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#!/bin/bash
source ./assert.sh
PROGRAM_EXEC="$1"
rm -f input base out
touch base out
assert "" "cannot get size of input file" 1 $PROGRAM_EXEC backup input base out
rm -f input base out
touch input out
assert "" "cannot get size of base file" 1 $PROGRAM_EXEC backup input base out
rm -f input base out
rmdir outdir 2>/dev/null
touch input base
mkdir outdir
chmod -w outdir
assert "" "cannot open output file" 1 $PROGRAM_EXEC backup input base outdir/out
rm -f input base out
rmdir outdir
exit 0
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