Add Support for @MockBean

[eiswind]

When I try to run a test, that uses @MockBean I get

com.oracle.svm.core.jdk.UnsupportedFeatureError: Proxy class defined by interfaces [interface org.mockito.plugins.PluginSwitch] not found. Generating proxy classes at runtime is not supported.

I could not figure out how to allow the proxy manually, but I also think it would be helpful if spring native would support this ootb.

I created a little sample that reproduces the problem at https://github.com/eiswind/mockbean-spring-native

[sdeleuze]

Hi, as documented:

Libraries generating bytecode at runtime like Mockito are not supported.

This kind of use case needs to be solved on GraalVM side before we can support it here, so maybe raise an issue asking Mockito support in https://github.com/graalvm/native-build-tools on tooling side where there is support for tests in order to allow us to have a look with GraalVM team.

[eiswind]

Thanks for clearing that up. As of the last few days mockito added a new feature called proxy-mock-maker that allows for using jdk proxies only. I still fail to make it compile as the NativeHints seem not to apply for the Unit Test.

I think this could be a great addition to to native feature set still, so I hope you'll give it a shot.
The example still lives in the mentioned repo.

[haroldlbrown]

It seems to me that GraalVM is now supported by Mockito and that GraalVM in turn supports Mockito.