Re: [Xen-API] xen-api-libs unit tests

[Dave Scott <Dave.Scott@xxxxxxxxxxxxx>]

Hi Sergei,

> 1. Have you considered switching (at least partly) to property based testing 
> [*],
>  which works nicely for pure functions (for example most of the stuff from 
> `stdext`
>  can beÂcoveredÂin no time).

Yes, I think property based testing would be great. Since we use type-conv (via 
rpc-light)
to generate marshalling code from ocaml types, perhaps we could also use it to 
generate
streams of random values, which we could run through a property-checker. That 
would
cut down on the required boilerplate.

> 2. This is a bit unrelated, but anyway -- why don't you use ExtLib or 
> Batteries,
> instead of `stdext`? Obviously, the goal is the same for all three of these 
> libraries.
> And it would be really nice to see Batteries or ExtLib in a project as big as 
> XenAPI.

:-) I also agree that we should probably standardize on some other library. 
'stdext'
is really a big bag of functions which lacks a clean interface / nice usage 
convention.
I've not had the chance to use ExtLib or Batteries. I did attend Yaron Minsky's 
tutorial
at CUFP on Jane Street's Core Async library which seemed very well designed -- 
I think
Core is worth a close look.

Cheers,
Dave

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