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+#!/bin/sh
+
+# SUSv3 compliant uniq tests.
+# Copyright 2005 by Rob Landley <rob@landley.net>
+# Licensed under GPL v2, see file LICENSE for details.
+
+# AUDIT: Full SUSv3 coverage (except internationalization).
+
+. testing.sh
+
+# testing "test name" "options" "expected result" "file input" "stdin"
+#   file input will be file called "input"
+#   test can create a file "actual" instead of writing to stdout
+
+# Test exit status
+
+testing "uniq (exit with error)" "uniq nonexistent 2> /dev/null || echo yes" \
+        "yes\n" "" ""
+testing "uniq (exit success)" "uniq /dev/null && echo yes" "yes\n" "" ""
+
+# Test various data sources and destinations
+
+testing "uniq (default to stdin)" "uniq" "one\ntwo\nthree\n" "" \
+        "one\ntwo\ntwo\nthree\nthree\nthree\n"
+testing "uniq - (specify stdin)" "uniq -" "one\ntwo\nthree\n" "" \
+        "one\ntwo\ntwo\nthree\nthree\nthree\n"
+testing "uniq input (specify file)" "uniq input" "one\ntwo\nthree\n" \
+        "one\ntwo\ntwo\nthree\nthree\nthree\n" ""
+
+testing "uniq input outfile (two files)" "uniq input actual > /dev/null" \
+        "one\ntwo\nthree\n" "one\ntwo\ntwo\nthree\nthree\nthree\n" ""
+testing "uniq (stdin) outfile" "uniq - actual" \
+        "one\ntwo\nthree\n" "" "one\ntwo\ntwo\nthree\nthree\nthree\n"
+# Note: SUSv3 doesn't seem to require support for "-" output, but we do anyway.
+testing "uniq input - (specify stdout)" "uniq input -" \
+        "one\ntwo\nthree\n" "one\ntwo\ntwo\nthree\nthree\nthree\n" ""
+
+
+#-f skip fields
+#-s skip chars
+#-c occurrences
+#-d dups only
+#-u
+
+# Test various command line options
+
+# Leading whitespace is a minor technical violation of the spec,
+# but since gnu does it...
+testing "uniq -c (occurrence count)" "uniq -c | sed 's/^[ \t]*//'" \
+        "1 one\n2 two\n3 three\n" "" \
+        "one\ntwo\ntwo\nthree\nthree\nthree\n"
+testing "uniq -d (dups only) " "uniq -d" "two\nthree\n" "" \
+        "one\ntwo\ntwo\nthree\nthree\nthree\n"
+
+testing "uniq -f -s (skip fields and chars)" "uniq -f2 -s 3" \
+"cc     dd      ee8
+aa      bb      cc9
+" "" \
+"cc     dd      ee8
+bb      cc      dd8
+aa      bb      cc9
+"
+
+# -d is "Suppress the writing fo lines that are not repeated in the input."
+# -u is "Suppress the writing of lines that are repeated in the input."
+# Therefore, together this means they should produce no output.
+testing "uniq -u and -d produce no output" "uniq -d -u" "" "" \
+        "one\ntwo\ntwo\nthree\nthree\nthree\n"
+
+exit $FAILCOUNT