).toBe("string");
expect(created.id.length).toBeGreaterThan(0);
expect(created.title).toBe("Hello World");
expect(created.slug).toBe(seed.slug);
expect(created.status).toBe(seed.status);
expect(created.authorId).toBe(seed.authorId);
});
// --- getArticle ---
it("createArticle then getArticle returns it by the returned id", async () => {
const seed = articleFactory.build();
const created = await repo.createArticle(seed);
// Use the id returned by createArticle (Payload may differ from seed.id)
const result = await repo.getArticle(created.id);
expect(result).toBeDefined();
expect(result?.id).toBe(created.id);
expect(result?.slug).toBe(seed.slug);
});
it("getArticle returns undefined for missing id", async () => {
expect(await repo.getArticle("does-not-exist")).toBeUndefined();
});
// --- getArticleBySlug ---
it("createArticle then getArticleBySlug returns it by slug", async () => {
const seed = articleFactory.build({ slug: "my-slug" });
const created = await repo.createArticle(seed);
const result = await repo.getArticleBySlug("my-slug");
expect(result).toBeDefined();
expect(result?.id).toBe(created.id);
expect(result?.slug).toBe("my-slug");
});
it("getArticleBySlug returns undefined for missing slug", async () => {
expect(await repo.getArticleBySlug("does-not-exist")).toBeUndefined();
});
// --- getArticles ---
it("getArticles returns empty array when no articles", async () => {
const list = await repo.getArticles();
expect(list).toHaveLength(0);
});
it("getArticles returns all articles when no filter", async () => {
await repo.createArticle(articleFactory.build());
await repo.createArticle(articleFactory.build());
const list = await repo.getArticles();
expect(list).toHaveLength(2);
});
it("getArticles filters by status", async () => {
await repo.createArticle(articleFactory.build({ status: "draft" }));
await repo.createArticle(
articleFactory.build({ status: "published" }),
);
const drafts = await repo.getArticles({ status: "draft" });
expect(drafts).toHaveLength(1);
expect(drafts[0]?.status).toBe("draft");
});
it("getArticles filters by authorId", async () => {
await repo.createArticle(
articleFactory.build({ authorId: "author-a" }),
);
await repo.createArticle(
articleFactory.build({ authorId: "author-b" }),
);
const result = await repo.getArticles({ authorId: "author-a" });
expect(result).toHaveLength(1);
expect(result[0]?.authorId).toBe("author-a");
});
// --- updateArticle ---
it("updateArticle changes fields and returns updated article", async () => {
const seed = articleFactory.build({ status: "draft" });
const created = await repo.createArticle(seed);
// Use the returned id for the update lookup
const updated = await repo.updateArticle(created.id, {
status: "published",
});
expect(updated).toBeDefined();
expect(updated?.id).toBe(created.id);
expect(updated?.status).toBe("published");
});
it("updateArticle returns undefined for missing id", async () => {
const result = await repo.updateArticle("no-such-id", {
title: "new",
});
expect(result).toBeUndefined();
});
},
);

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import { describe } from "vitest";
import { MockArticlesRepository } from "@/infrastructure/repositories/mock-articles.repository";
import { articlesRepositoryContract } from "@/__contracts__/articles-repository.contract";
describe("MockArticlesRepository", () => {
articlesRepositoryContract.run(() => new MockArticlesRepository());
});

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import { describe, expect, it, vi } from "vitest";
import { PayloadArticlesRepository } from "./payload-articles.repository";
import { describe, expect, it, vi, beforeEach } from "vitest";
import { PayloadArticlesRepository } from "@/infrastructure/repositories/payload-articles.repository";
import { articlesRepositoryContract } from "@/__contracts__/articles-repository.contract";
import { stubPayloadConfig } from "@repo/core-testing/payload/stub-config";
// ---------------------------------------------------------------------------
// In-memory Payload stub used by both the contract suite and impl-specific tests
// ---------------------------------------------------------------------------
function buildPayloadStub() {
const store = new Map<string, Record<string, unknown>>();
return {
create: vi.fn(
async ({
data,
}: {
collection: string;
data: Record<string, unknown>;
overrideAccess?: boolean;
}) => {
// Payload assigns an id; here we require the data to carry one
// (the repository passes `id` via the mapped domain object implicitly
// through the Article — we expose the mapped doc back from createArticle).
