#!/bin/bash
#
# Copyright (C) 2007 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Set up prog to be the path of this script, including following symlinks,
# and set up progdir to be the fully-qualified pathname of its directory.
prog="$0"
while [ -h "${prog}" ]; do
    newProg=`/bin/ls -ld "${prog}"`
    newProg=`expr "${newProg}" : ".* -> \(.*\)$"`
    if expr "x${newProg}" : 'x/' >/dev/null; then
        prog="${newProg}"
    else
        progdir=`dirname "${prog}"`
        prog="${progdir}/${newProg}"
    fi
done
oldwd=`pwd`
progdir=`dirname "${prog}"`
cd "${progdir}"
progdir=`pwd`
prog="${progdir}"/`basename "${prog}"`

info="info.txt"
run="run"
expected="expected.txt"
output="out.txt"
skip="SKIP"

dev_mode="no"
if [ "x$1" = "x--dev" ]; then
    dev_mode="yes"
    shift
fi

update_mode="no"
if [ "x$1" = "x--update" ]; then
    update_mode="yes"
    shift
fi

usage="no"
if [ "x$1" = "x--help" ]; then
    usage="yes"
else
    if [ "x$1" = "x" ]; then
        testdir=`basename "$oldwd"`
    else
        testdir="$1"
    fi

    if [ '!' -d "$testdir" ]; then
        td2=`echo ${testdir}-*`
        if [ '!' -d "$td2" ]; then
            echo "${testdir}: no such test directory" 1>&2
            usage="yes"
        fi
        testdir="$td2"
    fi
fi

if [ "$usage" = "yes" ]; then
    prog=`basename $prog`
    (
        echo "usage:"
        echo "  $prog --help             Print this message."
        echo "  $prog testname           Run test normally."
        echo "  $prog --dev testname     Development mode (dump to stdout)."
        echo "  $prog --update testname  Update mode (replace expected.txt)."
        echo "  Omitting the test name uses the current directory as the test."
    ) 1>&2
    exit 1
fi

td_info="$testdir"/"$info"
td_run="$testdir"/"$run"
td_expected="$testdir"/"$expected"
td_skip="$testdir"/"$skip"

if [ -r "$td_skip" ]; then
    exit 2
fi

tmpdir=/tmp/test-$$

if [ '!' '(' -r "$td_info" -a -r "$td_run" -a -r "$td_expected" ')' ]; then
    echo "${testdir}: missing files" 1>&2
    exit 1
fi

# copy the test to a temp dir and run it

echo "${testdir}: running..." 1>&2

rm -rf "$tmpdir"
cp -Rp "$testdir" "$tmpdir"
cd "$tmpdir"
chmod 755 "$run"

#PATH="${progdir}/../build/bin:${PATH}"

good="no"
if [ "$dev_mode" = "yes" ]; then
    "./$run" 2>&1
    echo "exit status: $?" 1>&2
    good="yes"
elif [ "$update_mode" = "yes" ]; then
    "./$run" >"${progdir}/$td_expected" 2>&1
    good="yes"
else
    "./$run" >"$output" 2>&1
    cmp -s "$expected" "$output"
    if [ "$?" = "0" ]; then
        # output == expected
        good="yes"
        echo "$testdir"': succeeded!' 1>&2
    fi
fi

if [ "$good" = "yes" ]; then
    cd "$oldwd"
    rm -rf "$tmpdir"
    exit 0
fi

(
    echo "${testdir}: FAILED!"
    echo ' '
    echo '#################### info'
    cat "$info" | sed 's/^/# /g'
    echo '#################### diffs'
    diff -u "$expected" "$output"
    echo '####################'
    echo ' '
    echo "files left in $tmpdir"
) 1>&2

exit 1