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+#!/bin/bash
+
+[ -f testing.sh ] && . testing.sh
+
+#testing "name" "command" "result" "infile" "stdin"
+
+testing "mkfifo" "mkfifo one && [ -p one ] && echo yes" "yes\n" "" ""
+rm one
+
+touch existing
+testing "mkfifo existing" \
+ "mkfifo existing 2> /dev/null || [ -f existing ] && echo yes" "yes\n" "" ""
+rm existing
+
+testing "mkfifo one two" \
+ "mkfifo one two && [ -p one ] && [ -p two ] && echo yes" "yes\n" "" ""
+rm one two
+
+umask 123
+testing "mkfifo (default permissions)" \
+ "mkfifo one && stat -c %a one" "644\n" "" ""
+rm one
+
+umask 000
+
+testing "mkfifo -m 124" \
+ "mkfifo -m 124 one && stat -c %a one" "124\n" "" ""
+rm -f one