Ava only runs tests in their own processes if running in parallel mode. Even still, I don't think it captures the stdio, I think it just goes straight through to the console, which isn't what we want.

We could do away with the stdout capturing if we mock process.stdout and process.stderr.

@freitagbr ping. Any progress on this?

When I run the echo tests in concurrent mode, echo still prints to stdout. So, I think the best think to do in this situation would be to mock process.stdout and process.stderr. The std-mocks module looks like it might be useful for this purpose.

Yeah, that module seems fine

I did something similar for shx here and here

The downside to mocking like this is that we'll need to mock/restore within each test case (I don't think you can do it in setup/teardown). This is lots of boilerplate 😦

An alternative approach is to refactor echo() to take a configurable stream. It's always process.stdout in production, but we can set it to some other stream for tests only. But maybe that's too Java-ish 😜

Fixed in #708