invitations.controller.spec.ts

import { Test, TestingModule } from "@nestjs/testing";
import { HttpStatus } from "@nestjs/common";
import { InvitationsController } from "./invitations.controller";
import { InvitationsService } from "./invitations.service";
import { AuthorizationService } from "../auth/services/authorization.service";
import { AuthorizationGuard } from "../auth/guards/authorization.guard";
import { JwtAuthGuard } from "../auth/guards/jwt-auth.guard";
import { ReceiptPolicyService } from "../receipts/receipt-policy.service";
import { Invitation } from "./invitation.entity";
import { CreateInvitationDto } from "./dto/create-invitation.dto";
import { JoinInvitationDto } from "./dto/join-invitation.dto";

describe("InvitationsController", () => {
  let controller: InvitationsController;
  let service: InvitationsService;

  const splitId = "550e8400-e29b-41d4-a716-446655440000";
  const validToken = "a1b2c3d4-e5f6-7890-abcd-ef1234567890";
  const mockInvitationEntity: Invitation = {
    id: "inv-uuid",
    token: validToken,
    splitId,
    expiresAt: new Date(Date.now() + 86400000),
    usedAt: null,
    createdAt: new Date(),
  } as Invitation;

  const mockInvitationWithLink = {
    ...mockInvitationEntity,
    link: `http://localhost:3000/invite/join/${validToken}`,
  };
  const mockJoinResult = {
    participant: {
      id: "part-uuid",
      splitId,
      userId: "alice@example.com",
      amountOwed: 0,
      status: "pending",
    },
    split: { id: splitId, status: "active" },
  };

  const mockInvitationsService = {
    create: jest.fn().mockResolvedValue(mockInvitationWithLink),
    getByToken: jest.fn().mockResolvedValue(mockInvitationEntity),
    joinByToken: jest.fn().mockResolvedValue(mockJoinResult),
  };

  beforeEach(async () => {
    jest.clearAllMocks();
    mockInvitationsService.create.mockResolvedValue(mockInvitationWithLink);
    mockInvitationsService.getByToken.mockResolvedValue(mockInvitationEntity);
    mockInvitationsService.joinByToken.mockResolvedValue(mockJoinResult);

    const module: TestingModule = await Test.createTestingModule({
      controllers: [InvitationsController],
      providers: [
        {
          provide: InvitationsService,
          useValue: mockInvitationsService,
        },
        {
          provide: AuthorizationService,
          useValue: {
            canAccessSplit: jest.fn().mockResolvedValue(true),
            canCreatePayment: jest.fn().mockResolvedValue(true),
            canAddParticipant: jest.fn().mockResolvedValue(true),
            canRemoveParticipant: jest.fn().mockResolvedValue(true),
            canCreatePaymentForParticipant: jest.fn().mockResolvedValue(true),
            canAccessParticipantPayments: jest.fn().mockResolvedValue(true),
            canAccessReceipt: jest.fn().mockResolvedValue(true),
            canAccessDispute: jest.fn().mockResolvedValue(true),
            isAdmin: jest.fn().mockResolvedValue(false),
            canAccessGroup: jest.fn().mockResolvedValue(true),
            canManageGroupMembers: jest.fn().mockResolvedValue(true),
            canCreateGroupSplit: jest.fn().mockResolvedValue(true),
            filterAccessibleSplits: jest.fn().mockResolvedValue([]),
          },
        },
        {
          provide: ReceiptPolicyService,
          useValue: {
            canCreateReceipt: jest.fn().mockResolvedValue(true),
            canAccessReceipt: jest.fn().mockResolvedValue(true),
            canDeleteReceipt: jest.fn().mockResolvedValue(true),
          },
        },
      ],
    })
      .overrideGuard(JwtAuthGuard).useValue({ canActivate: () => true })
      .overrideGuard(AuthorizationGuard).useValue({ canActivate: () => true })
      .compile();

    controller = module.get<InvitationsController>(InvitationsController);
    service = module.get<InvitationsService>(InvitationsService);
  });

  it("should be defined", () => {
    expect(controller).toBeDefined();
  });

  describe("create", () => {
    it("should create invite and return link", async () => {
      const dto: CreateInvitationDto = { splitId };
      const result = await controller.create(dto);
      expect(result).toEqual(mockInvitationWithLink);
      expect(service.create).toHaveBeenCalledWith(dto);
    });
  });

  describe("getByToken", () => {
    it("should return invite for valid token", async () => {
      const result = await controller.getByToken(validToken);
      expect(result).toEqual(mockInvitationEntity);
      expect(service.getByToken).toHaveBeenCalledWith(validToken);
    });

    it("should throw 410 when service throws Gone", async () => {
      mockInvitationsService.getByToken.mockRejectedValue({
        status: HttpStatus.GONE,
        message: "This invitation has expired",
      });
      await expect(controller.getByToken(validToken)).rejects.toMatchObject({
        status: HttpStatus.GONE,
      });
    });
  });

  describe("join", () => {
    it("should join via token and return participant and split", async () => {
      const dto: JoinInvitationDto = { email: "alice@example.com" };
      const result = await controller.join(validToken, dto);
      expect(result).toEqual(mockJoinResult);
      expect(service.joinByToken).toHaveBeenCalledWith(validToken, dto);
    });
  });
});