--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/tail.test	Sat Sep 20 13:09:14 2014 -0500
@@ -0,0 +1,61 @@
+#!/bin/bash
+
+[ -f testing.sh ] && . testing.sh
+
+#testing "name" "command" "result" "infile" "stdin"
+
+BIGTEST="one\ntwo\nthree\nfour\nfive\nsix\nseven\neight\nnine\nten\neleven\n"
+echo -ne "$BIGTEST" > file1
+testing "tail" "tail && echo yes" "oneyes\n" "" "one"
+testing "tail file" "tail file1" \
+	"two\nthree\nfour\nfive\nsix\nseven\neight\nnine\nten\neleven\n" "" ""
+testing "tail -n in bounds" "tail -n 3 file1" "nine\nten\neleven\n" "" ""
+testing "tail -n out of bounds" "tail -n 999 file1" "$BIGTEST" "" ""
+testing "tail -n+ in bounds" "tail -n +3 file1" \
+	"three\nfour\nfive\nsix\nseven\neight\nnine\nten\neleven\n" "" ""
+testing "tail -n+ outof bounds" "tail -n +999 file1" "" "" ""
+testing "tail -c in bounds" "tail -c 27 file1" \
+	"even\neight\nnine\nten\neleven\n" "" ""
+testing "tail -c out of bounds" "tail -c 999 file1" "$BIGTEST" "" ""
+testing "tail -c+ in bounds" "tail -c +27 file1" \
+	"x\nseven\neight\nnine\nten\neleven\n" "" ""
+testing "tail -c+ out of bonds" "tail -c +999 file1" "" "" ""
+rm file1
+
+testing "tail stdin no trailing newline" "tail -n 1 - " "c" "" "a\nb\nc"
+testing "tail file no trailing newline" "tail -n 1 input" "c" "a\nb\nc" ""
+
+optional TAIL_SEEK
+testing "tail noseek -n in bounds" "tail -n 3" "nine\nten\neleven\n" \
+	"" "$BIGTEST"
+testing "tail noseek -n out of bounds" "tail -n 999" "$BIGTEST" "" "$BIGTEST"
+testing "tail noseek -n+ in bounds" "tail -n +3" \
+	"three\nfour\nfive\nsix\nseven\neight\nnine\nten\neleven\n" "" \
+	"$BIGTEST"
+testing "tail noseek -n+ outof bounds" "tail -n +999" "" "" "$BIGTEST"
+testing "tail noseek -c in bounds" "tail -c 27" \
+	"even\neight\nnine\nten\neleven\n" "" "$BIGTEST"
+testing "tail noseek -c out of bounds" "tail -c 999" "$BIGTEST" "" "$BIGTEST"
+testing "tail noseek -c+ in bounds" "tail -c +27" \
+	"x\nseven\neight\nnine\nten\neleven\n" "" "$BIGTEST"
+testing "tail noseek -c+ out of bonds" "tail -c +999" "" "" "$BIGTEST"
+
+makebigfile()
+{
+
+  for j in $(seq 1 100)
+  do
+    printf "%s " $j
+    for i in $(seq 1 100)
+    do
+      printf %s 123456789abcefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
+    done
+    echo
+  done
+}
+makebigfile > bigfile
+
+testing "tail -c 12345 -n 3 bigfile" "tail -c 12345 -n 3 bigfile | md5sum" \
+  "347bbdcbad8a313f4dc7bd558c5bfcb8  -\n" "" ""
+testing "tail -n 3 -c 12345 bigfile" "tail -n 3 -c 12345 bigfile | md5sum" \
+  "1698825a750288284ec3ba7d8a59f302  -\n" "" ""