URI fragments in test cases

I notice the test cases use URI fragment like this:

<#TriplesMap1>

without defining an @base URI. For example:
http://www.w3.org/2001/sw/rdb2rdf/wiki/R2RML_Test_Cases_v1#R2RMLTC0000

It seems to me that it would be better to completely specify the URIs in the
test mappings rather than leaving them open in this way. From working with
implementing the test cases I have found that the ambiguity of the URIs gets
in the way of what we are really trying to test which is the R2RML mapping
functionality.

-David