in batch or during test

in batch or during test

[Phillip Lord]

Is there a way to discover if Emacs is being run in batch and/or running
a test?

I have a package that uses "after-change-functions" and several other
"self-niling" hooks. If I have a bug in my package, the hook function
automatically gets removed, leaving the package in an inconsistent state
(because one hook may have gone but the others remain). So instead I use
"condition-case" to catch any errors and disable the entire package
(i.e. all of the hook functions) if an error occurs.

This works well, but unfortunately effectively swallows the backtrace.
Particularly annoying when I am running automated tests. So, I want to
write a macro like `condition-case-unless-debug' but which is "unless
running in batch or running ert". But I don't know how to find out if I
am in batch or running ert!

Phil

Re: in batch or during test

[Rusi]

On Tuesday, April 21, 2015 at 4:43:09 PM UTC+5:30, Phil Lord wrote:
> Is there a way to discover if Emacs is being run in batch and/or running
> a test?
> 
> I have a package that uses "after-change-functions" and several other
> "self-niling" hooks. If I have a bug in my package, the hook function
> automatically gets removed, leaving the package in an inconsistent state
> (because one hook may have gone but the others remain). So instead I use
> "condition-case" to catch any errors and disable the entire package
> (i.e. all of the hook functions) if an error occurs.
> 
> This works well, but unfortunately effectively swallows the backtrace.
> Particularly annoying when I am running automated tests. So, I want to
> write a macro like `condition-case-unless-debug' but which is "unless
> running in batch or running ert". But I don't know how to find out if I
> am in batch or running ert!
> 
> Phil

Maybe you want the variable 'noninteractive'?
(info "(elisp)batch mode")

Re: in batch or during test

[Phillip Lord]

Rusi <rustompmody@gmail.com> writes:
>> This works well, but unfortunately effectively swallows the backtrace.
>> Particularly annoying when I am running automated tests. So, I want to
>> write a macro like `condition-case-unless-debug' but which is "unless
>> running in batch or running ert". But I don't know how to find out if I
>> am in batch or running ert!
>> 
>> Phil
>
> Maybe you want the variable 'noninteractive'?
> (info "(elisp)batch mode")


Perfect, yes! I apropos'ed for "batch", but couldn't find it.

Phil

Re: in batch or during test

[Ted Zlatanov]

On Tue, 21 Apr 2015 12:13:00 +0100 phillip.lord@newcastle.ac.uk (Phillip Lord) wrote: 

PL> Is there a way to discover if Emacs is being run in batch and/or running
PL> a test?

I thought this article was very good on the topic of scripting with
Emacs: http://www.lunaryorn.com/2014/08/12/emacs-script-pitfalls.html

Ted