Run the test suite, log results, and return true if any fail.
On recent Octave, this is a thin layer around the built-in Octave
command __run_test_suite__ ({'.'}, {}).
Testing should work once the package is installed, which is otherwise harder to test (need to know the installation directory).
TODO: eventually we should drop this file altogether, and use
pkg test symbolic instead, see
https://github.com/gnu-octave/symbolic/issues/1142
and https://savannah.gnu.org/bugs/?62681.
See also: test, runtests, doctest.
Package: symbolic