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import { describe, expect, it, vi } from "vitest";
import type { Deck, DeckRepository } from "./types.js";
function createMockDeck(overrides: Partial<Deck> = {}): Deck {
return {
id: "deck-uuid-123",
userId: "user-uuid-123",
name: "Test Deck",
description: null,
newCardsPerDay: 20,
createdAt: new Date("2024-01-01"),
updatedAt: new Date("2024-01-01"),
deletedAt: null,
syncVersion: 0,
...overrides,
};
}
function createMockDeckRepo(): DeckRepository {
return {
findByUserId: vi.fn(),
findById: vi.fn(),
create: vi.fn(),
update: vi.fn(),
softDelete: vi.fn(),
};
}
describe("DeckRepository mock factory", () => {
describe("createMockDeck", () => {
it("creates a valid Deck with defaults", () => {
const deck = createMockDeck();
expect(deck.id).toBe("deck-uuid-123");
expect(deck.userId).toBe("user-uuid-123");
expect(deck.name).toBe("Test Deck");
expect(deck.description).toBeNull();
expect(deck.newCardsPerDay).toBe(20);
expect(deck.deletedAt).toBeNull();
expect(deck.syncVersion).toBe(0);
});
it("allows overriding properties", () => {
const deck = createMockDeck({
id: "custom-id",
name: "Custom Deck",
description: "A description",
newCardsPerDay: 50,
});
expect(deck.id).toBe("custom-id");
expect(deck.name).toBe("Custom Deck");
expect(deck.description).toBe("A description");
expect(deck.newCardsPerDay).toBe(50);
});
});
describe("createMockDeckRepo", () => {
it("creates a repository with all required methods", () => {
const repo = createMockDeckRepo();
expect(repo.findByUserId).toBeDefined();
expect(repo.findById).toBeDefined();
expect(repo.create).toBeDefined();
expect(repo.update).toBeDefined();
expect(repo.softDelete).toBeDefined();
});
it("methods are mockable for findByUserId", async () => {
const repo = createMockDeckRepo();
const mockDecks = [
createMockDeck({ id: "deck-1" }),
createMockDeck({ id: "deck-2" }),
];
vi.mocked(repo.findByUserId).mockResolvedValue(mockDecks);
const results = await repo.findByUserId("user-123");
expect(results).toHaveLength(2);
expect(repo.findByUserId).toHaveBeenCalledWith("user-123");
});
it("methods are mockable for findById", async () => {
const repo = createMockDeckRepo();
const mockDeck = createMockDeck();
vi.mocked(repo.findById).mockResolvedValue(mockDeck);
const found = await repo.findById("deck-id", "user-id");
expect(found).toEqual(mockDeck);
expect(repo.findById).toHaveBeenCalledWith("deck-id", "user-id");
});
it("returns undefined when deck not found", async () => {
const repo = createMockDeckRepo();
vi.mocked(repo.findById).mockResolvedValue(undefined);
expect(await repo.findById("nonexistent", "user-id")).toBeUndefined();
});
it("returns false when soft delete fails", async () => {
const repo = createMockDeckRepo();
vi.mocked(repo.softDelete).mockResolvedValue(false);
expect(await repo.softDelete("nonexistent", "user-id")).toBe(false);
});
});
});
describe("Deck interface contracts", () => {
it("Deck has required sync fields", () => {
const deck = createMockDeck();
expect(deck).toHaveProperty("syncVersion");
expect(deck).toHaveProperty("createdAt");
expect(deck).toHaveProperty("updatedAt");
expect(deck).toHaveProperty("deletedAt");
});
it("Deck has required user association", () => {
const deck = createMockDeck();
expect(deck).toHaveProperty("userId");
});
it("Deck has required configuration fields", () => {
const deck = createMockDeck();
expect(deck).toHaveProperty("name");
expect(deck).toHaveProperty("description");
expect(deck).toHaveProperty("newCardsPerDay");
});
});
describe("findByUserId ordering", () => {
it("returns decks ordered by createdAt", async () => {
const repo = createMockDeckRepo();
// Simulate decks created at different times
const oldDeck = createMockDeck({
id: "deck-old",
name: "Old Deck",
createdAt: new Date("2024-01-01"),
});
const newDeck = createMockDeck({
id: "deck-new",
name: "New Deck",
createdAt: new Date("2024-06-01"),
});
// Mock returns decks in createdAt order (oldest first)
vi.mocked(repo.findByUserId).mockResolvedValue([oldDeck, newDeck]);
const results = await repo.findByUserId("user-123");
expect(results).toHaveLength(2);
expect(results[0]?.id).toBe("deck-old");
expect(results[1]?.id).toBe("deck-new");
// Verify the order is by createdAt
expect(results[0]?.createdAt.getTime()).toBeLessThan(
results[1]?.createdAt.getTime() ?? 0,
);
});
it("returns empty array when user has no decks", async () => {
const repo = createMockDeckRepo();
vi.mocked(repo.findByUserId).mockResolvedValue([]);
const results = await repo.findByUserId("user-with-no-decks");
expect(results).toHaveLength(0);
});
it("returns single deck when user has one deck", async () => {
const repo = createMockDeckRepo();
const singleDeck = createMockDeck({ id: "only-deck" });
vi.mocked(repo.findByUserId).mockResolvedValue([singleDeck]);
const results = await repo.findByUserId("user-123");
expect(results).toHaveLength(1);
expect(results[0]?.id).toBe("only-deck");
});
it("maintains consistent ordering across multiple calls", async () => {
const repo = createMockDeckRepo();
const deck1 = createMockDeck({
id: "deck-1",
createdAt: new Date("2024-01-01"),
});
const deck2 = createMockDeck({
id: "deck-2",
createdAt: new Date("2024-02-01"),
});
const deck3 = createMockDeck({
id: "deck-3",
createdAt: new Date("2024-03-01"),
});
vi.mocked(repo.findByUserId).mockResolvedValue([deck1, deck2, deck3]);
const results1 = await repo.findByUserId("user-123");
const results2 = await repo.findByUserId("user-123");
// Order should be consistent
expect(results1.map((d) => d.id)).toEqual(results2.map((d) => d.id));
expect(results1.map((d) => d.id)).toEqual(["deck-1", "deck-2", "deck-3"]);
});
});
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