matheusfm / hands-on-unit-tests

unit tests hands-on with mockito and junit

Unit Tests Hands-On

Test Pyramid

Unit Tests Libraries

• JUnit
• Mockito

Fakes are objects that have working implementations, but not same as production one.

Stub is an object that holds predefined data and uses it to answer calls during tests.

Mocks are objects that register calls they receive. In test assertion we can verify on Mocks that all expected actions were performed.

Spies are partial mocks

Requisitos

• Buscar primeiro no cache
• Se não existir no cache, buscar no disco
• Se o serviço de cache estiver indisponível, buscar no disco
• Salvar primeiro no disco, onde o ID é gerado, e depois no cache
• Lançar IllegalArgumentException se algum parâmetro for null