tcltest(n) on macOS
The text 417f92fd7a7a, as Mac OS X 10.4.2, Mac OS X 10.4.1, Mac OS X 10.4 shipped it.
Test harness support code and utilities
Flags it lists
-
-asidefromdir -
-constraints -
-debug -
-errfile -
-file -
-limitconstraints -
-load -
-loadfile -
-match -
-notfile -
-outfile -
-preservecore -
-relateddir -
-singleproc -
-skip -
-testdir -
-tmpdir -
-verbose