NodeJS source (edit on github)

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

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

module.exports = {
  patch: async (req) => {
    if (!req.query || !req.query.subscriptionid) {
      throw new Error('invalid-subscriptionid')
    }
    const subscription = await global.api.administrator.subscriptions.Subscription.get(req)
    if (!subscription) {
      throw new Error('invalid-subscriptionid')
    }
    if (!subscription.discount) {
      throw new Error('invalid-subscription')
    }
    const updateInfo = {
      coupon: null
    }
    const subscriptionNow = await stripeCache.execute('subscriptions', 'update', req.query.subscriptionid, updateInfo, req.stripeKey)
    await stripeCache.update(subscriptionNow)
    return subscriptionNow
  }
}

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')
const TestStripeAccounts = require('../../../../../test-stripe-accounts.js')

describe('/api/administrator/subscriptions/reset-subscription-coupon', function () {
  this.timeout(60 * 60 * 1000)
  afterEach(TestHelper.deleteOldWebhooks)
  beforeEach(TestHelper.setupWebhook)
  describe('exceptions', () => {
    describe('invalid-subscriptionid', () => {
      it('missing querystring subscriptionid', async () => {
        const administrator = await TestHelper.createOwner()
        const req = TestHelper.createRequest('/api/administrator/subscriptions/reset-subscription-coupon')
        req.account = administrator.account
        req.session = administrator.session
        let errorMessage
        try {
          await req.patch(req)
        } catch (error) {
          errorMessage = error.message
        }
        assert.strictEqual(errorMessage, 'invalid-subscriptionid')
      })

      it('invalid querystring subscriptionid', async () => {
        const administrator = await TestHelper.createOwner()
        const req = TestHelper.createRequest('/api/administrator/subscriptions/reset-subscription-coupon?subscriptionid=invalid')
        req.account = administrator.account
        req.session = administrator.session
        let errorMessage
        try {
          await req.patch(req)
        } catch (error) {
          errorMessage = error.message
        }
        assert.strictEqual(errorMessage, 'invalid-subscriptionid')
      })
    })

    describe('invalid-subscription', () => {
      it('ineligible querystring subscription has no discount', async () => {
        const administrator = await TestStripeAccounts.createOwnerWithPlan()
        const user = await TestStripeAccounts.createUserWithPaymentMethod()
        await TestHelper.createSubscription(user, administrator.plan.id)
        const req = TestHelper.createRequest(`/api/administrator/subscriptions/reset-subscription-coupon?subscriptionid=${user.subscription.id}`)
        req.account = administrator.account
        req.session = administrator.session
        let errorMessage
        try {
          await req.patch(req)
        } catch (error) {
          errorMessage = error.message
        }
        assert.strictEqual(errorMessage, 'invalid-subscription')
      })
    })
  })

  describe('returns', () => {
    it('object', async () => {
      const administrator = await TestStripeAccounts.createOwnerWithPlan()
      await TestHelper.createCoupon(administrator, {
        published: 'true',
        percent_off: '25',
        duration: 'repeating',
        duration_in_months: '3'
      })
      const user = await TestStripeAccounts.createUserWithPaymentMethod()
      await TestHelper.createSubscription(user, administrator.plan.id)
      await TestHelper.createSubscriptionDiscount(administrator, user.subscription, administrator.coupon)
      const req = TestHelper.createRequest(`/api/administrator/subscriptions/reset-subscription-coupon?subscriptionid=${user.subscription.id}`)
      req.account = administrator.account
      req.session = administrator.session
      req.filename = __filename
      req.saveResponse = true
      const subscriptionNow = await req.patch()
      assert.strictEqual(undefined, subscriptionNow.coupon)
    })
  })
})