Add unit testing to java microservices

[phemankita]

Implement unit testing to all the services

• Inventory
• Catalog
• Customer
• Auth
• Orders

[oiricaud]

Created a pull request-6 for Inventory microservice to include a plain smoke test and actuator test.

[oiricaud]

Created a pull request-4 for Auth microservice microservice to include a plain smoke test and actuator test.

[oiricaud]

Created a pull request-4 for the Orders microservice to include a plain smoke test and actuator test.

[oiricaud]

Created a pull request-4 for the Catalog microservice to include a plain smoke test and actuator test.

[oiricaud]

FYI
I believe I found a bug on appsody view more details appsody-issue-821. In summary when using a appsody init on your spring boot stack, the MainTests class does not run the unit tests. Refactoring the default name of the class resolves this issue.

[oiricaud]

Created a pull request-13 for the Customer microservice to include a plain smoke test and actuator test.

[oiricaud]

@phemankita Can you review this when you get a chance, thanx

[phemankita]

@oiricaud We shd have simple tests for this to validate the app flow. For this the tests should be independent of the databases.

Necessary methods can be mocked using Mockito