[3320] | 1 | # Simple test harness infrastructure for BusyBox
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| 2 | #
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| 3 | # Copyright 2005 by Rob Landley
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| 4 | #
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| 5 | # License is GPLv2, see LICENSE in the busybox tarball for full license text.
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| 6 |
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| 7 | # This file defines two functions, "testing" and "optional"
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| 8 | # and a couple more...
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| 9 |
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| 10 | # The following environment variables may be set to enable optional behavior
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| 11 | # in "testing":
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| 12 | # VERBOSE - Print the diff -u of each failed test case.
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| 13 | # DEBUG - Enable command tracing.
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| 14 | # SKIP - do not perform this test (this is set by "optional")
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| 15 | #
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| 16 | # The "testing" function takes five arguments:
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| 17 | # $1) Test description
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| 18 | # $2) Command(s) to run. May have pipes, redirects, etc
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| 19 | # $3) Expected result on stdout
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| 20 | # $4) Data to be written to file "input"
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| 21 | # $5) Data to be written to stdin
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| 22 | #
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| 23 | # The exit value of testing is the exit value of $2 it ran.
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| 24 | #
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| 25 | # The environment variable "FAILCOUNT" contains a cumulative total of the
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| 26 | # number of failed tests.
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| 27 |
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| 28 | # The "optional" function is used to skip certain tests, ala:
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| 29 | # optional FEATURE_THINGY
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| 30 | #
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| 31 | # The "optional" function checks the environment variable "OPTIONFLAGS",
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| 32 | # which is either empty (in which case it always clears SKIP) or
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| 33 | # else contains a colon-separated list of features (in which case the function
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| 34 | # clears SKIP if the flag was found, or sets it to 1 if the flag was not found).
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| 35 |
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| 36 | export FAILCOUNT=0
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| 37 | export SKIP=
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| 38 |
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| 39 | # Helper for helpers. Oh my...
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| 40 |
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| 41 | test x"$ECHO" != x"" || {
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| 42 | ECHO="echo"
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| 43 | test x"`echo -ne`" = x"" || {
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| 44 | # Compile and use a replacement 'echo' which understands -e -n
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| 45 | ECHO="$PWD/echo-ne"
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| 46 | test -x "$ECHO" || {
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| 47 | gcc -Os -o "$ECHO" ../scripts/echo.c || exit 1
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| 48 | }
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| 49 | }
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| 50 | export ECHO
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| 51 | }
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| 52 |
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| 53 | # Helper functions
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| 54 |
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| 55 | optional()
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| 56 | {
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| 57 | SKIP=
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| 58 | while test "$1"; do
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| 59 | if test x"${OPTIONFLAGS/*:$1:*/y}" != x"y"; then
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| 60 | SKIP=1
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| 61 | return
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| 62 | fi
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| 63 | shift
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| 64 | done
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| 65 | }
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| 66 |
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| 67 | # The testing function
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| 68 |
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| 69 | testing()
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| 70 | {
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| 71 | NAME="$1"
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| 72 | [ -n "$1" ] || NAME="$2"
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| 73 |
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| 74 | if [ $# -ne 5 ]
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| 75 | then
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| 76 | echo "Test $NAME has wrong number of arguments: $# (must be 5)" >&2
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| 77 | exit 1
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| 78 | fi
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| 79 |
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| 80 | [ -z "$DEBUG" ] || set -x
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| 81 |
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| 82 | if [ -n "$SKIP" ]
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| 83 | then
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| 84 | echo "SKIPPED: $NAME"
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| 85 | return 0
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| 86 | fi
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| 87 |
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| 88 | $ECHO -ne "$3" > expected
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| 89 | $ECHO -ne "$4" > input
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| 90 | [ -z "$VERBOSE" ] || echo "echo -ne '$4' >input"
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| 91 | [ -z "$VERBOSE" ] || echo "echo -ne '$5' | $2"
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| 92 | $ECHO -ne "$5" | eval "$2" > actual
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| 93 | RETVAL=$?
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| 94 |
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| 95 | if cmp expected actual >/dev/null 2>/dev/null
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| 96 | then
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| 97 | echo "PASS: $NAME"
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| 98 | else
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| 99 | FAILCOUNT=$(($FAILCOUNT + 1))
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| 100 | echo "FAIL: $NAME"
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| 101 | [ -z "$VERBOSE" ] || diff -u expected actual
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| 102 | fi
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| 103 | rm -f input expected actual
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| 104 |
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| 105 | [ -z "$DEBUG" ] || set +x
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| 106 |
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| 107 | return $RETVAL
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| 108 | }
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| 109 |
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| 110 | # Recursively grab an executable and all the libraries needed to run it.
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| 111 | # Source paths beginning with / will be copied into destpath, otherwise
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| 112 | # the file is assumed to already be there and only its library dependencies
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| 113 | # are copied.
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| 114 |
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| 115 | mkchroot()
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| 116 | {
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| 117 | [ $# -lt 2 ] && return
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| 118 |
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| 119 | $ECHO -n .
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| 120 |
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| 121 | dest=$1
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| 122 | shift
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| 123 | for i in "$@"
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| 124 | do
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| 125 | #bashism: [ "${i:0:1}" == "/" ] || i=$(which $i)
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| 126 | i=$(which $i) # no-op for /bin/prog
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| 127 | [ -f "$dest/$i" ] && continue
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| 128 | if [ -e "$i" ]
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| 129 | then
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| 130 | d=`echo "$i" | grep -o '.*/'` &&
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| 131 | mkdir -p "$dest/$d" &&
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| 132 | cat "$i" > "$dest/$i" &&
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| 133 | chmod +x "$dest/$i"
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| 134 | else
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| 135 | echo "Not found: $i"
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| 136 | fi
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| 137 | mkchroot "$dest" $(ldd "$i" | egrep -o '/.* ')
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| 138 | done
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| 139 | }
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| 140 |
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| 141 | # Set up a chroot environment and run commands within it.
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| 142 | # Needed commands listed on command line
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| 143 | # Script fed to stdin.
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| 144 |
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| 145 | dochroot()
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| 146 | {
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| 147 | mkdir tmpdir4chroot
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| 148 | mount -t ramfs tmpdir4chroot tmpdir4chroot
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| 149 | mkdir -p tmpdir4chroot/{etc,sys,proc,tmp,dev}
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| 150 | cp -L testing.sh tmpdir4chroot
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| 151 |
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| 152 | # Copy utilities from command line arguments
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| 153 |
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| 154 | $ECHO -n "Setup chroot"
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| 155 | mkchroot tmpdir4chroot $*
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| 156 | echo
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| 157 |
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| 158 | mknod tmpdir4chroot/dev/tty c 5 0
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| 159 | mknod tmpdir4chroot/dev/null c 1 3
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| 160 | mknod tmpdir4chroot/dev/zero c 1 5
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| 161 |
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| 162 | # Copy script from stdin
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| 163 |
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| 164 | cat > tmpdir4chroot/test.sh
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| 165 | chmod +x tmpdir4chroot/test.sh
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| 166 | chroot tmpdir4chroot /test.sh
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| 167 | umount -l tmpdir4chroot
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| 168 | rmdir tmpdir4chroot
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| 169 | }
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