/*
 * Copyright (c) 2013, Google, Inc. All rights reserved
 *
 * 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.
 */
/*
 * Functions for unit tests.  See lib/unittest/include/unittest.h for usage.
 */
#include <unittest.h>
#include <debug.h>
#include <stdbool.h>
#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include <stdint.h>

/**
 * \brief Default function to dump unit test results
 *
 * \param[in] line is the buffer to dump
 * \param[in] len is the length of the buffer to dump
 * \param[in] arg can be any kind of arguments needed to dump the values
 */
static void default_printf (const char *line, int len, void *arg)
{
    printf (line);
}

// Default output function is the printf
static test_output_func out_func = default_printf;
// Buffer the argument to be sent to the output function
static void *out_func_arg = NULL;

/**
 * \brief Function called to dump results
 *
 * This function will call the out_func callback
 */
void unittest_printf (const char *format, ...)
{
    static char print_buffer[PRINT_BUFFER_SIZE];

    va_list argp;
    va_start (argp, format);

    if (out_func != NULL) {
        // Format the string
        vsnprintf(print_buffer, PRINT_BUFFER_SIZE, format, argp);
        out_func (print_buffer, PRINT_BUFFER_SIZE, out_func_arg);
    }

    va_end (argp);
}

bool expect_bytes_eq(const uint8_t *expected, const uint8_t *actual, size_t len,
                     const char *msg)
{
    if (memcmp(expected, actual, len)) {
        printf("%s. expected\n", msg);
        hexdump8(expected, len);
        printf("actual\n");
        hexdump8(actual, len);
        return false;
    }
    return true;
}

void unittest_set_output_function (test_output_func fun, void *arg)
{
    out_func = fun;
    out_func_arg = arg;
}