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Mock Configuration Admin


Level 1


I am writing Unit Test Cases for Sling Models, I have a function that gets Configurations from ConfigurationAdmin.listConfiguration() method. I'm using Junit 5 and Aem Mock for testing. How can I mock "listConfiguration()" method since currently an exception is thrown "java.lang.UnsupportedOperationException";

I tried by using spy and return mocked object whenever this function is called but still I get the same error.

0 Replies


Community Advisor

Can you share your code please? So we don't have to guess


Level 1


The ConfigurationAdmin object created throws exception on calling listConfigurations method as documented at


How to mock configurations here?


Level 1

Hi @Vabs95-ttn 


I just ran into this issue as well and created a PR to fix this by providing an implementation for the filtering:


Fyi: when an OSGi Mock Service is somehow not doing exactly what is needed / reflects a real world scenario, you can override it by specifying another implementation with a higher service.ranking, so you could have very well created your own implementation and hooked it in there.


In case of the MockConfigurationAdmin before the PR I just linked, it is not possible to override exception cases for the listConfigurations-method with Mockito, as it defines no exceptions to be thrown. You can however make a new interface implementation that delegates the method calls to the MockConfigurationAdmin, where you do specify that it throws all the exceptions. 


That issue is also fixed in that PR.