[Patch v1 1/3] test-lib-functions.sh: add generate_zero_bytes function

From

Rrandall.s.becker@rogers.com <randall.s.becker@rogers.com>

Date

Feb 9, 2019, 18:59 UTC

Message-ID

<20190209185930.5256-2-randall.s.becker@rogers.com>

In-Reply-To

<20190209185930.5256-1-randall.s.becker@rogers.com>

From: "Randall S. Becker" <rsbecker@nexbridge.com>

Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
---
 t/test-lib-functions.sh | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 92cf8f812..bbf68712c 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.

-- 
2.12.3