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#!/bin/sh

# ftracetest - Ftrace test shell scripts
#
# Copyright (C) Hitachi Ltd., 2014
#  Written by Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
#
# Released under the terms of the GPL v2.

usage() { # errno [message]
[ "$2" ] && echo $2
echo "Usage: ftracetest [options] [testcase(s)] [testcase-directory(s)]"
echo " Options:"
echo "		-h|--help  Show help message"
echo "		-k|--keep  Keep passed test logs"
echo "		-d|--debug Debug mode (trace all shell commands)"
exit $1
}

errexit() { # message
  echo "Error: $1" 1>&2
  exit 1
}

# Ensuring user privilege
if [ `id -u` -ne 0 ]; then
  errexit "this must be run by root user"
fi

# Utilities
absdir() { # file_path
  (cd `dirname $1`; pwd)
}

abspath() {
  echo `absdir $1`/`basename $1`
}

find_testcases() { #directory
  echo `find $1 -name \*.tc`
}

parse_opts() { # opts
  local OPT_TEST_CASES=
  local OPT_TEST_DIR=

  while [ "$1" ]; do
    case "$1" in
    --help|-h)
      usage 0
    ;;
    --keep|-k)
      KEEP_LOG=1
      shift 1
    ;;
    --debug|-d)
      DEBUG=1
      shift 1
    ;;
    *.tc)
      if [ -f "$1" ]; then
        OPT_TEST_CASES="$OPT_TEST_CASES `abspath $1`"
        shift 1
      else
        usage 1 "$1 is not a testcase"
      fi
      ;;
    *)
      if [ -d "$1" ]; then
        OPT_TEST_DIR=`abspath $1`
        OPT_TEST_CASES="$OPT_TEST_CASES `find_testcases $OPT_TEST_DIR`"
        shift 1
      else
        usage 1 "Invalid option ($1)"
      fi
    ;;
    esac
  done
  if [ "$OPT_TEST_CASES" ]; then
    TEST_CASES=$OPT_TEST_CASES
  fi
}

# Parameters
DEBUGFS_DIR=`grep debugfs /proc/mounts | cut -f2 -d' '`
TRACING_DIR=$DEBUGFS_DIR/tracing
TOP_DIR=`absdir $0`
TEST_DIR=$TOP_DIR/test.d
TEST_CASES=`find_testcases $TEST_DIR`
LOG_DIR=$TOP_DIR/logs/`date +%Y%m%d-%H%M%S`/
KEEP_LOG=0
DEBUG=0
# Parse command-line options
parse_opts $*

[ $DEBUG -ne 0 ] && set -x

# Verify parameters
if [ -z "$DEBUGFS_DIR" -o ! -d "$TRACING_DIR" ]; then
  errexit "No ftrace directory found"
fi

# Preparing logs
LOG_FILE=$LOG_DIR/ftracetest.log
mkdir -p $LOG_DIR || errexit "Failed to make a log directory: $LOG_DIR"
date > $LOG_FILE
prlog() { # messages
  echo "$@" | tee -a $LOG_FILE
}
catlog() { #file
  cat $1 | tee -a $LOG_FILE
}
prlog "=== Ftrace unit tests ==="


# Testcase management
PASSED_CASES=
FAILED_CASES=
CASENO=0
testcase() { # testfile
  CASENO=$((CASENO+1))
  prlog -n "[$CASENO]"`grep "^#[ \t]*description:" $1 | cut -f2 -d:`
}
failed() {
  prlog "	[FAIL]"
  FAILED_CASES="$FAILED_CASES $CASENO"
}
passed() {
  prlog "	[PASS]"
  PASSED_CASES="$PASSED_CASES $CASENO"
}


# Run one test case
run_test() { # testfile
  local testname=`basename $1`
  local testlog=`mktemp --tmpdir=$LOG_DIR ${testname}-XXXXXX.log`
  testcase $1
  echo "execute: "$1 > $testlog
  (cd $TRACING_DIR; set -x ; . $1) >> $testlog 2>&1
  ret=$?
  if [ $ret -ne 0 ]; then
    failed
    catlog $testlog
  else
    passed
    [ $KEEP_LOG -eq 0 ] && rm $testlog
  fi
}

# Main loop
for t in $TEST_CASES; do
  run_test $t
done
prlog ""
prlog "# of passed: " `echo $PASSED_CASES | wc -w`
prlog "# of failed: " `echo $FAILED_CASES | wc -w`

test -z "$FAILED_CASES" # if no error, return 0