Use Case: Simulating a Payment Gateway Timeout with Playwright

Problem

During testing, the payment flow needed to be validated for failure scenarios like gateway timeout. But the actual payment service was managed by a third-party provider, and modifying or slowing it down for testing was not possible due to compliance and contractual restrictions.

Challenge

Couldn’t directly trigger timeouts in the real payment system.

Needed to ensure the application displayed the correct error messages, handled retries, and logged the failure properly.

Manually waiting for rare real-time outages was not practical.

Solution (with Playwright)

Using Playwright’s network mocking capability, the payment API call was intercepted and programmed to:

Simulate a 408 timeout response.

Delay the response beyond the configured threshold.

Return a controlled failure payload for consistency across tests.

This way, the timeout scenario could be reproduced on-demand without touching the live payment gateway.

Outcome

Application’s error handling and retry logic were successfully validated.

Saved significant time by avoiding dependency on external payment provider outages.

Enabled QA team to cover edge cases that are critical for user trust and compliance.

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