test-lib: fix test_str_contains

License: MIT
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>

test/sharness/lib/test-lib.sh

@@ -321,7 +321,7 @@ test_should_contain() {
 test_str_contains() {
 	find=$1
 	shift
-	echo "$@" | grep "$find" >/dev/null
+	echo "$@" | grep "\b$find\b" >/dev/null
 }
 
 disk_usage() {