Monorepo
As a monorepo grows, test code starts to duplicate. Every package writes its own createUser() factory, defines its own API mock handlers, and copies the same Jest setup file. A change to the User type means updating factories in five packages. A new API endpoint means updating mocks scattered across
Monorepo
Nx is one of the most popular monorepo build systems for JavaScript and TypeScript projects. Its key promise for testing is simple: only run tests for code that actually changed. When a monorepo contains dozens of applications and libraries, that promise can cut CI time from 45 minutes to under
Monorepo
Bazel is Google's open-source build system, designed from the ground up for very large monorepos. It powers testing at companies where a single repository contains millions of lines of code across dozens of languages. Its approach to testing is fundamentally different from other tools: Bazel treats tests as
Monorepo
The most common CI problem in monorepos is running too many tests on every commit. A change to a CSS file triggers a full backend test suite. An API schema update re-runs E2E tests for three unrelated apps. Over time, CI becomes a 45-minute wall that developers learn to ignore.
QA Career
QA engineering interviews test both technical knowledge and practical judgment. This guide covers the questions you're most likely to encounter, with answers that go beyond surface-level definitions. Fundamentals 1. What is the difference between testing and debugging? Testing is the process of finding defects — executing software with the
QA Career
The QA engineering career has more defined progression levels than many people realize when they enter the field. Understanding what distinguishes each level helps you set realistic goals and know what to develop next. The Career Ladder Level Typical Years Experience Focus Junior QA Engineer 0–2 years Execution, learning
QA Career
Compensation for QA engineers varies widely — sometimes a 2x or 3x difference between similar roles based on company type, location, and specialization. This guide provides concrete salary data and the factors that drive the largest compensation differences. Note: All figures are estimates based on publicly available data from Glassdoor, Levels.
QA Career
The ISTQB Certified Tester Foundation Level (CTFL) is the most widely recognized entry-level testing certification in the world. Over 1.2 million exams have been taken globally. But is it worth pursuing in 2025? And if you decide to go for it, how do you actually pass? This guide covers
QA Career
Quality assurance engineering is one of the most accessible entry points into tech. You don't need a computer science degree, and many QA engineers come from completely unrelated backgrounds. But the path is more specific than "just learn to test." This guide maps the realistic journey.
Testing
Ansible playbooks are often "tested" by running them against production and hoping. Molecule changes that — it provides a framework for testing roles and playbooks in isolated containers or VMs, verifying your automation actually works before it touches real infrastructure. What Is Molecule? Molecule is the official testing framework
Testing
Infrastructure-as-Code introduced a new class of bug: the infrastructure configuration error. A missing variable, a wrong CIDR block, or an IAM permission misconfiguration can take down a service just as effectively as a software bug. Testing your Terraform code prevents these failures. This guide covers the full Terraform testing stack:
Testing
Policy-as-code turns compliance requirements into machine-checkable rules. Instead of "all S3 buckets must have versioning enabled" living only in a wiki, it lives in code that runs in your CI pipeline and blocks non-compliant deployments automatically. Open Policy Agent (OPA) is the most widely adopted policy-as-code engine. conftest