With Tcl 8.5 it is not given that TclOO is available.

Author: rolf

modules/log/loggerUtils.test

@@ -91,8 +91,12 @@ proc msg {name {suffix {}}} {
     }
 }  -match regexp -output {\[[\d:\/ ]+\] \[catTest\] \[namespace\] \[critical\] test}
 
+::tcltest::testConstraint TclOO \
+    [expr {![catch {package require TclOO}]}]
 
-::tcltest::test createLogProc-2 {tkt e4d5ef01e7, %M OO context} -setup {
+::tcltest::test createLogProc-2 {tkt e4d5ef01e7, %M OO context} -constraints {
+    TclOO
+} -setup {
     package require TclOO
     ::oo::class create Main {
 	variable log