Writing Integration Test

[DrSensor]

Hi, I'm currently migrating my REPL program from traditional io::stdin to linefeed. Previously I'm using rexpect in my integration tests (I'm testing the binary result). However, when I migrating to linefeed and call read_line function, it gave me Inappropriate ioctl for device (os error 25) (ENOTTY for short).

Any crates/methods you can recommend for this? 🙂

[murarth]

The error means that linefeed could not initialize itself because stdin is not a terminal device. That makes sense, given that you say you are running the application from a testing program.

The solution to this issue is to have a fallback mode: When stdin is not a terminal, simply read input non-interactively.

This is actually something that linefeed should be doing, as a sensible convenience feature. I will try to implement this soon to resolve this issue.

[murarth]

I had initially thought that linefeed::Interfacecould implement a fallback non-interactive stdin reader transparently, but becase some public methods on Interface assume the existence of a valid Terminal instance, this would not be possible without some awkward API changes.

So, while it is a bit inconvenient, the best method of fallback would be to use std::io::stdin().