StellarSplit/backend/src/tests/payment-integration.test.ts at main · ghzhost/StellarSplit · GitHub

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/**
 * Payment Integration Tests
 * These tests demonstrate the payment processing flow
 */

import { Test, TestingModule } from "@nestjs/testing";
import { Repository } from "typeorm";
import { DataSource } from "typeorm";
import { getRepositoryToken } from "@nestjs/typeorm";
import { StellarService } from "../stellar/stellar.service";
import { PaymentProcessorService } from "../payments/payment-processor.service";
import { PaymentGateway } from "../websocket/payment.gateway";
import { EventsGateway } from "../gateway/events.gateway";
import { Payment } from "../entities/payment.entity";
import { Participant } from "../entities/participant.entity";
import { Split } from "../entities/split.entity";
import { EmailService } from "../email/email.service";
import { MultiCurrencyService } from "../multi-currency/multi-currency.service";
import { AnalyticsService } from "../analytics/analytics.service";

describe("Payment Integration Tests", () => {
  let service: PaymentProcessorService;
  let stellarService: StellarService;
  let paymentGateway: PaymentGateway;

  beforeEach(async () => {
    const module: TestingModule = await Test.createTestingModule({
      providers: [
        PaymentProcessorService,
        {
          provide: StellarService,
          useValue: {
            verifyTransaction: jest.fn(),
          },
        },
        {
          provide: PaymentGateway,
          useValue: {
            emitPaymentNotification: jest.fn(),
            emitSplitCompletion: jest.fn(),
          },
        },
        {
          provide: EventsGateway,
          useValue: {
            emitPaymentReceived: jest.fn(),
            emitSplitUpdated: jest.fn(),
            emitParticipantJoined: jest.fn(),
          },
        },
        {
          provide: getRepositoryToken(Payment),
          useClass: Repository,
        },
        {
          provide: getRepositoryToken(Participant),
          useClass: Repository,
        },
        {
          provide: getRepositoryToken(Split),
          useClass: Repository,
        },
        {
          provide: EmailService,
          useValue: {
            sendPaymentConfirmation: jest.fn(),
            sendSplitCompletedNotification: jest.fn(),
          },
        },
        {
          provide: MultiCurrencyService,
          useValue: {
            processMultiCurrencyPayment: jest.fn(),
          },
        },
        {
          provide: AnalyticsService,
          useValue: {
            trackPaymentProcessed: jest.fn(),
          },
        },
        {
          provide: DataSource,
          useValue: {
            createQueryRunner: jest.fn().mockReturnValue({
              connect: jest.fn().mockResolvedValue(undefined),
              startTransaction: jest.fn().mockResolvedValue(undefined),
              rollbackTransaction: jest.fn().mockResolvedValue(undefined),
              commitTransaction: jest.fn().mockResolvedValue(undefined),
              release: jest.fn().mockResolvedValue(undefined),
              manager: {
                findOne: jest.fn().mockResolvedValue(null),
                save: jest.fn().mockResolvedValue(null),
              },
            }),
          },
        },
      ],
    }).compile();

    service = module.get<PaymentProcessorService>(PaymentProcessorService);
    stellarService = module.get<StellarService>(StellarService);
    paymentGateway = module.get<PaymentGateway>(PaymentGateway);
  });

  it("should process a complete payment", async () => {
    // Mock the Stellar service to return a valid transaction
    jest.spyOn(stellarService, "verifyTransaction").mockResolvedValue({
      valid: true,
      amount: 50.0,
      asset: "XLM-USDC",
      sender: "GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN",
      receiver: "GBRPYHIL2CI3FNQ4BXLFMNDLFJUNPU2HY3ZMFSHONUCEOASW7QC7OX2H",
      timestamp: "2023-01-01T00:00:00Z",
    });

    // In a real test, we would mock repository methods and test the full flow
    expect(service).toBeDefined();
  });

  it("should handle partial payments", async () => {
    // Mock a transaction with amount less than owed
    jest.spyOn(stellarService, "verifyTransaction").mockResolvedValue({
      valid: true,
      amount: 25.0, // Less than owed amount
      asset: "XLM-USDC",
      sender: "GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN",
      receiver: "GBRPYHIL2CI3FNQ4BXLFMNDLFJUNPU2HY3ZMFSHONUCEOASW7QC7OX2H",
      timestamp: "2023-01-01T00:00:00Z",
    });

    expect(service).toBeDefined();
  });

  it("should reject invalid transactions", async () => {
    // Mock an invalid transaction
    jest.spyOn(stellarService, "verifyTransaction").mockResolvedValue({
      valid: false,
      amount: 0,
      asset: "",
      sender: "",
      receiver: "",
      timestamp: "2023-01-01T00:00:00Z",
    });

    expect(service).toBeDefined();
  });

  it("should prevent duplicate transactions", async () => {
    // This test would verify that the service prevents duplicate submissions
    expect(service).toBeDefined();
  });
});