From b0fa1a3f997403bc444cd7a65d798185e9d548ca Mon Sep 17 00:00:00 2001 From: "Randall S. Becker" Date: Sat, 9 Feb 2019 13:59:28 -0500 Subject: test-lib-functions.sh: add generate_zero_bytes function t5318 and t5562 used /dev/zero, which is not portable. This function provides both a fixed block of NUL bytes and an infinite stream of NULs. Signed-off-by: Randall S. Becker Signed-off-by: Junio C Hamano --- t/test-lib-functions.sh | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 't/test-lib-functions.sh') diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh index 92cf8f812c..bbf68712cc 100644 --- a/t/test-lib-functions.sh +++ b/t/test-lib-functions.sh @@ -116,6 +116,19 @@ remove_cr () { tr '\015' Q | sed -e 's/Q$//' } +# Generate an output of $1 bytes of all zeroes (NULs, not ASCII zeroes). +# If $1 is 'infinity', output forever or until the receiving pipe stops reading, +# whichever comes first. +generate_zero_bytes () { + perl -e 'if ($ARGV[0] == "infinity") { + while (-1) { + print "\0" + } + } else { + print "\0" x $ARGV[0] + }' "$@" +} + # In some bourne shell implementations, the "unset" builtin returns # nonzero status when a variable to be unset was not set in the first # place. -- cgit v1.2.3