What tools do you use for contract testing?

For contract testing, I use tools that allow checking the compliance of interactions between services against predefined agreements (contracts). Some popular tools include:

• Pact — a widely used framework for contract testing that supports various languages.
• Spring Cloud Contract — for Java/Spring projects, allows automatic generation and verification of contracts.
• Postman — with collections and tests, simple contract testing can be implemented.

Example with Pact (in JavaScript):

const { Pact } = require('@pact-foundation/pact');

const provider = new Pact({
  consumer: 'ConsumerService',
  provider: 'ProviderService',
  port: 1234
});

// Define the contract and test the interaction

The choice of tool depends on the tech stack and project requirements.