Microservices Testing Strategies for Microservices

Question 1

Which type of test verifies that two microservices can communicate correctly according to a shared contract, without requiring both services to be running simultaneously?

Accepted Answer

Contract test

Answer

Contract tests (e.g., using Pact) verify that a consumer and provider agree on the API interface, allowing each service to be tested independently against the recorded contract.

Question 2

In the microservices testing pyramid, which layer should contain the largest number of tests?

Accepted Answer

Unit tests

Answer

Unit tests form the base and largest layer of the testing pyramid because they are fast, cheap to run, and provide immediate feedback on individual components.

Question 3

What is a 'test double' in the context of microservices testing?

Accepted Answer

A replacement object (stub, mock, or fake) used in place of a real dependency

Answer

A test double is a generic term for any object that stands in for a real dependency during testing, including stubs, mocks, spies, and fakes.

Question 4

Which testing tool is most commonly associated with consumer-driven contract testing in microservices?

Accepted Answer

Pact

Answer

Pact is the leading tool for consumer-driven contract testing, allowing consumers to define expected interactions and providers to verify they meet those contracts.

Question 5

What is the primary goal of a 'component test' in a microservices architecture?

Accepted Answer

Test a single microservice in isolation by replacing its external dependencies with test doubles

Answer

Component tests focus on a single microservice, replacing real external collaborators with stubs or mocks to verify the service's behavior in isolation.

Microservices Practice Test

Microservices Practice Test

Microservices Testing Strategies for Microservices