1 files changed, 2 insertions, 5 deletions
diff --git a/tests/tty.test b/tests/tty.test
index 6f2cb4b..5199e6a 100644
--- a/tests/tty.test
+++ b/tests/tty.test
@@ -1,10 +1,7 @@
 source [file dirname [info script]]/testing.tcl
 
-set havetty 0
-catch {
-    set havetty [expr {"tty" in [stdout -commands]}]
-}
-if {!$havetty || ![stdout isatty]} {
+needs cmd {stdout tty}
+if {![stdout isatty]} {
     skiptest "  (aio tty)"
 }