tests/set-e.tests

   1 if : ; then
   2         set -e
   3         N=95
   4         while :; do
   5                 # expr returns 1 if expression is null or 0
   6                 set +e
   7                 N_MOD_100=`expr $N % 100`
   8                 set -e
   9                 echo $N_MOD_100
  10                 N=`expr $N + 1`
  11                 if [ $N -eq 110 ]; then
  12                         break
  13                 fi
  14         done
  15         set +e
  16 fi
  17
  18 (
  19 set -e
  20 false
  21 echo bad
  22 )
  23 echo $?
  24
  25 x=$(
  26 set -e
  27 false
  28 echo bad
  29 )
  30 echo $? $x
  31
  32 # command subst should not inherit -e
  33 set -e
  34 echo $(false; echo ok)
  35
  36 if set +e
  37 then
  38         false
  39 fi
  40 echo hi
  41
  42 set -e
  43
  44 # a failing command in the compound list following a while, until, or
  45 # if should not cause the shell to exit
  46
  47 while false; do
  48         echo hi
  49 done
  50 echo while succeeded
  51
  52 x=1
  53 until (( x == 4 )); do
  54         x=4
  55 done
  56 echo until succeeded: $x
  57
  58 if false; then
  59         echo oops
  60 fi
  61 echo if succeeded
  62
  63 # failing commands that are part of an AND or OR list should not
  64 # cause the shell to exit
  65 false && echo AND list failed
  66 echo AND list succeeded
  67
  68 false || echo OR list succeeded
  69
  70 ! false
  71 echo ! succeeded
  72
  73 # make sure eval preserves the state of the -e flag and `!' reserved word
  74 set -e
  75 if eval false; then
  76         echo oops
  77 fi
  78 echo eval succeeded
  79
  80 ! eval false
  81 echo ! eval succeeded -- 1
  82
  83 ! eval '(exit 5)'
  84 echo ! eval succeeded -- 2
  85
  86 set -e
  87 until builtin false; do echo a; break; done
  88 echo $?
  89
  90 until eval false; do echo b; break; done
  91 echo $?
  92
  93 : ${TMPDIR:=/tmp}
  94 FN=$TMPDIR/set-e-$$
  95 cat > $FN << EOF
  96 false
  97 echo after 1
  98 false
  99 EOF
 100
 101 set -e
 102 until . $FN; do echo a; break; done
 103 echo $?
 104
 105 rm -f $FN
 106
 107 set +e
 108
 109 ${THIS_SH} ./set-e1.sub
 110 ${THIS_SH} ./set-e2.sub
 111 ${THIS_SH} ./set-e3.sub