Karate is the only open-source tool to combine API test-automation, mocks, performance-testing and even UI automation into a single, unified framework. The BDD syntax popularized by Cucumber is language-neutral, and easy for even non-programmers. Assertions and HTML reports are built-in, and you can run tests in parallel for speed.

Its features include:

Scripts are plain-text, require no compilation step or IDE, and teams can collaborate using Git / standard SCM
Elegant DSL syntax ‘natively’ supports JSON and XML - including JsonPath and XPath expressions
Tests are super-readable - as scenario data can be expressed in-line, in human-friendly JSON, XML, Cucumber Scenario Outline tables, or a payload builder approach unique to Karate
Fully featured debugger that can step backwards and even re-play a step while editing it - a huge time-saver
Ideal for testing the highly dynamic responses from GraphQL API-s because of Karate’s built-in text-manipulation and JsonPath capabilities
Re-use of payload-data and user-defined functions across tests is so easy - that it becomes a natural habit for the test-developer
Support for data-driven tests and being able to tag or group tests is built-in, no need to rely on an external framework
Multi-threaded parallel execution, which is a huge time-saver, especially for integration and end-to-end tests
Option to use as a light-weight stand-alone executable - convenient for teams not comfortable with Java
Cross platform Desktop Automation that can be mixed into Web Automation flows if needed
Gatling integration can hook into any custom Java code - which means that you can perf-test even non-HTTP protocols such as gRPC
Mock HTTP Servlet that enables you to test any controller servlet such as Spring Boot / MVC or Jersey / JAX-RS - without having to boot an app-server, and you can use your HTTP integration tests un-changed

Suggested keywords:

Ginkgo - BDD Testing Framework for Go

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