Test format of write error messages during binary [chan copy]

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/io.test b/tests/io.test
index b707c01..cef3e81 100644
--- a/tests/io.test
+++ b/tests/io.test
@@ -7642,6 +7642,36 @@ test io-53.13 {TclCopyChannel: read error reporting} -setup {
     removeFile out
     rename driver {}
 } -result {error reading "*": *} -returnCodes error -match glob
+test io-53.14 {TclCopyChannel: write error reporting} -setup {
+    proc driver {cmd args} {
+        variable buffer
+        variable index
+        set chan [lindex $args 0]
+        switch -- $cmd {
+            initialize {
+                return {initialize finalize watch write}
+            }
+            finalize {
+                return
+            }
+            watch {}
+            write {
+                error FAIL
+            }
+        }
+    }
+    set inFile [makeFile {aaa} in]
+} -body {
+    set in [open $inFile rb]
+    set out [chan create write [namespace which driver]]
+    chan configure $out -translation binary
+    chan copy $in $out
+} -cleanup {
+    catch {close $in}
+    catch {close $out}
+    removeFile in
+    rename driver {}
+} -result {error writing "*": *} -returnCodes error -match glob
 
 test io-54.1 {Recursive channel events} {socket fileevent} {
     # This test checks to see if file events are delivered during recursive