Feature request: providing stdout_only or stderr_only APIs

[mssun]

For example, I want to assert a command which only have specific stdout but does not have any stderr message. Currently, I have to write .stdout("msg").stderr("") or stdout("").stderr("error msg").

[mssun]

I'm debating on this suggestion myself. Besides these two, how about no output? Not sure if it's OK for current simplicity.

[epage]

This feels very specific to me which makes me lean to not adding these.

One reason why it feels very specific is generally a test should verify one requirement and I suspect there are few applications where you have to have only one or neither to check most requirements.

[epage]

Feel free to continue the conversation to help me better understand why this would be important, but for now I'm closing this.