karatelabs/karate
Karate
Karate is a Gherkin API testing framework and JVM test orchestrator designed for API validation, workflow automation, and browser automation. It provides a unified environment for executing scriptable logic on the Java Virtual Machine with thread-safe concurrent processing.
The project includes a built-in HTTP mock server to simulate backend API behavior by delivering dynamic responses to intercepted requests. It also features a visual regression testing tool that detects interface changes by comparing screenshots against baseline images using pixel-matching analysis.
The system supports API load testing by scaling functional tests into performance tests to identify system bottlenecks. Additional capabilities include end-to-end UI testing through browser interaction automation and data structure validation for JSON and XML responses.
Features
- Gherkin-based Testing - Executes API and UI automation tests using human-readable Gherkin feature files.
- Test Step Variable Propagation - Maintains a common data store to pass values and state between different test steps.
- Frontend API Mocking - Provides tools for simulating backend API responses and endpoints to test applications in isolation.
- JVM Instance Isolation - Processes multiple test scenarios concurrently using independent virtual machine instances for isolation.
- Response Schema Validators - Verifies JSON and XML response bodies by matching them against expected structural patterns.
- API Mocking - Ships a local server that delivers dynamic responses to emulate backend behavior for development and testing.
- API Testing - Provides a framework for writing and executing functional tests for HTTP services to validate responses.
- Automated Test Execution - Runs sequences of test steps using shared variables and parallel processing to automate complex user workflows.
- Browser Automation - Provides a framework for simulating user journeys via automated browser interactions.
- HTTP Mock Servers - Includes an embedded HTTP mock server to simulate backend behavior for dependency simulation.
- HTTP Request Clients - Provides libraries for executing programmatic HTTP requests to validate backend services.
- Response Body Assertions - Validates HTTP response bodies using Gherkin syntax to verify JSON and XML data structures.
- Automated End-to-End Testing - Automates browser interactions to verify complex user workflows and interface functionality.
- Test Orchestrators - Acts as a JVM test orchestrator that executes scriptable logic with thread-safe concurrent processing.
- JavaScript Bridges - Executes scriptable logic within a JVM environment using a bridge between Java and JavaScript.
- API Performance Testing Tools - Scales functional test suites into load and stress tests to identify processing bottlenecks.
- Functional-to-Performance Scaling - Transforms existing functional test scenarios into high-concurrency load generators for stability measurement.
- Visual Regression Testing - Compares current interface screenshots against baseline images to detect unintended visual changes.
- Screenshot Comparison - Detects interface changes by comparing current screenshots against baseline images using pixel-matching analysis.
- API Testing Tools - A unified framework for API testing and test automation.
- Testing Frameworks - Unified framework for API automation, mocking, and performance.
