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diff --git a/scripts/test/expand.test b/scripts/test/expand.test
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+#!/bin/bash
+
+# POSIX 2008 compliant expand tests.
+# Copyright 2012 by Jonathan Clairembault <jonathan@clairembault.fr>
+
+[ -f testing.sh ] && . testing.sh
+
+# some basic tests
+
+testing "expand default" "expand input" " foo bar\n" "\tfoo\tbar\n" ""
+testing "expand default stdin" "expand" " foo bar\n" "" "\tfoo\tbar\n"
+testing "expand single" "expand -t 2 input" " foo bar\n" "\tfoo\tbar\n" ""
+testing "expand tablist" "expand -t 5,10,12 input" " foo bar foo\n" "\tfoo\tbar\tfoo\n" ""
+
+# advanced tests
+
+POW=15
+TABSTOP=1
+BIGTAB=" "
+for i in $(seq $POW); do
+ BIGTAB=$BIGTAB$BIGTAB
+ TABSTOP=$[$TABSTOP*2]
+done
+testing "expand long tab single" "expand -t $TABSTOP input" "${BIGTAB}foo\n" "\tfoo\n" ""
+testing "expand long tab tablist" "expand -t $TABSTOP,$[TABSTOP+5] input" \
+ "${BIGTAB}foo bar\n" "\tfoo\tbar\n" ""
+
+testing "expand multiline single" "expand -t 4 input" "foo \n bar\n" "foo\t\n\tbar\n" ""
+testing "expand multiline tablist" "expand -t 4,8 input" \
+ "foo bar\n bar foo\n" "foo\t\tbar\n\tbar\tfoo\n" ""
+POW=15
+BIGLINE="foo "
+for i in $(seq $POW); do
+ BIGLINE=$BIGLINE$BIGLINE
+done
+if [ $POW -gt 0 ]; then
+ EXPANDLINE="${BIGLINE} foo\n"
+else
+ EXPANDLINE="${BIGLINE} foo\n"
+fi
+BIGLINE="${BIGLINE}\tfoo\n"
+testing "expand long line single" "expand input" \
+ "${EXPANDLINE}" "$BIGLINE" ""