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+#!/bin/bash
+
+# SUSv3 compliant sort tests.
+# Copyright 2005 by Rob Landley <rob@landley.net>
+# Licensed under GPL v2, see file LICENSE for details.
+
+. testing.sh
+
+# The basic tests. These should work even with the small busybox.
+
+testing "sort" "sort input" "a\nb\nc\n" "c\na\nb\n" ""
+testing "sort #2" "sort input" "010\n1\n3\n" "3\n1\n010\n" ""
+testing "sort stdin" "sort" "a\nb\nc\n" "" "b\na\nc\n"
+testing "sort numeric" "sort -n input" "1\n3\n010\n" "3\n1\n010\n" ""
+testing "sort reverse" "sort -r input" "wook\nwalrus\npoint\npabst\naargh\n" \
+ "point\nwook\npabst\naargh\nwalrus\n" ""
+
+# These tests require the full option set.
+
+optional FEATURE_SORT_BIG
+# Longish chunk of data re-used by the next few tests
+
+data="42 1 3 woot
+42 1 010 zoology
+egg 1 2 papyrus
+7 3 42 soup
+999 3 0 algebra
+"
+
+# Sorting with keys
+
+testing "sort one key" "sort -k4,4 input" \
+"999 3 0 algebra
+egg 1 2 papyrus
+7 3 42 soup
+42 1 3 woot
+42 1 010 zoology
+" "$data" ""
+
+testing "sort key range with numeric option" "sort -k2,3n input" \
+"42 1 010 zoology
+42 1 3 woot
+egg 1 2 papyrus
+7 3 42 soup
+999 3 0 algebra
+" "$data" ""
+
+# Busybox is definitely doing this one wrong just now. FIXME
+
+testing "sort key range with numeric option and global reverse" \
+"sort -k2,3n -r input" \
+"egg 1 2 papyrus
+42 1 3 woot
+42 1 010 zoology
+999 3 0 algebra
+7 3 42 soup
+" "$data" ""
+
+#
+
+testing "sort key range with multiple options" "sort -k2,3rn input" \
+"7 3 42 soup
+999 3 0 algebra
+42 1 010 zoology
+42 1 3 woot
+egg 1 2 papyrus
+" "$data" ""
+
+testing "sort key range with two -k options" "sort -k 2,2n -k 1,1r input" "\
+d 2
+b 2
+c 3
+" "\
+c 3
+b 2
+d 2
+" ""
+
+testing "sort with non-default leading delim 1" "sort -n -k2 -t/ input" "\
+/a/2
+/b/1
+" "\
+/a/2
+/b/1
+" ""
+
+testing "sort with non-default leading delim 2" "sort -n -k3 -t/ input" "\
+/b/1
+/a/2
+" "\
+/b/1
+/a/2
+" ""
+
+testing "sort with non-default leading delim 3" "sort -n -k3 -t/ input" "\
+//a/2
+//b/1
+" "\
+//a/2
+//b/1
+" ""
+
+testing "sort -u should consider field only when discarding" "sort -u -k2 input" "\
+a c
+" "\
+a c
+b c
+" ""
+
+testing "sort key doesn't strip leading blanks, disables fallback global sort" \
+"sort -n -k2 -t ' '" " a \n 1 \n 2 \n" "" " 2 \n 1 \n a \n"
+
+exit $FAILCOUNT