//
// Automated Testing Framework (atf)
//
// Copyright (c) 2009, 2010 The NetBSD Foundation, Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
// 2. 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.
//
// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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// IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//

#if defined(TESTS_ATF_ATF_CXX_TEST_HELPERS_H)
#   error "Cannot include test_helpers.hpp more than once."
#else
#   define TESTS_ATF_ATF_CXX_TEST_HELPERS_H
#endif

#include <cstdlib>
#include <iostream>
#include <sstream>
#include <utility>

#include "../macros.hpp"
#include "../tests.hpp"
#include "parser.hpp"
#include "process.hpp"
#include "text.hpp"

#define HEADER_TC(name, hdrname) \
    ATF_TEST_CASE(name); \
    ATF_TEST_CASE_HEAD(name) \
    { \
        set_md_var("descr", "Tests that the " hdrname " file can be " \
            "included on its own, without any prerequisites"); \
    } \
    ATF_TEST_CASE_BODY(name) \
    { \
        header_check(*this, hdrname); \
    }

#define BUILD_TC(name, sfile, descr, failmsg) \
    ATF_TEST_CASE(name); \
    ATF_TEST_CASE_HEAD(name) \
    { \
        set_md_var("descr", descr); \
    } \
    ATF_TEST_CASE_BODY(name) \
    { \
        build_check_cxx_o(*this, sfile, failmsg); \
    }

namespace atf {
namespace tests {
class tc;
}
}

void header_check(const atf::tests::tc&, const char*);
void build_check_cxx_o(const atf::tests::tc&, const char*, const char*);
atf::fs::path get_process_helpers_path(const atf::tests::tc&);
bool grep_file(const char*, const char*);
bool grep_string(const std::string&, const char*);

struct run_h_tc_data {
    const atf::tests::vars_map& m_config;

    run_h_tc_data(const atf::tests::vars_map& config) :
        m_config(config) {}
};

template< class TestCase >
void
run_h_tc_child(void* v)
{
    run_h_tc_data* data = static_cast< run_h_tc_data* >(v);

    TestCase tc;
    tc.init(data->m_config);
    tc.run("result");
    std::exit(EXIT_SUCCESS);
}

template< class TestCase >
void
run_h_tc(atf::tests::vars_map config = atf::tests::vars_map())
{
    run_h_tc_data data(config);
    atf::process::child c = atf::process::fork(
        run_h_tc_child< TestCase >,
        atf::process::stream_redirect_path(atf::fs::path("stdout")),
        atf::process::stream_redirect_path(atf::fs::path("stderr")),
        &data);
    const atf::process::status s = c.wait();
    ATF_REQUIRE(s.exited());
}

namespace test_helpers_detail {

typedef std::vector< std::string > string_vector;

template< class Reader >
std::pair< string_vector, string_vector >
do_read(const char* input)
{
    string_vector errors;

    std::istringstream is(input);
    Reader reader(is);
    try {
        reader.read();
    } catch (const atf::parser::parse_errors& pes) {
        for (std::vector< atf::parser::parse_error >::const_iterator iter =
             pes.begin(); iter != pes.end(); iter++)
            errors.push_back(*iter);
    } catch (const atf::parser::parse_error& pe) {
        ATF_FAIL("Raised a lonely parse error: " +
                 atf::text::to_string(pe.first) + ": " + pe.second);
    }

    return std::make_pair(reader.m_calls, errors);
}

void check_equal(const char*[], const string_vector&);

} // namespace test_helpers_detail

template< class Reader >
void
do_parser_test(const char* input, const char* exp_calls[],
               const char* exp_errors[])
{
    const std::pair< test_helpers_detail::string_vector,
                     test_helpers_detail::string_vector >
        actual = test_helpers_detail::do_read< Reader >(input);
    test_helpers_detail::check_equal(exp_calls, actual.first);
    test_helpers_detail::check_equal(exp_errors, actual.second);
}