crypto module

[madtrick]

Hi,

I'm trying to mock the crypto module just to check if it gets called but an error is raised instead.

This is the error output:

9> meck:new(crypto).               

=ERROR REPORT==== 22-Mar-2012::18:53:02 ===
Unable to load crypto library. Failed with error:
"bad_lib, Library module name 'crypto' does not match calling module 'crypto_meck_original'"
OpenSSL might not be installed on this system.

=ERROR REPORT==== 22-Mar-2012::18:53:02 ===
The on_load function for module crypto_meck_original returned {error,
                                                               {bad_lib,
                                                                "Library module name 'crypto' does not match calling module 'crypto_meck_original'"}}
** exception exit: {error_loading_module,crypto_meck_original,on_load_failure}

Mocking other modules works perfectly.

[eproxus]

Seems that the crypto library requires the Erlang module to be named crypto: https://github.com/erlang/otp/blob/master/lib/crypto/c_src/crypto.c#L279. I have no idea why that is. Meck will rename it to crypto_meck_original and thus it won't work. You might want to ask on the Erlang mailinglist why it has to be named like that.

[russelldb]

Isn't this a NIF problem in general? "The first argument to ERL_NIF_INIT must be the name of the Erlang module as a C-identifier. "

[eproxus]

Possibly, I'm not that familiar with NIFs so I don't know. I think I've been able to mock NIFs before (although I haven't tried the crypto module) but I'm not sure...