Now for a real test of [chan truncate]...

2 files changed, 16 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 6f35d6e..aa7a75e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2005-06-07  Donal K. Fellows  <dkf@users.sf.net>
 
+	* tests/chan.test (chan-15.2): Added real test of truncation.
+
 	* generic/tclIO.c (Tcl_ChannelTruncateProc): Stop proliferation of
 	* generic/tcl.h:			     channel type versions
 	* doc/CrtChannel.3:			     following advice from AKu
diff --git a/tests/chan.test b/tests/chan.test
index 93cadc9..cf83820 100644
--- a/tests/chan.test
+++ b/tests/chan.test
@@ -7,7 +7,7 @@
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #
-# RCS: @(#) $Id: chan.test,v 1.2 2005/06/07 10:05:01 dkf Exp $
+# RCS: @(#) $Id: chan.test,v 1.3 2005/06/07 20:52:25 dkf Exp $
 
 if {[lsearch [namespace children] ::tcltest] == -1} {
     package require tcltest 2
@@ -76,6 +76,19 @@ test chan-14.1 {chan command: tell subcommand} -body {
 test chan-15.1 {chan command: truncate subcommand} -body {
     chan truncate foo bar foo bar
 } -returnCodes error -result "wrong \# args: should be \"chan truncate channelId ?length?\""
+test chan-15.2 {chan command: truncate subcommand} -constraints unix -setup {
+    set file [makeFile {} testTruncate]
+    set f [open $file w+]
+} -body {
+    fconfigure $f -translation binary
+    puts -nonewline $f 12345
+    seek $f 0
+    chan truncate $f 2
+    read $f
+} -result 12 -cleanup {
+    catch {close $f}
+    catch {removeFile $file}
+}
 
 cleanupTests
 return