tcl tcltest unknown option -run

When I run ANY test I get the same message. Here is an example test:

package require tcltest
namespace import -force ::tcltest::*
test foo-1.1 {save 1 in variable name foo} {} {
    set foo 1
} {1}

I get the following output:

WARNING: unknown option -run: should be one of -asidefromdir, -constraints, -debug, -errfile, -file, -limitconstraints, -load, -loadfile, -match, -notfile, -outfile, -preservecore, -relateddir, -singleproc, -skip, -testdir, -tmpdir, or -verbose

I've tried multiple tests and nothing seems to work. Does anyone know how to get this working?