DevOps
Atlantis automates Terraform plan and apply through pull requests. But Atlantis itself needs testing: workflow configuration, plan output validation, policy enforcement, and server health checks. This guide covers testing Atlantis workflows locally with atlantis-local, validating plan outputs with custom scripts, enforcing Terraform policies with OPA and Conftest, and monitoring Atlantis
Testing
SendGrid and AWS SES both offer sandbox modes for testing without sending real emails. Beyond sandbox, you need to test delivery event webhooks (bounce, complaint, open, click) and mock the SDK in unit tests. This guide covers the full testing stack for both providers. What Transactional Email Testing Covers Testing
API Testing
Tyk is an open-source API gateway that manages authentication, rate limiting, analytics, and API versioning through a declarative API definition system. Unlike gateways that use UI-driven configuration, Tyk stores its entire configuration as JSON documents — which means you can version-control it and write automated tests against it. This guide covers
Testing
Software templates and scaffolding tools bootstrap new projects, services, and components. When templates work correctly, developers get a fully wired-up starting point — CI/CD configured, linting set up, tests passing. When templates have bugs, every new project starts with broken infrastructure that nobody notices until it's too late.
Testing
Port.io is an internal developer portal (IDP) platform that lets platform teams model their software catalog, define quality scorecards, and build self-service workflows for developers. When Port is the system of record for your services and infrastructure, testing its configuration becomes as important as testing application code. This guide
API Testing
Okta is the identity layer for many enterprise applications. Testing Okta integrations is challenging because identity flows involve browser redirects, SAML assertions, multi-step authentication, and external callback URLs. But untested auth is the most dangerous untested code — a broken login means no users can access your application. This guide covers
Testing
Internal developer platforms (IDPs) are infrastructure for your engineers. When they break, all development stops. Yet most platform teams define SLOs for their user-facing products while running their own IDPs on vibes and hope. This guide covers how to define meaningful SLOs for developer platforms, test them with chaos experiments,
API Testing
Envoy Proxy powers many service meshes (Istio, AWS App Mesh) and API gateways (Contour, Emissary-Ingress). It's highly capable and highly complex. Testing Envoy configurations before deploying them prevents outages caused by misconfigured filter chains, broken xDS configs, and subtle routing mistakes. This guide covers testing Envoy's
API Testing
AWS Cognito provides user authentication, authorization, and identity management for AWS-hosted applications. Testing Cognito integrations is critical — a misconfigured user pool can lock users out, a broken Lambda trigger can block all signups, and a wrong JWT audience claim can silently reject valid users. This guide covers testing Cognito user
API Testing
An API gateway is one of the most critical components in a modern backend architecture. It handles authentication, rate limiting, routing, request transformation, and more — all before a request reaches your application code. When the gateway misbehaves, everything downstream breaks. Testing it thoroughly is non-negotiable. This guide covers the full
Testing
SPF, DKIM, and DMARC misconfigurations are the most common reason transactional emails land in spam. This guide shows how to validate these DNS records in CI so you catch deliverability regressions before they reach production users. We cover automated DNS checks, DKIM signature verification, and integration with GitHub Actions. Why
AI Testing
Prompts are code. Changing a single word in a system prompt can break a feature that was working fine. Without version control and regression testing for prompts, you're flying blind — every prompt change is a gamble. This guide covers how to version control prompts, run regression evals on