feat: add tbank tokens

src/tbank/tbank-connection.service.spec.ts

@@ -0,0 +1,45 @@
+import { BadRequestException } from '@nestjs/common';
+
+jest.mock('../prisma/prisma.service', () => ({
+  PrismaService: class PrismaService {},
+}));
+
+import { TbankConnectionService } from './tbank-connection.service';
+
+describe('TbankConnectionService', () => {
+  const prisma = {
+    tbankConnection: {
+      findUnique: jest.fn(),
+      upsert: jest.fn(),
+      deleteMany: jest.fn(),
+    },
+  };
+  const config = {
+    getOrThrow: jest.fn(() => 'MDEyMzQ1Njc4OWFiY2RlZjAxMjM0NTY3ODlhYmNkZWY='),
+  };
+  const tbank = { validateToken: jest.fn() };
+  const service = new TbankConnectionService(
+    prisma as never,
+    config as never,
+    tbank,
+  );
+
+  beforeEach(() => jest.clearAllMocks());
+
+  it('does not persist an invalid token', async () => {
+    tbank.validateToken.mockRejectedValue(new Error('INVALID_TBANK_TOKEN'));
+
+    await expect(service.put('user-1', ' token ')).rejects.toEqual(
+      expect.any(BadRequestException),
+    );
+    expect(prisma.tbankConnection.upsert).not.toHaveBeenCalled();
+  });
+
+  it('deletes a connection idempotently', async () => {
+    await service.delete('user-1');
+
+    expect(prisma.tbankConnection.deleteMany).toHaveBeenCalledWith({
+      where: { userId: 'user-1' },
+    });
+  });
+});