busybox/testsuite/testing.sh

# 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 "optional"
# and a couple more...

# 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 "optional")
#
# The "testing" function takes five arguments:
#	$1) Test description
#	$2) Command(s) to run. May have pipes, redirects, etc
#	$3) Expected result on stdout
#	$4) Data to be written to file "input"
#	$5) Data to be written to stdin
#
# The exit value of testing is the exit value of $2 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:
#   optional 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=`echo ":$OPTIONFLAGS:" | grep ":$1:"`
  # Not set?
  if [ -z "$1" ] || [ -z "$OPTIONFLAGS" ] || [ ${#option} -ne 0 ]
  then
    SKIP=
    return
  fi
  SKIP=1
}

# The testing function

testing()
{
  NAME="$1"
  [ -n "$1" ] || NAME="$2"

  if [ $# -ne 5 ]
  then
    echo "Test $NAME has wrong number of arguments (must be 5) ($# $*)" >&2
    exit 1
  fi

  [ -z "$DEBUG" ] || set -x

  if [ -n "$SKIP" ]
  then
    echo "SKIPPED: $NAME"
    return 0
  fi

  $ECHO -ne "$3" > expected
  $ECHO -ne "$4" > input
  [ -z "$VERBOSE" ] || echo "echo '$5' | $2"
  $ECHO -ne "$5" | eval "$2" > actual
  RETVAL=$?

  if cmp expected actual >/dev/null 2>/dev/null
  then
    echo "PASS: $NAME"
  else
    FAILCOUNT=$(($FAILCOUNT + 1))
    echo "FAIL: $NAME"
    [ -z "$VERBOSE" ] || diff -u expected actual
  fi
  rm -f input expected actual

  [ -z "$DEBUG" ] || set +x

  return $RETVAL
}

# Recursively grab an executable and all the libraries needed to run it.
# Source paths beginning with / will be copied into destpath, otherwise
# the file is assumed to already be there and only its library dependencies
# are copied.

mkchroot()
{
  [ $# -lt 2 ] && return

  $ECHO -n .

  dest=$1
  shift
  for i in "$@"
  do
    #bashism: [ "${i:0:1}" == "/" ] || i=$(which $i)
    i=$(which $i) # no-op for /bin/prog
    [ -f "$dest/$i" ] && continue
    if [ -e "$i" ]
    then
      d=`echo "$i" | grep -o '.*/'` &&
      mkdir -p "$dest/$d" &&
      cat "$i" > "$dest/$i" &&
      chmod +x "$dest/$i"
    else
      echo "Not found: $i"
    fi
    mkchroot "$dest" $(ldd "$i" | egrep -o '/.* ')
  done
}

# Set up a chroot environment and run commands within it.
# Needed commands listed on command line
# Script fed to stdin.

dochroot()
{
  mkdir tmpdir4chroot
  mount -t ramfs tmpdir4chroot tmpdir4chroot
  mkdir -p tmpdir4chroot/{etc,sys,proc,tmp,dev}
  cp -L testing.sh tmpdir4chroot

  # Copy utilities from command line arguments

  $ECHO -n "Setup chroot"
  mkchroot tmpdir4chroot $*
  echo

  mknod tmpdir4chroot/dev/tty c 5 0
  mknod tmpdir4chroot/dev/null c 1 3
  mknod tmpdir4chroot/dev/zero c 1 5

