Version 1.10 is available upstream. Please consider updating! It seems that version 1.10 is available upstream, while the latest version in the Gentoo tree is 1.9. This information is provided from Release-Monitoring, so fix association issues there.
shelltestrunner is a cross-platform tool for testing command-line
programs (or arbitrary shell commands.) It reads simple declarative tests
specifying a command, some input, and the expected output, error output
and exit status. Tests can be run selectively, in parallel, with a
timeout, in color, and/or with differences highlighted.