3389733 Convert [testthread] use to Thread package use in *io-70.1.

Eliminates a memory leak in `make valgrind`.

1 files changed, 8 insertions, 25 deletions

diff --git a/tests/io.test b/tests/io.test
index e28948f..8a7cc51 100644
--- a/tests/io.test
+++ b/tests/io.test
@@ -37,7 +37,7 @@ testConstraint fcopy            [llength [info commands fcopy]]
 testConstraint testfevent       [llength [info commands testfevent]]
 testConstraint testchannelevent [llength [info commands testchannelevent]]
 testConstraint testmainthread   [llength [info commands testmainthread]]
-testConstraint testthread       [llength [info commands testthread]]
+testConstraint thread [expr {0 == [catch {package require Thread 2.6}]}]
 
 # You need a *very* special environment to do some tests.  In
 # particular, many file systems do not support large-files...
@@ -7435,7 +7435,7 @@ test io-59.1 {Thread reference of channels} {testmainthread testchannel} {
     # More complicated tests (like that the reference changes as a
     # channel is moved from thread to thread) can be done only in the
     # extension which fully implements the moving of channels between
-    # threads, i.e. 'Threads'. Or we have to extend [testthread] as well.
+    # threads, i.e. 'Threads'.
 
     set f [open $path(longfile) r]
     set result [testchannel mthread $f]
@@ -7527,25 +7527,7 @@ test io-70.0 {Cutting & Splicing channels} {testchannel} {
 } {0 1 0}
 
 
-# Duplicate of code in "thread.test". Find a better way of doing this
-# without duplication. Maybe placement into a proc which transforms to
-# nop after the first call, and placement of its defintion in a
-# central location.
-
-if {[testConstraint testthread]} {
-    testthread errorproc ThreadError
-
-    proc ThreadError {id info} {
-	global threadError
-	set threadError $info
-    }
-
-    proc ThreadNullError {id info} {
-	# ignore
-    }
-}
-
-test io-70.1 {Transfer channel} {testchannel testthread} {
+test io-70.1 {Transfer channel} {testchannel thread} {
     set f [makeFile {... dummy ...} cutsplice]
     set c [open $f r]
 
@@ -7554,16 +7536,17 @@ test io-70.1 {Transfer channel} {testchannel testthread} {
     testchannel cut $c
     lappend res [catch {seek $c 0 start}]
 
-    set tid [testthread create]
-    testthread send $tid [list set c $c]
-    lappend res [testthread send $tid {
+    set tid [thread::create -preserved]
+    thread::send $tid [list set c $c]
+    thread::send $tid {load {} Tcltest}
+    lappend res [thread::send $tid {
 	testchannel splice $c
 	set res [catch {seek $c 0 start}]
 	close $c
 	set res
     }]
 
-    tcltest::threadReap
+    thread::release $tid
     removeFile cutsplice
 
     set res