Tests for #118

[lubomudr]

Hi

Tests and additional check for PR #118

[lubomudr]

Still, the question remains, what to do with requests like /bar?arg1&arg2 (without = value)
NGINX does not pass them through $arg_* variables, but you can get the entire argument string through $args, $request, etc.
But if you throw exception 12 (invalid request), then quite a lot will fire at once
Of course, all this can be registered through a white list (and this is probably correct), but this will break many working configurations
On the other hand, this will help to find not very correct queries and convey information to developers

[wargio]

i think those ?arg1&arg2 are ok.