1 files changed, 18 insertions, 0 deletions
diff --git a/tests/zlib.test b/tests/zlib.test
index d8d710a..4ed5b33 100644
--- a/tests/zlib.test
+++ b/tests/zlib.test
@@ -169,6 +169,24 @@ test zlib-8.4 {transformation and flushing: Bug 3517696} -setup {
     catch {close $fd}
     removeFile $file
 } -result {}
+test zlib-8.5 {transformation and flushing and fileevents: Bug 3525907} -setup {
+    foreach {r w} [chan pipe] break
+} -constraints zlib -body {
+    set ::res {}
+    fconfigure $w -buffering none
+    zlib push compress $w
+    puts -nonewline $w qwertyuiop
+    chan configure $w -flush sync
+    after 500 {puts -nonewline $w asdfghjkl;close $w}
+    fconfigure $r -blocking 0 -buffering none
+    zlib push decompress $r
+    fileevent $r readable {set msg [read $r];lappend ::res $msg;if {[eof $r]} {set ::done 1}}
+    after 250 {lappend ::res MIDDLE}
+    vwait ::done
+    set ::res
+} -cleanup {
+    catch {close $r}
+} -result {qwertyuiop MIDDLE asdfghjkl}
 
 test zlib-9.1 "check fcopy with push" -constraints zlib -setup {
     set sfile [makeFile {} testsrc.gz]