/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

/* $Rev$ $Date$ */

/**
 * Test cache functions.
 */

#include <assert.h>
#include <sys/time.h>
#include <time.h>
#include <iostream>
#include <string>
#include <fstream>
#include "slist.hpp"
#include "cache.hpp"

namespace tuscany {
namespace cache {

const std::string fileRead(const std::string path) {
    std::ifstream is(path);
    return car(streamList(is));
}

bool testCache() {
    const std::string p("tmp/test.txt");
    const lambda<std::string(std::string)> fr(fileRead);
    const lambda<time_t(std::string)> ft(latestFileTime);

    const cached<std::string> c(curry(fr, p), curry(ft, p));

    {
        std::ofstream os(p);
        os << "initial";
        os.close();
        assert(std::string(latest(c)) == std::string("initial"));
    }

    usleep(1000000);

    {
        std::ofstream os(p);
        os << "updated";
        os.close();
        assert(latest(c) != c);
        assert(std::string(latest(c)) == std::string("updated"));
        assert(latest(c) == latest(c));
    }
    return true;
}

}
}

int main() {
    std::cout << "Testing..." << std::endl;

    tuscany::cache::testCache();

    std::cout << "OK" << std::endl;

    return 0;
}