ttk/toggleswitch.test: bring test file initialization in accordance

Author: 1minus1is0

tests/ttk/toggleswitch.test

@@ -8,13 +8,16 @@
 
 package require tcltest 2.2; # needed for "-singleproc 0"
 
-# Load the main script "main.tcl", which takes care of:
+# Load the main script main.tcl, which takes care of:
 # - setup for the application and the root window
-# - loading and configuration of the tcltest test harness
-# - loading of the testutils mechanism together with its utility procs
+# - importing commands from the tcltest namespace
+# - loading of the testutils mechanism along with its utility procs
 # - loading of Tk specific test constraints (additionally to constraints
 #   provided by the package tcltest)
-tcltest::loadTestedCommands
+source [file join [file dirname [tcltest::configure -testdir]] main.tcl]
+
+# Ensure a pristine initial window state
+resetWindows
 
 #
 # TESTS