busybox/testsuite/testing.sh

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# Simple test harness infrastructurei for BusyBox
#
# Copyright 2005 by Rob Landley
#
# License is GPLv2, see LICENSE in the busybox tarball for full license text.
# This file defines two functions, "testing" and "optionflag"
# The "testing" function must have the following environment variable set:
# COMMAND = command to execute
#
# The following environment variables may be set to enable optional behavior
# in "testing":
# VERBOSE - Print the diff -u of each failed test case.
# DEBUG - Enable command tracing.
# SKIP - do not perform this test (this is set by "optionflag")
#
# The "testing" function takes five arguments:
# $1) Description to display when running command
# $2) Command line arguments to command"
# $3) Expected result (on stdout)"
# $4) Data written to file "input"
# $5) Data written to stdin
#
# The exit value of testing is the exit value of the command it ran.
#
# The environment variable "FAILCOUNT" contains a cumulative total of the
# number of failed tests.
# The "optional" function is used to skip certain tests, ala:
# optionflag CONFIG_FEATURE_THINGY
#
# The "optional" function checks the environment variable "OPTIONFLAGS",
# which is either empty (in which case it always clears SKIP) or
# else contains a colon-separated list of features (in which case the function
# clears SKIP if the flag was found, or sets it to 1 if the flag was not found).
export FAILCOUNT=0
export SKIP=
# Helper functions
optional()
{
option="$OPTIONFLAGS" | egrep "(^|:)$1(:|\$)"
# Not set?
if [[ -z "$1" || -z "$OPTIONFLAGS" || ${#option} -ne 0 ]]
then
SKIP=""
return
fi
SKIP=1
}
# The testing function
testing ()
{
if [ $# -ne 5 ]
then
echo "Test $1 has the wrong number of arguments" >&2
exit
fi
if [ -n "$DEBUG" ] ; then
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set -x
fi
if [ -n "$SKIP" ]
then
echo "SKIPPED: $1"
return 0
fi
echo -ne "$3" > expected
echo -ne "$4" > input
echo -n -e "$5" | eval "$COMMAND $2" > actual
RETVAL=$?
cmp expected actual > /dev/null
if [ $? -ne 0 ]
then
FAILCOUNT=$[$FAILCOUNT+1]
echo "FAIL: $1"
if [ -n "$VERBOSE" ]
then
diff -u expected actual
fi
else
echo "PASS: $1"
fi
rm -f input expected actual
if [ -n "$DEBUG" ]
then
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set +x
fi
return $RETVAL
}