From 7652b23c6d792756ea4ca43dfdf7aed78db58d72 Mon Sep 17 00:00:00 2001
From: dgp <dgp@users.sourceforge.net>
Date: Fri, 10 Oct 2014 15:38:15 +0000
Subject: New test io-53.15 for [ed29c4da21].

---
 tests/io.test | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/tests/io.test b/tests/io.test
index b8a5ab4..d1faf65 100644
--- a/tests/io.test
+++ b/tests/io.test
@@ -7610,6 +7610,51 @@ test io-53.11 {Bug 2895565} -setup {
     removeFile in
 } -result {40 bytes copied}
 
+test io-53.15 {[ed29c4da21] DoRead: fblocked seen as error} -setup {
+    proc driver {cmd args} {
+        variable buffer
+        variable index
+        variable blocked
+        set chan [lindex $args 0]
+        switch -- $cmd {
+            initialize {
+                set index($chan) 0
+                set buffer($chan) [encoding convertto utf-8 \
+                        [string repeat a 100]]
+                set blocked($chan) 1
+                return {initialize finalize watch read}
+            }
+            finalize {
+                unset index($chan) buffer($chan) blocked($chan)
+                return
+            }
+            watch {}
+            read {
+                if {$blocked($chan)} {
+                    set blocked($chan) [expr {!$blocked($chan)}]
+                    return -code error EAGAIN
+                }
+                set n [lindex $args 1]
+                set new [expr {$index($chan) + $n}]
+                set result [string range $buffer($chan) $index($chan) $new-1]
+                set index($chan) $new
+                return $result
+            }
+        }
+    }
+    set c [chan create read [namespace which driver]]
+    chan configure $c -encoding utf-8
+    set out [makeFile {} out]
+    set outChan [open $out w]
+    chan configure $outChan -encoding utf-8
+} -body {
+    chan copy $c $outChan
+} -cleanup {
+    close $outChan
+    close $c
+    removeFile out
+} -result 100
+
 test io-54.1 {Recursive channel events} {socket fileevent} {
     # This test checks to see if file events are delivered during recursive
     # event loops when there is buffered data on the channel.
-- 
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