Add %check section

packaging/template.spec

 %install
 %make_install PREFIX=/usr
 
+%check
+make test \
+    "PATH=%{buildroot}%{_bindir}:$PATH" \
+    "SHELLFU_DIR=%{buildroot}%{_datadir}/%{name}"
+
 %files
 %doc %{_docdir}/%{name}/README.md
 %{_datadir}/shellfu/include-bash/saturnin.sh