tests/builtins.tests

   1 #   This program is free software: you can redistribute it and/or modify
   2 #   it under the terms of the GNU General Public License as published by
   3 #   the Free Software Foundation, either version 3 of the License, or
   4 #   (at your option) any later version.
   5 #
   6 #   This program is distributed in the hope that it will be useful,
   7 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
   8 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9 #   GNU General Public License for more details.
  10 #
  11 #   You should have received a copy of the GNU General Public License
  12 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  13 #
  14 # tests for miscellaneous builtins not tested elsewhere
  15 set +p
  16 set +o posix
  17
  18 ulimit -c 0 2>/dev/null
  19
  20 # check that break breaks loops
  21 for i in a b c; do echo $i; break; echo bad-$i; done
  22 echo end-1
  23 for i in a b c; do echo $i; break 1; echo bad-$i; done
  24 echo end-2
  25 for i in a b c; do
  26         for j in x y z; do
  27                 echo $i:$j
  28                 break
  29                 echo bad-$i
  30         done
  31         echo end-$i
  32 done
  33 echo end-3
  34
  35 # check that break breaks nested loops
  36 for i in a b c; do
  37         for j in x y z; do
  38                 echo $i:$j
  39                 break 2
  40                 echo bad-$i
  41         done
  42         echo end-$i
  43 done
  44 echo end
  45
  46 # check that continue continues loops
  47 for i in a b c; do echo $i; continue; echo bad-$i ; done
  48 echo end-1
  49 for i in a b c; do echo $i; continue 1; echo bad-$i; done
  50 echo end-2
  51 for i in a b c; do
  52         for j in x y z; do
  53                 echo $i:$j
  54                 continue
  55                 echo bad-$i-$j
  56         done
  57         echo end-$i
  58 done
  59 echo end-3
  60
  61 # check that continue breaks out of nested loops
  62 for i in a b c; do
  63         for j in x y z; do
  64                 echo $i:$j
  65                 continue 2
  66                 echo bad-$i-$j
  67         done
  68         echo end-$i
  69 done
  70 echo end
  71
  72 # check that `eval' re-evaluates arguments, but `builtin' and `command' do not
  73 AVAR='$BVAR'
  74 BVAR=foo
  75
  76 echo $AVAR
  77 builtin echo $AVAR
  78 command echo $AVAR
  79 eval echo \$AVAR
  80 eval echo $AVAR
  81
  82 # test out eval with a temp environment
  83 AVAR=bar eval echo \$AVAR
  84 BVAR=xxx eval echo $AVAR
  85
  86 unset -v AVAR BVAR
  87
  88 # test umask
  89 mask=$(umask)
  90 umask 022
  91 umask
  92 umask -S
  93 umask -S u=rwx,g=rwx,o=rx >/dev/null # 002
  94 umask
  95 umask -S
  96 umask -p
  97 umask -p -S
  98 umask 0
  99 umask -S
 100 umask ${mask}   # restore original mask
 101
 102 # builtin/command without arguments should do nothing.  maybe someday they will
 103 builtin
 104 command
 105
 106 # test enable
 107 enable -ps
 108
 109 enable -aps ; enable -nps
 110
 111 enable -n test
 112 case "$(type -t test)" in
 113 builtin)        echo oops -- enable -n test failed ;;
 114 *)      echo enable -n test worked ;;
 115 esac
 116
 117 enable test
 118 case "$(type -t test)" in
 119 builtin)        echo enable test worked ;;
 120 *)      echo oops -- enable test failed ;;
 121 esac
 122
 123 # test options to exec
 124 (exec -a specialname ${THIS_SH} -c 'echo $0' )
 125 (exec -l -a specialname ${THIS_SH} -c 'echo $0' )
 126 # test `clean' environment.  if /bin/sh is bash, and the script version of
 127 # printenv is run, there will be variables in the environment that bash
 128 # sets on startup.  Also test code that prefixes argv[0] with a dash.
 129 (export FOO=BAR ; exec -c -l printenv ) | grep FOO
 130 (FOO=BAR exec -c printenv ) | grep FOO
 131
 132 (export FOO=BAR ; exec printenv ) | grep FOO
 133 (FOO=BAR exec printenv ) | grep FOO
 134
 135 # ok, forget everything about hashed commands
 136 hash -r
 137 hash
 138
 139 # this had better succeed, since command -p guarantees we will find the
 140 # standard utilities
 141 command -p hash rm
 142
 143 # check out source/.
 144
 145 # sourcing a zero-length-file had better not be an error
 146 rm -f /tmp/zero-length-file
 147 cp /dev/null /tmp/zero-length-file
 148 . /tmp/zero-length-file
 149 echo $?
