Unit test of the backup-files script.

	# Test backup without options; it should link, not copy
	$ echo foo > foo
	$ echo bar > "space bar"
	$ sleep 1
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b foo
	> Copying foo

	$ ls -l foo | awk '{ print $2 }'
	> 2
	$ ls -l backup/foo | awk '{ print $2 }'
	> 2
	$ [ backup/foo -nt foo ] && echo "mtimes differ"

	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r foo
	> Restoring foo
	$ ls -l foo | awk '{ print $2 }'
	> 1

	# Test silent backup with -L; it should copy, not link
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -s -L foo

	$ ls -l foo | awk '{ print $2 }'
	> 1
	$ ls -l backup/foo | awk '{ print $2 }'
	> 1
	$ [ backup/foo -nt foo ] && echo "mtimes differ"

	# Test restore without options
	$ echo modified > foo
	$ sleep 1
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r foo
	> Restoring foo

	$ cat foo
	> foo
	$ [ -e backup/foo ] && echo "backup/foo not deleted"
	$ [ -e backup ] && echo "backup directory not deleted"

	# Test backup files with hard links
	$ ln foo foo2
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -s -L foo
	$ ls -l foo | awk '{ print $2 }'
	> 1
	$ ls -l backup/foo | awk '{ print $2 }'
	> 2

	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -s -L foo2
	$ ls -l foo | awk '{ print $2 }'
	> 1
	$ ls -l foo2 | awk '{ print $2 }'
	> 1
	$ ls -l backup/foo | awk '{ print $2 }'
	> 2
	$ ls -l backup/foo2 | awk '{ print $2 }'
	> 2

	# Test restore of files with hard links
	$ rm -f foo foo2
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -s foo
	$ ls -l foo | awk '{ print $2 }'
	> 2
	$ ls -l backup/foo2 | awk '{ print $2 }'
	> 2
	$ [ -e backup/foo ] && echo "backup/foo not deleted"
	$ [ ! -e foo2 ] || echo "file foo2 shouldn't exist"

	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -s foo2
	$ ls -l foo | awk '{ print $2 }'
	> 2
	$ ls -l foo2 | awk '{ print $2 }'
	> 2
	$ [ -e backup/foo2 ] && echo "backup/foo2 not deleted"
	$ [ -e backup ] && echo "backup directory not deleted"

	# Test restore with -t
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -s foo
	$ touch -r foo foo.timeref
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -s -t foo

	$ ls -l foo | awk '{ print $2 }'
	> 2
	$ [ foo -nt foo.timeref ] || echo "touch failed"

	# Test restore with -k
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -s -L foo "space bar"
	$ touch -r "space bar" bar.timeref
	$ ls -l backup/foo | awk '{ print $2 }'
	> 2
	$ ls -l "backup/space bar" | awk '{ print $2 }'
	> 1
	$ mkdir tmp
	$ cd tmp
	$ %{QUILT_DIR}/scripts/backup-files -B ../backup/ -r -s -k foo "space bar"
	$ cd ..

	$ ls -l foo | awk '{ print $2 }'
	> 1
	$ ls -l "space bar" | awk '{ print $2 }'
	> 1
	$ ls -l backup/foo | awk '{ print $2 }'
	> 3
	$ ls -l "backup/space bar" | awk '{ print $2 }'
	> 2
	$ ls -l tmp/foo | awk '{ print $2 }'
	> 3
	$ ls -l "tmp/space bar" | awk '{ print $2 }'
	> 2
	$ rm -rf tmp

	# Test restore all (-)
	$ rm -f foo "space bar"
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -s -t -
	$ cat foo
	> foo
	$ cat "space bar"
	> bar
	$ [ "space bar" -nt bar.timeref ] || echo "touch failed"

	# Backup and restore a non-existing files
	$ mkdir "dir with spaces"
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -s -L new "dir with spaces/space file"
	$ echo data > new
	$ echo data2 > "dir with spaces/space file"
	$ ls -l backup/new | awk '{ print $5 }'
	> 0
	$ ls -l "backup/dir with spaces/space file" | awk '{ print $5 }'
	> 0
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -s -
	$ [ ! -e backup/new ] || echo "file backup/new shouldn't exist"
	$ [ ! -e new ] || echo "file new shouldn't exist"
	$ [ ! -e "backup/dir with spaces/space file" ] || echo "file backup/dir with spaces/space file shouldn't exist"
	$ [ ! -e "dir with spaces/space file" ] || echo "file dir with spaces/space file shouldn't exist"

