Testing
WebdriverIO ships with Mocha as its default test framework, and the combination is a natural fit. Mocha's describe/it structure keeps tests readable, its hooks give you fine-grained control over setup and teardown, and its async support pairs cleanly with WebdriverIO's promise-based API. This guide covers
Testing
One of WebdriverIO's most powerful capabilities is its integration with Appium for mobile testing. Using the same framework for browser automation and mobile testing means your team shares knowledge, tooling, and even some code across platforms. This guide covers setting up WebdriverIO with Appium to test iOS and
Testing
As WebdriverIO test suites grow, tests that embed raw selectors and action logic directly become a maintenance burden. Change a CSS class, rename a button, or restructure a page — suddenly dozens of tests need updating. The Page Object Model (POM) solves this by creating a layer of abstraction between your
Testing
Testing authenticated APIs is unavoidable in any real project. Most production endpoints require authentication — Basic Auth, Bearer tokens, OAuth2, or API keys. REST Assured provides built-in support for common authentication schemes and the flexibility to handle anything custom. This guide covers the patterns you'll actually use. Basic Authentication
Testing
Running WebdriverIO tests locally is one thing. Getting them to run reliably in CI on every pull request is where the real value is. This guide covers setting up WebdriverIO with GitHub Actions — from the basic configuration to parallel execution, test artifacts, and handling the quirks of headless browser environments.
Testing
E2E testing for GraphQL-powered apps requires different techniques than REST APIs. With REST, you intercept by URL (/api/users). With GraphQL, every query hits the same endpoint (/graphql), so you intercept by operation name or query content. Both Playwright and Cypress support GraphQL intercepting well. This guide shows you how
Testing
Apollo Server's executeOperation is excellent for most GraphQL testing. But sometimes you need to test the full HTTP stack — middleware, authentication headers, CORS, rate limiting, and HTTP error codes. Supertest lets you do that: it sends real HTTP requests against your Express/Fastify application without starting a network
Testing
Apollo Server is the most popular GraphQL server for Node.js. Its testing story is surprisingly good: executeOperation lets you run queries against an in-memory server without HTTP overhead, making integration tests fast and deterministic. This guide focuses on the practical patterns you need for testing Apollo Server 4 applications
Testing
"Should we use Pact or integration tests?" is a question that comes up whenever a team starts decomposing a monolith into services. The honest answer is: it depends on your team structure, deployment cadence, and tolerance for the complexity each approach introduces. This article explains both approaches clearly,
Testing
Local pact files work fine when you have one consumer and one provider. As soon as you have five consumers and ten providers, file-sharing falls apart. You need a central store for pacts and verification results — somewhere all teams can publish to and read from. That's what PactFlow
Testing
Contract testing with Pact shines brightest in Node.js microservice environments. Most Node.js APIs are Express or Fastify apps — they're relatively thin, the test setup is familiar, and pact-js integrates cleanly with Jest. This guide walks through a complete, realistic example from consumer test to provider verification
Testing
Testing GraphQL APIs is fundamentally different from testing REST. With REST, each endpoint has a specific contract. With GraphQL, a single endpoint handles arbitrary queries, and the surface area is determined by your schema. A change to a resolver can affect dozens of queries the client might send. This guide