test-lib: use more compact expression in PIPE prerequisite

Signed-off-by: Ramsay Jones <redacted>
Reviewed-by: Jonathan Nieder <redacted>
Signed-off-by: Junio C Hamano <redacted>

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 8a91fb10a9906ad0d4b09cff69f7dca7674425e1..c730c0bc1399e4d6c4846a4fe8d4afce28f0b51d 100644 (file)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1062,14 +1062,8 @@ test_i18ngrep () {
 
 test_lazy_prereq PIPE '
        # test whether the filesystem supports FIFOs
-       case $(uname -s) in
-       CYGWIN*|MINGW*)
-               false
-               ;;
-       *)
-               rm -f testfifo && mkfifo testfifo
-               ;;
-       esac
+       test_have_prereq !MINGW,!CYGWIN &&
+       rm -f testfifo && mkfifo testfifo
 '
 
 test_lazy_prereq SYMLINKS '