Target - test all layers of SpringBoot REST application in isolation from external components.
Complexity - typical application uses database and makes calls to remote services.
Solutions:
a) Use spring-test support for integration tests. It actually starts whole app for you on random port. At the same time, all components of app can be wired into test for additional manipulations.
b) Use RestAssured to make calls to our application
c) Use RestTemplate to make remote calls and MockServer from spring-test to mock them
d) Use in-memory database. HSQLDB does the simulating job pretty well.
e) Use separate Spring profile to tweak app configuration
Here is a small example putting it all together:
Solutions:
a) Use spring-test support for integration tests. It actually starts whole app for you on random port. At the same time, all components of app can be wired into test for additional manipulations.
b) Use RestAssured to make calls to our application
c) Use RestTemplate to make remote calls and MockServer from spring-test to mock them
d) Use in-memory database. HSQLDB does the simulating job pretty well.
e) Use separate Spring profile to tweak app configuration
Here is a small example putting it all together:
