Marek Kaszewski
Founder, APIpact
Marek is the founder of APIpact, an API quality platform built for headless commerce teams.
APIpact grew out of a recurring problem: APIs that pass every contract test and still ship broken content to storefronts, apps and partners. Marek writes here about the practical side of API quality: baselines and regression testing, testing inside private networks, managing e-commerce test data, and wiring all of it into CI/CD.
Articles by Marek
When QA Can't Be Linear: Testing Across the Deployment, Not After It
Linear QA assumes you know the expected result. For CMS-driven systems you don't. Here is the two-phase, before-and-after approach I used to test the untestable.
· 10 min read
Catching Breaking API Changes in CI/CD - Before Your Customers Do
API testing in CI/CD that catches breaking changes: wire regression checks into GitHub Actions or any pipeline and fail the build on critical changes.
· 9 min read
API Testing Behind the Firewall: How Remote Executors Work
How to test APIs behind a firewall from a SaaS platform: remote executors use outbound-only HTTPS, so there are no inbound rules, open ports or VPNs.
· 9 min read
API Regression Testing: What Content Regression Testing Catches That Contract Tests Miss
API regression testing beyond contract tests: how content regression testing catches the silent data changes that break storefronts and apps.
· 8 min read
Test Data Management for E-commerce QA: Cards, Customers, Addresses, and OTP
Most e-commerce test failures are test data failures. How to manage payment test cards, customers with real inboxes, international addresses and OTP.
· 9 min read
GraphQL Regression Testing: Why It's Harder Than REST, and How to Do It Anyway
GraphQL has one endpoint and infinite responses, which makes regression testing tricky. A guide to snapshot-based regression testing for GraphQL.
· 8 min read