English to Russian Tech/Engineering Computers: Software Google Go

https://google.github.io/styleguide/go/best-practices

Use **real transports**

When testing component integrations, especially where HTTP or RPC are used as the underlying transport between the components, prefer using the **real underlying transport** to connect to the test version of the backend.

For example, suppose the code you want to test (sometimes referred to as “system under test” or SUT) interacts with a backend that implements the long running operations API. To test your SUT, use a real OperationsClient that is connected to a test double (e.g., a mock, stub, or fake) of the OperationsServer.

This is recommended over hand-implementing the client, due to the complexity of imitating client behavior correctly. By using the production client with a test-specific server, you ensure your test is using as much of the real code as possible.

Tip: Where possible, use a testing library provided by the authors of the service under test.