So, in this article, I will be showing you how you can test payment gateways in your Flutter app without spending a single rupee — or dollar, or euro. Payment testing is the most anxiety-inducing part of building a checkout, and it should not be: every serious gateway ships a sandbox, and every ...
Source: [Dev.to](https://dev.to/mryadavgulshan/testing-payment-gateways-in-flutter-without-real-money-jm)