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Dependency injection inside Unit testing

See original GitHub issue

Hi,

I have two components that need to talk to each other, to avoid the circular dependency issue, I’m using this.moduleRef.get on both components to access the instance methods.

When doing unit test with @nestjs/testing after creating the module and declare both components, the DI doesn’t works:

Scenario 1:

Component1 - declares dependency on Component2 via moduleRef
Component2 - declares dependency on Component1 via moduleRef
server behaviour: works
unit test behaviour: fails (both c1 -> c2 & c2 -> c1)

Scenario 2:

Component1 - declares dependency on Component2 via moduleRef
Component2 - declares dependency on Component1 via constructor
server behavour: works
unit test behaviour: fails for c1 -> c2 & works for c2 -> c1

So I can’t get it working 😦

Thanks!

Issue Analytics

State:
Created 6 years ago
Comments:5 (1 by maintainers)

Top GitHub Comments

10reactions

bariserecommented, Nov 11, 2018

It’s because the testing module is not calling application lifecycle hooks (onModuleInit and onModuleDestroy). You can just call the method manually slightly_smiling_face

Hi, @kamilmysliwiec. Is there any plan to make the testing module call application lifecycle hooks? It would be nice to have that too. PS: Nest is awesome 👍

0reactions

lock[bot]commented, Sep 24, 2019

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.

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