  # Copy script from stdin

  cat > tmpdir4chroot/test.sh
  chmod +x tmpdir4chroot/test.sh
  chroot tmpdir4chroot /test.sh
  umount -l tmpdir4chroot
  rmdir tmpdir4chroot
}
1	niro	532	# Simple test harness infrastructurei for BusyBox
2			#
3			# Copyright 2005 by Rob Landley
4			#
5			# License is GPLv2, see LICENSE in the busybox tarball for full license text.
6
7	niro	816	# This file defines two functions, "testing" and "optional"
8			# and a couple more...
9	niro	532
10			# The following environment variables may be set to enable optional behavior
11			# in "testing":
12			# VERBOSE - Print the diff -u of each failed test case.
13			# DEBUG - Enable command tracing.
14	niro	816	# SKIP - do not perform this test (this is set by "optional")
15	niro	532	#
16			# The "testing" function takes five arguments:
17	niro	816	# $1) Test description
18			# $2) Command(s) to run. May have pipes, redirects, etc
19			# $3) Expected result on stdout
20			# $4) Data to be written to file "input"
21			# $5) Data to be written to stdin
22	niro	532	#
23	niro	816	# The exit value of testing is the exit value of $2 it ran.
24	niro	532	#
25			# The environment variable "FAILCOUNT" contains a cumulative total of the
26			# number of failed tests.
27
28			# The "optional" function is used to skip certain tests, ala:
29	niro	816	# optional CONFIG_FEATURE_THINGY
30	niro	532	#
31			# The "optional" function checks the environment variable "OPTIONFLAGS",
32			# which is either empty (in which case it always clears SKIP) or
33			# else contains a colon-separated list of features (in which case the function
34			# clears SKIP if the flag was found, or sets it to 1 if the flag was not found).
35
36			export FAILCOUNT=0
37			export SKIP=
38
39			# Helper functions
40
41			optional()
42			{
43	niro	816	option=`echo ":$OPTIONFLAGS:" \| grep ":$1:"`
44	niro	532	# Not set?
45			if [ -z "$1" ] \|\| [ -z "$OPTIONFLAGS" ] \|\| [ ${#option} -ne 0 ]
46			then
47	niro	816	SKIP=
48	niro	532	return
49			fi
50			SKIP=1
51			}
52
53			# The testing function
54
55	niro	816	testing()
56	niro	532	{
57			NAME="$1"
58	niro	816	[ -n "$1" ] \|\| NAME="$2"
59	niro	532
60			if [ $# -ne 5 ]
61			then
62	niro	816	echo "Test $NAME has wrong number of arguments (must be 5) ($# $*)" >&2
63			exit 1
64	niro	532	fi
65
66	niro	816	[ -z "$DEBUG" ] \|\| set -x
67	niro	532
68			if [ -n "$SKIP" ]
69			then
70			echo "SKIPPED: $NAME"
71			return 0
72			fi
73
74	niro	816	$ECHO -ne "$3" > expected
75			$ECHO -ne "$4" > input
76	niro	532	[ -z "$VERBOSE" ] \|\| echo "echo '$5' \| $2"
77	niro	816	$ECHO -ne "$5" \| eval "$2" > actual
78	niro	532	RETVAL=$?
79
80	niro	816	if cmp expected actual >/dev/null 2>/dev/null
81	niro	532	then
82	niro	816	echo "PASS: $NAME"
83			else
84			FAILCOUNT=$(($FAILCOUNT + 1))
85	niro	532	echo "FAIL: $NAME"
86	niro	816	[ -z "$VERBOSE" ] \|\| diff -u expected actual
87	niro	532	fi
88			rm -f input expected actual
89
90	niro	816	[ -z "$DEBUG" ] \|\| set +x
91	niro	532
92			return $RETVAL
93			}
94
95			# Recursively grab an executable and all the libraries needed to run it.
96			# Source paths beginning with / will be copied into destpath, otherwise
97			# the file is assumed to already be there and only its library dependencies
98			# are copied.
99
100	niro	816	mkchroot()
101	niro	532	{
102			[ $# -lt 2 ] && return
103
104	niro	816	$ECHO -n .
105	niro	532
106			dest=$1
107			shift
108			for i in "$@"
109			do
110	niro	816	#bashism: [ "${i:0:1}" == "/" ] \|\| i=$(which $i)
111			i=$(which $i) # no-op for /bin/prog
112	niro	532	[ -f "$dest/$i" ] && continue
113			if [ -e "$i" ]
114			then
115			d=`echo "$i" \| grep -o '.*/'` &&
116			mkdir -p "$dest/$d" &&
117			cat "$i" > "$dest/$i" &&
118			chmod +x "$dest/$i"
119			else
120			echo "Not found: $i"
121			fi
122			mkchroot "$dest" $(ldd "$i" \| egrep -o '/.* ')
123			done
124			}
125
126			# Set up a chroot environment and run commands within it.
127			# Needed commands listed on command line
128			# Script fed to stdin.
129
130	niro	816	dochroot()
131	niro	532	{
132			mkdir tmpdir4chroot
133			mount -t ramfs tmpdir4chroot tmpdir4chroot
134			mkdir -p tmpdir4chroot/{etc,sys,proc,tmp,dev}
135			cp -L testing.sh tmpdir4chroot
136
137			# Copy utilities from command line arguments
138
139	niro	816	$ECHO -n "Setup chroot"
140	niro	532	mkchroot tmpdir4chroot $*
141			echo
142
143			mknod tmpdir4chroot/dev/tty c 5 0
144			mknod tmpdir4chroot/dev/null c 1 3
145			mknod tmpdir4chroot/dev/zero c 1 5
146
147			# Copy script from stdin
148
149			cat > tmpdir4chroot/test.sh
150			chmod +x tmpdir4chroot/test.sh
151			chroot tmpdir4chroot /test.sh
152			umount -l tmpdir4chroot
153			rmdir tmpdir4chroot
154			}