Inject intentional delays and transient failures into staging environments to ensure your frontend displays actionable guidance when carriers experience outages.
How does your frontend UI react when a carrier experiences a 45-second delivery delay? Do users repeatedly hammer the 'Resend Code' button, exhausting rate limits and inflating your monthly telephony bill? Chaos testing verifies that your application degrades gracefully.
1 Chaos Test Scenarios for Verification Flows
1. 30-Second Latency Spike: Ensure frontend progress indicators reassure the user without prematurely enabling the resend trigger.
2. Carrier 503 Outage: Verify that the multi-carrier failover circuit breaker activates and switches to secondary routes.
3. Undeliverable DLR Return: Verify that invalid number messages display clear inline error messaging instead of infinite spinning loaders.
Frequently Asked Questions • QA Automation & Testing
Toxiproxy and SMSRiver's synthetic event API allow configuring artificial latency spikes, packet drops, and bandwidth throttling on test webhooks.