NodeJS source (view on github)

const subscriptions = require('../../../../../index.js')

module.exports = {
  get: async (req) => {
    if (!req.query || !req.query.accountid) {
      throw new Error('invalid-accountid')
    }
    const account = await global.api.user.Account.get(req)
    if (!account) {
      throw new Error('invalid-account')
    }
    return subscriptions.Storage.Customer.count({
      where: {
        accountid: req.query.accountid,
        appid: req.appid || global.appid
      }
    })
  }
}

Test source (view on github)

/* eslint-env mocha */
const assert = require('assert')
const TestHelper = require('../../../../../test-helper.js')

describe('/api/user/subscriptions/customers-count', function () {
  before(TestHelper.disableMetrics)
  after(TestHelper.enableMetrics)
  describe('returns', () => {
    it('integer', async () => {
      const user = await TestHelper.createUser()
      for (let i = 0, len = global.pageSize + 1; i < len; i++) {
        await TestHelper.createCustomer(user, {
          email: user.profile.contactEmail
        })
      }
      const req = TestHelper.createRequest(`/api/user/subscriptions/customers-count?accountid=${user.account.accountid}`)
      req.account = user.account
      req.session = user.session
      req.filename = __filename
      req.saveResponse = true
      const result = await req.get()
      assert.strictEqual(result, global.pageSize + 1)
    })
  })
})