Testing Stripe#swap with simulation

[ogirginc]

I am trying to test our Stripe integration. However, when I simulated the change from a free trial to a paid subscription, I got stuck at:

pay/app/models/pay/stripe/subscription.rb

Line 288 in 9de1eb9

trial_end: (on_trial? ? trial_ends_at.to_i : "now"),

As the on_trial? check uses the Time.current to compare, which obviously won't play nice with the Stripe simulation. As a result, we get this error:

The parameter `trial_end` expects a unix timestamp representing a 
date and time in the future. You specified the value `1738495408` 
but have a Test Clock currently frozen to `1739100240`.
---
Time.current #=> 2025-01-03 12:05:00.946629000 UTC +00:00
Time.at(1738495408) #=> 2025-02-02 14:23:28 +0300
Time.at(1739100240) #=> 2025-02-09 14:24:00 +0300

I was able to overcome this in a sense via updating the data through the rails console:

subscription.trial_ends_at = Time.current - 1.day

I wanted to know if anyone has a better way to test so I can put ease on QA team? 😅

[excid3]

You can use the travel_to and other test helpers in Rails to time travel to match the simulation.

[ogirginc]

Turns out, updating the subscription's free trial days to 0 does the trick.