 150 rm /tmp/zero-length-file
 151
 152 AVAR=AVAR
 153
 154 . ./source1.sub
 155 AVAR=foo . ./source1.sub
 156
 157 . ./source2.sub
 158 echo $?
 159
 160 set -- a b c
 161 . ./source3.sub
 162
 163 # make sure source with arguments does not change the shell's positional
 164 # parameters, but that the sourced file sees the arguments as its
 165 # positional parameters
 166 echo "$@"
 167 . ./source3.sub x y z
 168 echo "$@"
 169
 170 # but if the sourced script sets the positional parameters explicitly, they
 171 # should be reflected in the calling shell's positional parameters.  this
 172 # also tests one of the shopt options that controls source using $PATH to
 173 # find the script
 174 echo "$@"
 175 shopt -u sourcepath
 176 . source4.sub
 177 echo "$@"
 178
 179 # this is complicated when the sourced scripts gets its own positional
 180 # parameters from arguments to `.'
 181 set -- a b c
 182 echo "$@"
 183 . source4.sub x y z
 184 echo "$@"
 185
 186 # test out cd and $CDPATH
 187 ${THIS_SH} ./builtins1.sub
 188
 189 # test behavior of `.' when given a non-existent file argument
 190 ${THIS_SH} ./source5.sub
 191
 192 # test bugs in sourcing non-regular files, fixed post-bash-3.2
 193 ${THIS_SH} ./source6.sub
 194
 195 # test bugs with source called from multiline aliases and other contexts
 196 ${THIS_SH} ./source7.sub
 197
 198 # in posix mode, assignment statements preceding special builtins are
 199 # reflected in the shell environment.  `.' and `eval' need special-case
 200 # code.
 201 set -o posix
 202 echo $AVAR
 203 AVAR=foo . ./source1.sub
 204 echo $AVAR
 205
 206 AVAR=AVAR
 207 echo $AVAR
 208 AVAR=foo eval echo \$AVAR
 209 echo $AVAR
 210
 211 AVAR=AVAR
 212 echo $AVAR
 213 AVAR=foo :
 214 echo $AVAR
 215 set +o posix
 216
 217 # but assignment statements preceding `export' are always reflected in
 218 # the environment
 219 foo="" export foo
 220 declare -p foo
 221 unset foo
 222
 223 # assignment statements preceding `declare' should be displayed correctly,
 224 # but not persist after the command
 225 FOO='$$' declare -p FOO
 226 declare -p FOO
 227 unset FOO
 228
 229 # except for `declare -x', which should be equivalent to `export'
 230 FOO='$$' declare -x FOO
 231 declare -p FOO
 232 unset FOO
 233
 234 # test out kill -l.  bash versions prior to 2.01 did `kill -l num' wrong
 235 sigone=$(kill -l | sed -n 's:^ 1) *\([^         ]*\)[   ].*$:\1:p')
 236
 237 case "$(kill -l 1)" in
 238 ${sigone/SIG/}) echo ok;;
 239 *)      echo oops -- kill -l failure;;
 240 esac
 241
 242 # kill -l and trap -l should display exactly the same output
 243 sigonea=$(trap -l | sed -n 's:^ 1) *\([^        ]*\)[   ].*$:\1:p')
 244
 245 if [ "$sigone" != "$sigonea" ]; then
 246         echo oops -- kill -l and trap -l differ
 247 fi
 248
 249 # POSIX.2 says that exit statuses > 128 are mapped to signal names by
 250 # subtracting 128 so you can find out what signal killed a process
 251 case "$(kill -l $(( 128 + 1)) )" in
 252 ${sigone/SIG/}) echo ok;;
 253 *)      echo oops -- kill -l 129 failure;;
 254 esac
 255
 256 # out-of-range signal numbers should report the argument in the error
 257 # message, not 128 less than the argument
 258 kill -l 4096
 259
 260 # kill -l NAME should return the signal number
 261 kill -l ${sigone/SIG/}
 262
 263 # test behavior of shopt xpg_echo
 264 ${THIS_SH} ./builtins2.sub
 265
 266 # test behavior of declare -g
 267 ${THIS_SH} ./builtins3.sub
 268
 269 # test behavior of using declare to create variables without assigning values
 270 ${THIS_SH} ./builtins4.sub
 271
 272 # test behavior of set and unset array variables
 273 ${THIS_SH} ./builtins5.sub
 274
 275 # test behavior of unset builtin with -f and -v options
 276 ${THIS_SH} ./builtins6.sub
 277
 278 # test behavior of command builtin after changing it to a pseudo-keyword
 279 ${THIS_SH} ./builtins7.sub
 280
 281 # this must be last -- it is a fatal error
 282 exit status
 283
 284 echo after bad exit