Testing Services And Database e2e

[alex-osman]

I'm submitting a...

[ ] Regression 
[ ] Bug report
[ ] Feature request
[x] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead post your question on Stack Overflow.

Current behavior

In regards to e2e testing, one can mock Repositories when not interfacing with a database, but it is unclear how to use actual Repositories on a database within the e2e tests.

There is no documentation regarding testing services. This is not intuitive with all the DI specifics with testing.

Expected behavior

I would like to see examples in the documentation about how to pass Repos into e2e tests and how to test services.

What is the motivation / use case for changing the behavior?

Be able to test services and increase coverage and confidence in code.

[BrunnerLivio]

There is documentation how to test controllers. Services can be handled the same way. Still not enough? Check out the cat app sample
https://github.com/nestjs/nest/tree/master/sample/01-cats-app

[BrunnerLivio]

I saw you've changed the issue.
There is already an issue for that #409

I created an example for that: https://github.com/BrunnerLivio/nestjs-unit-test-db-example but it is written in Nest 4.x.x

[lucasmonstrox]

News?

[vpaul08]

Even, I'm struggling to find a way to test the services and increase the code coverage. The method defined in the sample app creates a mock for the service and the actual service never gets executed, hence reducing the coverage.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.