tests/dbg-support.tests

   1 #!../bash
   2 #
   3 # Test correct functioning bash debug support not via the bashdb
   4 # debugger but merely by printing via print_trap()
   5 # $Id: dbg-support.tests,v 1.13 2003/02/17 22:02:25 rockyb Exp $
   6 shopt -s extdebug
   7 print_debug_trap() {
   8    echo "debug lineno: $1 ${FUNCNAME[1]}"
   9    return
  10 }
  11
  12 print_return_trap() {
  13    echo "return lineno: $1 ${FUNCNAME[1]}"
  14    return
  15 }
  16
  17 fn1() {
  18     echo "LINENO $LINENO"
  19     echo "LINENO $LINENO"
  20     echo "BASH_SOURCE[0]" ${BASH_SOURCE[0]}
  21     echo "FUNCNAME[0]" ${FUNCNAME[0]}
  22     echo `caller`
  23     echo `caller 0`
  24     echo `caller 1`
  25     echo `caller foo`
  26 }
  27
  28 fn2() {
  29     echo "fn2 here. Calling fn1..."
  30     fn1
  31 }
  32
  33 fn3() {
  34     echo "LINENO $LINENO"
  35     echo "BASH_SOURCE[0]" ${BASH_SOURCE[0]}
  36
  37     # Print a stack trace
  38     declare -i n
  39     n=${#FUNCNAME[@]}
  40     for (( i=0 ; (( i < $n )) ; i++ )) ; do
  41         local -i j=i+1
  42         [ $j -eq $n ] && j=i  # main()'s file is the same as the first caller
  43         echo "${FUNCNAME[$i]} called from file " \
  44             "\`${BASH_SOURCE[$j]}' at line ${BASH_LINENO[$j]}"
  45     done
  46     source ./dbg-support.sub
  47 }
  48
  49 fn4() {
  50     echo "fn4 here. Calling fn3..."
  51     fn3
  52 }
  53
  54
  55 #!../bash
  56 #
  57 # Test of support for debugging facilities in bash
  58 #
  59 # Test debugger set option fntrace - set on. Not in vanilla Bash 2.05
  60 #
  61 set -o functrace
  62 trap 'print_debug_trap $LINENO' DEBUG
  63 trap 'print_return_trap $LINENO' RETURN
  64
  65 # Funcname is now an array. Vanilla Bash 2.05 doesn't have FUNCNAME array.
  66 echo "FUNCNAME" ${FUNCNAME[0]}
  67
  68 # We should trace into the below.
  69 # Start easy with a simple function.
  70 fn1
  71 fn2
  72 fn3
  73 source ./dbg-support.sub
  74
  75 # Test debugger set option fntrace - set off
  76 set +T
  77
  78 # We should not trace into this.
  79 fn1
  80 fn2
  81 fn3
  82 fn4
  83 source ./dbg-support.sub
  84
  85 # Another way to say: set -o fntrace
  86 set -T
  87
  88 # We should trace into this.
  89 source ./dbg-support.sub
  90 set +T
  91
  92 # Test that the line numbers in the presence of conditionals are correct.
  93 for (( i=0 ; (( i <= 2 )) ; i++ )) ; do
  94     if [ $i -eq 2 ] ; then
  95         echo "Hit 2"
  96     fi
  97     j=4
  98 done
  99
 100 #
 101 # Check line numbers in command substitution
 102 #
 103 echo $(sourced_fn)
 104 echo `sourced_fn`
 105 x=$((sourced_fn))
 106 x={ sourced_fn }
 107
 108 # Make sure we step into sourced_fn as a comand when we request to do so.
 109 # Vanilla bash 2.0 doesn't do.
 110 set -o functrace
 111 x={ sourced_fn }
 112
 113 # Should see line number of xyzzy below. Vanilla bash 2.05b doesn't do
 114 case xyzzy in
 115  a )
 116     x=5
 117     ;;
 118  xyzz? )
 119     case 3 in
 120       2 )
 121         x=6 ;;
 122       3 )
 123         echo "got it" ;;
 124       * ) echo "no good" ;;
 125       esac
 126     ;;
 127  * )
 128 esac
 129
 130 # Should see line numbers for initial for lines.
 131 for i in 0 1 ; do
 132   for j in 3 4 ; do
 133     ((x=i+j))
 134   done
 135 done
 136 #;;; Local Variables: ***
 137 #;;; mode:shell-script ***
 138 #;;; eval: (sh-set-shell "bash") ***
 139 #;;; End: ***