NodeJS source (edit on github)

If you see a problem with the source submit a pull request on Github.

const subscriptions = require('../../../../../index.js')
const stripeCache = require('../../../../stripe-cache.js')

module.exports = {
  get: async (req) => {
    if (!req.query || !req.query.customerid) {
      throw new Error('invalid-customerid')
    }
    const exists = await subscriptions.StorageList.exists(`${req.appid}/customers`, req.query.customerid)
    if (!exists) {
      throw new Error('invalid-customerid')
    }
    const owned = await subscriptions.StorageList.exists(`${req.appid}/account/customers/${req.account.accountid}`, req.query.customerid)
    if (!owned) {
      throw new Error('invalid-account')
    }
    const customer = await stripeCache.retrieve(req.query.customerid, 'customers', req.stripeKey)
    if (!customer) {
      throw new Error('invalid-customerid')
    }
    if (customer.metadata.accountid !== req.account.accountid) {
      throw new Error('invalid-account')
    }
    return customer
  }
}

Test source (edit on github)

Tests perform real HTTP requests against a running Dashboard server.

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

describe('/api/user/subscriptions/customer', () => {
  describe('exceptions', () => {
    describe('invalid-customerid', () => {
      it('missing querystring customerid', async () => {
        const user = await TestHelper.createUser()
        const req = TestHelper.createRequest('/api/user/subscriptions/customer')
        req.account = user.account
        req.session = user.session
        let errorMessage
        try {
          await req.get()
        } catch (error) {
          errorMessage = error.message
        }
        assert.strictEqual(errorMessage, 'invalid-customerid')
      })

      it('invalid querystring customerid', async () => {
        const user = await TestHelper.createUser()
        const req = TestHelper.createRequest('/api/user/subscriptions/customer?customerid=invalid')
        req.account = user.account
        req.session = user.session
        let errorMessage
        try {
          await req.get()
        } catch (error) {
          errorMessage = error.message
        }
        assert.strictEqual(errorMessage, 'invalid-customerid')
      })
    })

    describe('invalid-account', () => {
      it('ineligible accessing account', async () => {
        const user = await TestStripeAccounts.createUserWithPaymentMethod()
        const user2 = await TestHelper.createUser()
        const req = TestHelper.createRequest(`/api/user/subscriptions/customer?customerid=${user.customer.id}`)
        req.account = user2.account
        req.session = user2.session
        let errorMessage
        try {
          await req.get()
        } catch (error) {
          errorMessage = error.message
        }
        assert.strictEqual(errorMessage, 'invalid-account')
      })
    })
  })

  describe('returns', () => {
    it('object', async () => {
      const user = await TestStripeAccounts.createUserWithPaymentMethod()
      const req = TestHelper.createRequest(`/api/user/subscriptions/customer?customerid=${user.customer.id}`)
      req.account = user.account
      req.session = user.session
      req.filename = __filename
      req.saveResponse = true
      const customer = await req.get()
      assert.strictEqual(customer.id, user.customer.id)
    })
  })
})