Testsuite additions

[Paolo Carlini]

Hi Chris,
 
> Do these seem reasonable to people at first glance?

A very quick, first-glance-type, trivial indeed, comment: for future
submissions, please follow the coding conventions of the library: no
space between name and open parenthesis, open brace starting a block
always in a new line, space between constants and operators, lots and
*lots* and /lots/ of trivial stylistic problems of this type in your
code! Just have a look to the existing files do get an idea.

Paolo.