Add head test for -123.

diff --git a/tests/head.test b/tests/head.test
index eeb07e0..d4eecd9 100755 (executable)
--- a/tests/head.test
+++ b/tests/head.test
@@ -7,6 +7,8 @@
 testing "head, stdin" "head -n 1 && echo yes" "one\nyes\n" "" "one\ntwo"
 testing "head, stdin via -" "head -n 1 - && echo yes" "one\nyes\n" "" "one\ntwo"
 testing "head, file" "head input -n 1 && echo yes" "one\nyes\n" "one\ntwo" ""
+testing "head -number" "head -2 input && echo yes" "one\ntwo\nyes\n" \
+       "one\ntwo\nthree\nfour" ""
 testing "head, default lines" "head" "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n" "" "1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12"
 
 echo "foo