Payment Flow Testing

6 stories in Payment Flow Testing

Owning Session State Across Stripe and Kalshi Auth Flows in Integration Tests

Test stateful APIs by explicitly owning credentials and session state across API boundaries.

Validate bot strategies against Kalshi's stateful fill sequences rather than stateless mocks.

Deliberate failures reveal whether retries and circuit breakers actually protect payment checkout.

Use a stateful simulator alongside PayPal's sandbox for reliable CI testing.

A stateful local simulator tests payment flows without live credentials or network dependencies.

Stripe's test cards let you catch payment failures before customers hit them.