tests/mv/into-self-4

   1 #!/bin/sh
   2 # confirm that `mv symlink symlink' doesn't remove symlink
   3 # Based on an example from David Luyer.
   4
   5 if test "$VERBOSE" = yes; then
   6   set -x
   7   mv --version
   8 fi
   9
  10 . $srcdir/../envvar-check
  11
  12 pwd=`pwd`
  13 tmp=mv-slink2.$$
  14 trap 'status=$?; cd $pwd; rm -rf $tmp && exit $status' 0
  15 trap '(exit $?); exit' 1 2 13 15
  16
  17 framework_failure=0
  18 mkdir $tmp || framework_failure=1
  19 cd $tmp || framework_failure=1
  20 touch file || framework_failure=1
  21 ln -s file s || framework_failure=1
  22
  23 if test $framework_failure = 1; then
  24   echo 'failure in testing framework' 1>&2
  25   (exit 1); exit
  26 fi
  27
  28 fail=0
  29
  30 # This must fail.
  31 mv s s 2> /dev/null && fail=1
  32
  33 # But the symlink, s, must not be removed.
  34 # Before 4.0.36, `s' would have been removed.
  35 test -f s || fail=1
  36
  37 (exit $fail); exit