check if a job exists

[argvk]

We probably need a way to check if a job (delayed and recurring as well) exists in the queue. It is something that I find very useful while writing test cases. Something like an assertJob would be nice.

Thoughts ?

[gresrun]

Are you thinking this would just be a method for testing or part of the Jesque API?

[argvk]

Just for testing.

[argvk]

coming to think of it, it may of value to have a SETNX operation that would add the job if it doesn't exist already. thoughts @gresrun ?

[argvk]

FWIW, I've done something similar on my fork, here's the diff https://github.com/gresrun/jesque/compare/master...argvk:recurring-nx