* doc/refchan.n [Bug 2827000]: Extended the implementation of

	* generic/tclIORChan.c: reflective channels (TIP 219, method
	* tests/ioCmd.test: 'read'), enabling handlers to signal EAGAIN to
	indicate 'no data, but not at EOF either', and other system
	errors. Updated documentation, extended testsuite (New test cases
	iocmd*-23.{9,10}).

1 files changed, 73 insertions, 1 deletions

diff --git a/tests/ioCmd.test b/tests/ioCmd.test
index 1754dcd..ce9c98e 100644
--- a/tests/ioCmd.test
+++ b/tests/ioCmd.test
@@ -13,7 +13,7 @@
 # See the file "license.terms" for information on usage and redistribution
 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 #
-# RCS: @(#) $Id: ioCmd.test,v 1.49 2009/01/08 16:41:35 dkf Exp $
+# RCS: @(#) $Id: ioCmd.test,v 1.50 2009/08/06 22:28:12 andreas_kupries Exp $
 
 if {[lsearch [namespace children] ::tcltest] == -1} {
     package require tcltest 2
@@ -1015,6 +1015,38 @@ test iocmd-23.8 {chan read, level is squashed} -match glob -body {
     rename foo {}
     set res
 } -result {{read rc* 4096} 1 *bad code* {-code 1 -level 0 -errorcode NONE -errorline 1 -errorinfo *bad code*subcommand "read"*}}
+test iocmd-23.9 {chan read, no data means eof} -match glob -setup {
+    set res {}
+    proc foo {args} {
+	oninit; onfinal; track
+	return ""
+    }
+    set c [chan create {r w} foo]
+} -body {
+    note [read $c 2]
+    note [eof $c]
+    set res
+} -cleanup {
+    close $c
+    rename foo {}
+    unset res
+} -result {{read rc* 4096} {} 1}
+test iocmd-23.10 {chan read, EAGAIN means no data, yet no eof either} -match glob -setup {
+    set res {}
+    proc foo {args} {
+	oninit; onfinal; track
+	error EAGAIN
+    }
+    set c [chan create {r w} foo]
+} -body {
+    note [read $c 2]
+    note [eof $c]
+    set res
+} -cleanup {
+    close $c
+    rename foo {}
+    unset res
+} -result {{read rc* 4096} {} 0}
 
 # --- === *** ###########################
 # method write
@@ -2246,6 +2278,46 @@ test iocmd.tf-23.8 {chan read, level is squashed} -match glob -body {
     set res
 } -result {{read rc* 4096} 1 *bad code* {-code 1 -level 0 -errorcode NONE -errorline 1 -errorinfo *bad code*subcommand "read"*}} \
     -constraints {testchannel testthread}
+test iocmd.tf-23.9 {chan read, no data means eof} -match glob -setup {
+    set res {}
+    proc foo {args} {
+	oninit; onfinal; track
+	return ""
+    }
+    set c [chan create {r w} foo]
+} -body {
+    notes [inthread $c {
+	note [read $c 2]
+	note [eof $c]
+	close $c
+	notes
+    } c]
+    set res
+} -cleanup {
+    rename foo {}
+    unset res
+} -result {{read rc* 4096} {} 1} \
+    -constraints {testchannel testthread}
+test iocmd.tf-23.10 {chan read, EAGAIN means no data, yet no eof either} -match glob -setup {
+    set res {}
+    proc foo {args} {
+	oninit; onfinal; track
+	error EAGAIN
+    }
+    set c [chan create {r w} foo]
+} -body {
+    notes [inthread $c {
+	note [read $c 2]
+	note [eof $c]
+	close $c
+	notes
+    } c]
+    set res
+} -cleanup {
+    rename foo {}
+    unset res
+} -result {{read rc* 4096} {} 0} \
+    -constraints {testchannel testthread}
 
 # --- === *** ###########################
 # method write