	# Test restore involving a dir name with spaces
	$ echo data > "dir with spaces/space file"
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -L "dir with spaces/space file"
	> Copying dir with spaces/space file
	$ rm -rf "dir with spaces"
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -
	> Restoring dir with spaces/space file
	$ cat "dir with spaces/space file"
	> data
	$ [ -e backup ] && echo "backup directory not deleted"

	# Test backup reading file list from a file
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -s -L -f -
	< foo
	< new
	< space bar
	$ echo data > new
	$ echo modified > foo
	$ rm -f "space bar"
	$ [ -e backup/new -a ! -s backup/new ] || echo "file backup/new isn't empty"
	$ ls -l backup/new | awk '{ print $5 }'
	> 0
	$ cat backup/foo
	> foo
	$ cat "backup/space bar"
	> bar
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -s -f -
	< foo
	< new
	< space bar
	$ [ ! -e backup/new ] || echo "file backup/new shouldn't exist"
	$ [ ! -e new ] || echo "file new shouldn't exist"
	$ cat foo
	> foo
	$ cat "space bar"
	> bar

	# Test the special -L alone case
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b -L -f -
	< new
	< foo
	< space bar
	> New file new
	> Copying foo
	> Copying space bar
	$ ln "space bar" "linked space"
	$ ls -l foo | awk '{ print $2 }'
	> 1
	$ ls -l "space bar" | awk '{ print $2 }'
	> 2
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -L -
	$ ls -l foo | awk '{ print $2 }'
	> 1
	$ ls -l "space bar" | awk '{ print $2 }'
	> 1
	$ [ ! -e new ] || echo "file new shouldn't exist"
	# Second call should be idempotent
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -L -
	$ ls -l foo | awk '{ print $2 }'
	> 1
	$ ls -l "space bar" | awk '{ print $2 }'
	> 1
	$ [ ! -e new ] || echo "file new shouldn't exist"
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r - | sort
	> Removing new
	> Restoring foo
	> Restoring space bar
	$ rm "linked space"

	# Test copy (as used by quilt snapshot)
	$ %{QUILT_DIR}/scripts/backup-files -B snapshot/ -c -f -
	< new
	< foo
	< space bar
	< dir with spaces/space file
	> New file new
	> Copying foo
	> Copying space bar
	> Copying dir with spaces/space file
	$ ls -l foo | awk '{ print $2 }'
	> 2
	$ ls -l "space bar" | awk '{ print $2 }'
	> 1
	$ ls -l "dir with spaces/space file" | awk '{ print $2 }'
	> 1
	$ [ ! -e new ] || echo "file new shouldn't exist"
	$ ls -l snapshot/new | awk '{ print $2 }'
	> 1
	$ ls -l snapshot/foo | awk '{ print $2 }'
	> 1
	$ ls -l snapshot/"space bar" | awk '{ print $2 }'
	> 1
	$ ls -l snapshot/"dir with spaces/space file" | awk '{ print $2 }'
	> 1
	$ [ ! -s new ] || echo "file snapshot/new should be empty"
	$ rm -rf snapshot

	# Test backup and restoration of a symbolic link
	$ mkdir dir
	$ ln -s foo dir/link
	$ readlink dir/link
	> foo
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -b dir/link
	> Copying dir/link
	$ readlink backup/dir/link
	> foo
	$ rm -f dir/link
	$ echo crap > dir/link
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -k dir/link
	> Restoring dir/link
	$ readlink dir/link
	> foo

	# Same but reading from a file
	$ rm -f dir/link
	$ echo crap > dir/link
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -k -f -
	< dir/link
	> Restoring dir/link
	$ readlink dir/link
	> foo

	# Same but without specifying the file
	$ rm -f dir/link
	$ echo crap > dir/link
	$ %{QUILT_DIR}/scripts/backup-files -B backup/ -r -
	> Restoring dir/link
	$ readlink dir/link
	> foo