Okay, I've applied the patch and pushed the result.
Thank you very much, Sudarshan.
Note that, as Sudarshan mentions, this is a patch for the version of the tests for SRFI 113 included with SRFI 146, not the version that appears in the SRFI 113 repository. I was surprised to see how different the two versions are. Marc, do you know why the version of SRFI 113's tests included with SRFI 146 is so different?
Thanks.