'use strict';

const { describe, it } = require('node:test');
const assert = require('node:assert/strict');
const paymentService = require('./paymentService');

describe('Bulk Payment and Duplicate Check Service', () => {
  it('exports createBulkClassPayments and checkDuplicatePayment', () => {
    assert.equal(typeof paymentService.createBulkClassPayments, 'function');
    assert.equal(typeof paymentService.checkDuplicatePayment, 'function');
  });

  it('checkDuplicatePayment returns false when userId is not provided', async () => {
    const result = await paymentService.checkDuplicatePayment({});
    assert.deepEqual(result, {
      hasDuplicate: false,
      count: 0,
      payments: []
    });
  });

  it('createBulkClassPayments throws error when classId is missing', async () => {
    await assert.rejects(
      async () => {
        await paymentService.createBulkClassPayments({});
      },
      (err) => {
        assert.equal(err.errorCode, 'VALIDATION_FAILED');
        return true;
      }
    );
  });
});