Lepingutestimine

Lepingutestimine, also known as contract testing, is a software testing technique used to ensure that different services in a distributed system communicate correctly. It focuses on verifying the interactions between a service consumer and a service provider based on their agreed-upon contract. A contract is a formal agreement that defines the expected structure and content of requests and responses exchanged between services.

The primary goal of lepingutestimine is to prevent integration issues that often arise in microservices architectures. Instead of relying solely on end-to-end testing, which can be slow and brittle, lepingutestimine provides faster feedback on whether services adhere to their defined interfaces. This is achieved by testing the consumer's expectations against the provider's capabilities without needing to run both services simultaneously in a fully integrated environment.

In practice, lepingutestimine involves creating tests for the consumer that define its expectations for the provider's API. These tests generate contract files that are then shared with the provider. The provider then runs its own tests to verify that it fulfills the contract. If the provider's tests pass, it means the provider's API meets the consumer's expectations, and vice versa. This approach helps to catch breaking changes early in the development cycle, enabling teams to iterate faster and with greater confidence. Tools like Pact are commonly used to implement lepingutestimine.