Provide an interface for collecting exceptions

[kcooney]

It would be useful to provide an interface that could be implemented by classes like org.junit.rules.ErrorCollector. This could be useful for libraries like Truth.

We should consider giving the interface a signature compatible with java.util.function.Consumer.

[sbrannen]

Do you mean something as simple as the following?

public interface ExceptionCollector {

    void add(Throwable t);

}

[kcooney]

@sbrannen Yes. But we may want to have the same signature as Consumer so it can extend Consumer<Throwable> later.

If you don't feel like Consumer is a good fit, then I suggest naming the method addError() so ErrorCollector can implement it with no API changes.

[kriegfrj]

+1

Is this issue going anywhere? I'm currently investigating how Mockito's VerificationCollector and AssertJ's SoftAssertions could play nicely together, and I think a common interface like this might be part of the solution.

[sbrannen]

@kriegfrj, this issue dropped off our radar, but now that you bring it up, I think it's something worth considering.

Anyone care to submit a PR to get the ball rolling?

[kriegfrj]

I made some relevant comments to this issue under assertj/assertj#1459.