169 lines
3.8 KiB
Bash
169 lines
3.8 KiB
Bash
# Simple test harness infrastructurei for BusyBox
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#
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# Copyright 2005 by Rob Landley
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#
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# License is GPLv2, see LICENSE in the busybox tarball for full license text.
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# This file defines two functions, "testing" and "optional"
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# and a couple more...
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# The following environment variables may be set to enable optional behavior
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# in "testing":
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# VERBOSE - Print the diff -u of each failed test case.
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# DEBUG - Enable command tracing.
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# SKIP - do not perform this test (this is set by "optional")
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#
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# The "testing" function takes five arguments:
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# $1) Test description
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# $2) Command(s) to run. May have pipes, redirects, etc
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# $3) Expected result on stdout
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# $4) Data to be written to file "input"
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# $5) Data to be written to stdin
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#
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# The exit value of testing is the exit value of $2 it ran.
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#
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# The environment variable "FAILCOUNT" contains a cumulative total of the
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# number of failed tests.
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# The "optional" function is used to skip certain tests, ala:
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# optional CONFIG_FEATURE_THINGY
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#
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# The "optional" function checks the environment variable "OPTIONFLAGS",
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# which is either empty (in which case it always clears SKIP) or
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# else contains a colon-separated list of features (in which case the function
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# clears SKIP if the flag was found, or sets it to 1 if the flag was not found).
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export FAILCOUNT=0
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export SKIP=
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# Helper for helpers. Oh my...
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test x"$ECHO" != x"" || {
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ECHO="echo"
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test x"`echo -ne`" = x"" || {
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# Compile and use a replacement 'echo' which understands -e -n
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ECHO="$PWD/echo-ne"
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test -x "$ECHO" || {
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gcc -Os -o "$ECHO" ../scripts/echo.c || exit 1
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}
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}
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export ECHO
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}
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# Helper functions
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optional()
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{
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SKIP=
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while test "$1"; do
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if test x"${OPTIONFLAGS/*:$1:*/y}" != x"y"; then
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SKIP=1
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return
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fi
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shift
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done
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}
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# The testing function
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testing()
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{
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NAME="$1"
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[ -n "$1" ] || NAME="$2"
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if [ $# -ne 5 ]
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then
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echo "Test $NAME has wrong number of arguments: $# (must be 5)" >&2
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exit 1
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fi
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[ -z "$DEBUG" ] || set -x
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if [ -n "$SKIP" ]
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then
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echo "SKIPPED: $NAME"
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return 0
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fi
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$ECHO -ne "$3" > expected
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$ECHO -ne "$4" > input
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[ -z "$VERBOSE" ] || echo "echo -ne '$5' | $2"
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$ECHO -ne "$5" | eval "$2" > actual
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RETVAL=$?
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if cmp expected actual >/dev/null 2>/dev/null
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then
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echo "PASS: $NAME"
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else
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FAILCOUNT=$(($FAILCOUNT + 1))
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echo "FAIL: $NAME"
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[ -z "$VERBOSE" ] || diff -u expected actual
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fi
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rm -f input expected actual
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[ -z "$DEBUG" ] || set +x
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return $RETVAL
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}
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# Recursively grab an executable and all the libraries needed to run it.
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# Source paths beginning with / will be copied into destpath, otherwise
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# the file is assumed to already be there and only its library dependencies
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# are copied.
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mkchroot()
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{
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[ $# -lt 2 ] && return
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$ECHO -n .
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dest=$1
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shift
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for i in "$@"
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do
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#bashism: [ "${i:0:1}" == "/" ] || i=$(which $i)
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i=$(which $i) # no-op for /bin/prog
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[ -f "$dest/$i" ] && continue
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if [ -e "$i" ]
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then
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d=`echo "$i" | grep -o '.*/'` &&
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mkdir -p "$dest/$d" &&
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cat "$i" > "$dest/$i" &&
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chmod +x "$dest/$i"
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else
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echo "Not found: $i"
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fi
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mkchroot "$dest" $(ldd "$i" | egrep -o '/.* ')
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done
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}
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# Set up a chroot environment and run commands within it.
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# Needed commands listed on command line
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# Script fed to stdin.
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dochroot()
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{
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mkdir tmpdir4chroot
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mount -t ramfs tmpdir4chroot tmpdir4chroot
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mkdir -p tmpdir4chroot/{etc,sys,proc,tmp,dev}
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cp -L testing.sh tmpdir4chroot
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# Copy utilities from command line arguments
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$ECHO -n "Setup chroot"
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mkchroot tmpdir4chroot $*
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echo
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mknod tmpdir4chroot/dev/tty c 5 0
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mknod tmpdir4chroot/dev/null c 1 3
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mknod tmpdir4chroot/dev/zero c 1 5
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# Copy script from stdin
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cat > tmpdir4chroot/test.sh
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chmod +x tmpdir4chroot/test.sh
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chroot tmpdir4chroot /test.sh
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umount -l tmpdir4chroot
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rmdir tmpdir4chroot
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}
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