// Copyright 2011 The Kyua Authors.

// All rights reserved.

//

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

//

// * Redistributions of source code must retain the above copyright

//   notice, this list of conditions and the following disclaimer.

// * Redistributions in binary form must reproduce the above copyright

//   notice, this list of conditions and the following disclaimer in the

//   documentation and/or other materials provided with the distribution.

// * Neither the name of Google Inc. nor the names of its contributors

//   may be used to endorse or promote products derived from this software

//   without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#include "utils/stream.hpp"

#include <cstdlib>

#include <sstream>

#include <atf-c++.hpp>

#include "utils/fs/path.hpp"

namespace fs = utils::fs;

ATF_TEST_CASE_WITHOUT_HEAD(open_ostream__stdout);

ATF_TEST_CASE_BODY(open_ostream__stdout)

{

    const pid_t pid = atf::utils::fork();

    if (pid == 0) {

        std::auto_ptr< std::ostream > output = utils::open_ostream(

            fs::path("/dev/stdout"));

        (*output) << "Message to stdout\n";

        output.reset();

        std::exit(EXIT_SUCCESS);

    }

    atf::utils::wait(pid, EXIT_SUCCESS, "Message to stdout\n", "");

}

ATF_TEST_CASE_WITHOUT_HEAD(open_ostream__stderr);

ATF_TEST_CASE_BODY(open_ostream__stderr)

{

    const pid_t pid = atf::utils::fork();

    if (pid == 0) {

        std::auto_ptr< std::ostream > output = utils::open_ostream(

            fs::path("/dev/stderr"));

        (*output) << "Message to stderr\n";

        output.reset();

        std::exit(EXIT_SUCCESS);

    }

    atf::utils::wait(pid, EXIT_SUCCESS, "", "Message to stderr\n");

}

ATF_TEST_CASE_WITHOUT_HEAD(open_ostream__other);

ATF_TEST_CASE_BODY(open_ostream__other)

{

    const pid_t pid = atf::utils::fork();

    if (pid == 0) {

        std::auto_ptr< std::ostream > output = utils::open_ostream(

            fs::path("some-file.txt"));

        (*output) << "Message to other file\n";

        output.reset();

        std::exit(EXIT_SUCCESS);

    }

    atf::utils::wait(pid, EXIT_SUCCESS, "", "");

    atf::utils::compare_file("some-file.txt", "Message to other file\n");

}

ATF_TEST_CASE_WITHOUT_HEAD(stream_length__empty);

ATF_TEST_CASE_BODY(stream_length__empty)

{

    std::istringstream input("");

    ATF_REQUIRE_EQ(0, utils::stream_length(input));

}

ATF_TEST_CASE_WITHOUT_HEAD(stream_length__some);

ATF_TEST_CASE_BODY(stream_length__some)

{

    const std::string contents(8192, 'x');

    std::istringstream input(contents);

    ATF_REQUIRE_EQ(

        contents.length(),

        static_cast< std::string::size_type >(utils::stream_length(input)));

}

ATF_TEST_CASE_WITHOUT_HEAD(read_file__ok);

ATF_TEST_CASE_BODY(read_file__ok)

{

    const char* contents = "These are\nsome file contents";

    atf::utils::create_file("input.txt", contents);

    ATF_REQUIRE_EQ(contents, utils::read_file(fs::path("input.txt")));

}

ATF_TEST_CASE_WITHOUT_HEAD(read_file__missing_file);

ATF_TEST_CASE_BODY(read_file__missing_file)

{

    ATF_REQUIRE_THROW_RE(std::runtime_error,

                         "Failed to open 'foo.txt' for read",

                         utils::read_file(fs::path("foo.txt")));

}

ATF_TEST_CASE_WITHOUT_HEAD(read_stream__empty);

ATF_TEST_CASE_BODY(read_stream__empty)

{

    std::istringstream input("");

    ATF_REQUIRE_EQ("", utils::read_stream(input));

}

ATF_TEST_CASE_WITHOUT_HEAD(read_stream__some);

ATF_TEST_CASE_BODY(read_stream__some)

{

    std::string contents;

    for (int i = 0; i < 1000; i++)

        contents += "abcdef";

    std::istringstream input(contents);

    ATF_REQUIRE_EQ(contents, utils::read_stream(input));

}

ATF_INIT_TEST_CASES(tcs)

{

    ATF_ADD_TEST_CASE(tcs, open_ostream__stdout);

    ATF_ADD_TEST_CASE(tcs, open_ostream__stderr);

    ATF_ADD_TEST_CASE(tcs, open_ostream__other);

    ATF_ADD_TEST_CASE(tcs, stream_length__empty);

    ATF_ADD_TEST_CASE(tcs, stream_length__some);

    ATF_ADD_TEST_CASE(tcs, read_file__ok);

    ATF_ADD_TEST_CASE(tcs, read_file__missing_file);

    ATF_ADD_TEST_CASE(tcs, read_stream__empty);

    ATF_ADD_TEST_CASE(tcs, read_stream__some);

}