How to test periodic automatic payment in Stripe

How to create a subscription for example for 7 months? If I understand correctly, the subscription is created and just paid until you stop.

private Plan createStripePlan(String interval, String stripePlanID, Long amount, User user) { Stripe.apiKey = this.secretKey; Map<String, Object> params = new HashMap<>(); params.put("currency", "eur"); params.put("interval", "day"); params.put("product", stripePlanID); params.put("nickname", user.getEmail()); params.put("amount", amount); try { return Plan.create(params); } catch (AuthenticationException e) { e.printStackTrace(); } catch (InvalidRequestException e) { e.printStackTrace(); } catch (APIConnectionException e) { e.printStackTrace(); } catch (CardException e) { e.printStackTrace(); } catch (APIException e) { e.printStackTrace(); } return null; } private Subscription createSubscription(String planID, String customerID, Integer months) { Stripe.apiKey = this.secretKey; Map<String, Object> item = new HashMap<>(); item.put("plan", planID); Map<String, Object> items = new HashMap<>(); items.put("0", item); Map<String, Object> params = new HashMap<>(); params.put("customer", customerID); params.put("billing", "charge_automatically"); params.put("items", items); try { return Subscription.create(params); } catch (AuthenticationException e) { e.printStackTrace(); } catch (InvalidRequestException e) { e.printStackTrace(); } catch (APIConnectionException e) { e.printStackTrace(); } catch (CardException e) { e.printStackTrace(); } catch (APIException e) { e.printStackTrace(); } return null; 

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