/*
 * Copyright 2016 Józef Kucia for CodeWeavers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#ifndef __VKD3D_TEST_H
#define __VKD3D_TEST_H

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static void vkd3d_test_main(void);
static const char *vkd3d_test_name;

#define START_TEST(name) static const char *vkd3d_test_name = #name; \
        static void vkd3d_test_main(void)

#ifdef __GNUC__
# define VKD3D_PRINTF_FUNC(fmt, args) __attribute__((format(printf, fmt, args)))
# define VKD3D_UNUSED __attribute__((unused))
#else
# define VKD3D_PRINTF_FUNC(fmt, args)
# define VKD3D_UNUSED
#endif  /* __GNUC__ */

#define ok ok_(__LINE__)
#define todo todo_(__LINE__)
#define skip skip_(__LINE__)
#define trace trace_(__LINE__)

#define ok_(line) \
    do { \
    unsigned int __line = line; \
    VKD3D_TEST_OK

#define VKD3D_TEST_OK(args...) \
    vkd3d_test_ok(__line, args); } while (0)

#define todo_(line) \
    do { \
    unsigned int __line = line; \
    VKD3D_TEST_TODO

#ifdef _WIN32
# define VKD3D_TEST_TODO(args...) \
    vkd3d_test_ok(__line, args); } while (0)
#else
# define VKD3D_TEST_TODO(args...) \
    vkd3d_test_todo(__line, args); } while (0)
#endif  /* _WIN32 */

#define skip_(line) \
    do { \
    unsigned int __line = line; \
    VKD3D_TEST_SKIP

#define VKD3D_TEST_SKIP(args...) \
    vkd3d_test_skip(__line, args); } while (0)

#define trace_(line) \
    do { \
    unsigned int __line = line; \
    VKD3D_TEST_TRACE

#define VKD3D_TEST_TRACE(args...) \
    vkd3d_test_trace(__line, args); } while (0)

static struct
{
    unsigned int success_count;
    unsigned int failure_count;
    unsigned int skip_count;
    unsigned int todo_count;
    unsigned int todo_success_count;

    unsigned int debug;
} vkd3d_test_state;

static void vkd3d_test_ok(unsigned int line,
        int result, const char *fmt, ...) VKD3D_PRINTF_FUNC(3, 4) VKD3D_UNUSED;
static void vkd3d_test_todo(unsigned int line,
        int result, const char *fmt, ...) VKD3D_PRINTF_FUNC(3, 4) VKD3D_UNUSED;
static void vkd3d_test_skip(unsigned int line,
        const char *fmt, ...) VKD3D_PRINTF_FUNC(2, 3) VKD3D_UNUSED;
static void vkd3d_test_trace(unsigned int line,
        const char *fmt, ...) VKD3D_PRINTF_FUNC(2, 3) VKD3D_UNUSED;

static void vkd3d_test_ok(unsigned int line, int result, const char *fmt, ...)
{
    if (result)
    {
        if (vkd3d_test_state.debug)
            printf("%s:%d: Test succeeded.\n", vkd3d_test_name, line);
        ++vkd3d_test_state.success_count;
    }
    else
    {
        va_list args;
        va_start(args, fmt);
        printf("%s:%d: Test failed: ", vkd3d_test_name, line);
        vprintf(fmt, args);
        va_end(args);
        ++vkd3d_test_state.failure_count;
    }
}

static void vkd3d_test_todo(unsigned int line, int result, const char *fmt, ...)
{
    va_list args;

    if (result)
    {
        printf("%s:%d Todo succeeded: ", vkd3d_test_name, line);
        ++vkd3d_test_state.todo_success_count;
    }
    else
    {
        printf("%s:%d: Todo: ", vkd3d_test_name, line);
        ++vkd3d_test_state.todo_count;
    }

    va_start(args, fmt);
    vprintf(fmt, args);
    va_end(args);
}

static void vkd3d_test_skip(unsigned int line, const char *fmt, ...)
{
    va_list args;
    va_start(args, fmt);
    printf("%s:%d: Test skipped: ", vkd3d_test_name, line);
    vprintf(fmt, args);
    va_end(args);
    ++vkd3d_test_state.skip_count;
}

static void vkd3d_test_trace(unsigned int line, const char *fmt, ...)
{
    va_list args;
    va_start(args, fmt);
    printf("%s:%d: ", vkd3d_test_name, line);
    vprintf(fmt, args);
    va_end(args);
}

int main(int argc, char **argv)
{
    const char *vkd3d_test_debug;

    memset(&vkd3d_test_state, 0, sizeof(vkd3d_test_state));

    vkd3d_test_state.debug = (vkd3d_test_debug = getenv("VKD3D_TEST_DEBUG"))
            && (*vkd3d_test_debug == 'y' || *vkd3d_test_debug == '1');

    vkd3d_test_main();

    printf("%s: %u tests executed (%u failures, %u skipped, %u todo).\n",
            vkd3d_test_name,
            vkd3d_test_state.success_count + vkd3d_test_state.failure_count
            + vkd3d_test_state.todo_count + vkd3d_test_state.todo_success_count,
            vkd3d_test_state.failure_count + vkd3d_test_state.todo_success_count,
            vkd3d_test_state.skip_count,
            vkd3d_test_state.todo_count);

    return vkd3d_test_state.failure_count || vkd3d_test_state.todo_success_count;
}

#endif  /* __VKD3D_TEST__H */