// The stub returns the data as-is so the mapDoc function can work.
const doc = { id: `stub-${store.size + 1}`, ...data };
store.set(String(doc.id), doc);
return doc;
},
),
find: vi.fn(
async ({
where,
limit,
}: {
collection: string;
where?: {
slug?: { equals: string };
status?: { equals: string };
author?: { equals: string };
};
limit?: number;
page?: number;
overrideAccess?: boolean;
}) => {
let docs = Array.from(store.values());
if (where?.slug) {
docs = docs.filter((d) => d.slug === where.slug?.equals);
}
if (where?.status) {
docs = docs.filter((d) => d.status === where.status?.equals);
}
if (where?.author) {
docs = docs.filter((d) => d.author === where.author?.equals);
}
if (limit !== undefined) {
docs = docs.slice(0, limit);
}
return { docs };
},
),
findByID: vi.fn(
async ({ id }: { collection: string; id: string; overrideAccess?: boolean }) => {
const doc = store.get(String(id));
if (!doc) throw new Error(`Not found: ${id}`);
return doc;
},
),
update: vi.fn(
async ({
id,
data,
}: {
collection: string;
id: string;
data: Record<string, unknown>;
overrideAccess?: boolean;
}) => {
const existing = store.get(String(id));
if (!existing) throw new Error(`Not found: ${id}`);
const updated = { ...existing, ...data };
store.set(String(id), updated);
return updated;
},
),
};
}
vi.mock("payload", () => ({
getPayload: vi.fn(),
}));
// ---------------------------------------------------------------------------
// Contract suite
// ---------------------------------------------------------------------------
describe("PayloadArticlesRepository", () => {
const mockConfig = {} as never;
it("maps a Payload doc to a domain Article on getArticleBySlug", async () => {
const { getPayload } = await import("payload");
const findMock = vi.fn().mockResolvedValue({
docs: [
{
id: "p-123",
title: "Hello",
slug: "hello",
content: { type: "doc", children: [] },
status: "published",
author: "u1",
createdAt: "2026-05-04T12:00:00.000Z",
updatedAt: "2026-05-04T12:00:00.000Z",
},
],
describe("contract", () => {
articlesRepositoryContract.run(async () => {
const stub = buildPayloadStub();
const { getPayload } = await import("payload");
(getPayload as ReturnType<typeof vi.fn>).mockResolvedValue(stub);
return new PayloadArticlesRepository(stubPayloadConfig);
});
(getPayload as ReturnType<typeof vi.fn>).mockResolvedValue({
find: findMock,
});
const repo = new PayloadArticlesRepository(mockConfig);
const result = await repo.getArticleBySlug("hello");
expect(findMock).toHaveBeenCalledWith({
collection: "articles",
where: { slug: { equals: "hello" } },
limit: 1,
overrideAccess: true,
});
expect(result?.id).toBe("p-123");
expect(result?.slug).toBe("hello");
expect(result?.status).toBe("published");
expect(result?.authorId).toBe("u1");
expect(result?.createdAt).toBeInstanceOf(Date);
});
it("returns undefined when slug is not found", async () => {
const { getPayload } = await import("payload");
(getPayload as ReturnType<typeof vi.fn>).mockResolvedValue({
find: vi.fn().mockResolvedValue({ docs: [] }),
// -------------------------------------------------------------------------
// Impl-specific tests: Payload doc → domain mapping
// -------------------------------------------------------------------------
describe("Payload doc → domain mapping", () => {
const mockConfig = {} as never;
beforeEach(() => {
vi.clearAllMocks();
});
const repo = new PayloadArticlesRepository(mockConfig);
const result = await repo.getArticleBySlug("missing");
expect(result).toBeUndefined();
it("maps a Payload doc to a domain Article on getArticleBySlug", async () => {
const { getPayload } = await import("payload");
const findMock = vi.fn().mockResolvedValue({
docs: [
{
id: "p-123",
title: "Hello",
slug: "hello",
content: { type: "doc", children: [] },
status: "published",
author: "u1",
createdAt: "2026-05-04T12:00:00.000Z",
updatedAt: "2026-05-04T12:00:00.000Z",
},
],
});
(getPayload as ReturnType<typeof vi.fn>).mockResolvedValue({
find: findMock,
});
const repo = new PayloadArticlesRepository(mockConfig);
const result = await repo.getArticleBySlug("hello");
expect(findMock).toHaveBeenCalledWith({
collection: "articles",
where: { slug: { equals: "hello" } },
limit: 1,
overrideAccess: true,
});
expect(result?.id).toBe("p-123");
expect(result?.slug).toBe("hello");
expect(result?.status).toBe("published");
expect(result?.authorId).toBe("u1");
expect(result?.createdAt).toBeInstanceOf(Date);
});
it("returns undefined when slug is not found", async () => {
const { getPayload } = await import("payload");
(getPayload as ReturnType<typeof vi.fn>).mockResolvedValue({
find: vi.fn().mockResolvedValue({ docs: [] }),
});
const repo = new PayloadArticlesRepository(mockConfig);
const result = await repo.getArticleBySlug("missing");
expect(result).toBeUndefined();
});
});
});