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/*  Copyright (C) 2018 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <stdint.h>
#include <string.h>
#include <tap/basic.h>

#include "binary.h"
#include "error.h"

typedef struct test_string {
	const char *encoded;
	size_t encoded_size;
	const char *decoded;
	size_t decoded_size;
} test_string_t;

static void test_base64(void)
{
	test_string_t data[] = {
		{ "",         0, "",       0 },
		{ "YQ==",     4, "a",      1 },
		{ "YWI=",     4, "ab",     2 },
		{ "YWJj",     4, "abc",    3 },
		{ "YWJjZA==", 8, "abcd",   4 },
		{ "YWJjZGU=", 8, "abcde",  5 },
		{ "YWJjZGVm", 8, "abcdef", 6 },
		{ NULL }
	};

	for (int i = 0; data[i].encoded != NULL; i++) {
		test_string_t *ts = &data[i];

		const dnssec_binary_t base64 = {
			.size = ts->encoded_size,
			.data = (uint8_t *) ts->encoded
		};

		dnssec_binary_t binary = { 0 };

		int r = dnssec_binary_from_base64(&base64, &binary);
		ok(r == DNSSEC_EOK &&
		   binary.size == ts->decoded_size &&
		   (binary.size == 0 || memcmp(binary.data, ts->decoded, binary.size) == 0),
		   "dnssec_binary_from_base64() for '%s'", ts->encoded);

		dnssec_binary_t encoded = { 0 };
		r = dnssec_binary_to_base64(&binary, &encoded);
		ok(r == DNSSEC_EOK &&
		   encoded.size == ts->encoded_size &&
		   memcmp(encoded.data, ts->encoded, encoded.size) == 0,
		   "dnssec_binary_to_base64() for '%s'", ts->encoded);

		dnssec_binary_free(&binary);
		dnssec_binary_free(&encoded);
	}
}

static void test_dup(void)
{
	dnssec_binary_t src = { .size = 5, .data = (uint8_t *) "ahoj" };
	dnssec_binary_t dst = { 0 };

	int r = dnssec_binary_dup(&src, &dst);
	ok(r == DNSSEC_EOK &&
	   src.size == dst.size && memcmp(src.data, dst.data, src.size) == 0,
	   "dnssec_binary_dup()");

	dnssec_binary_free(&dst);
}

int main(void)
{
	plan_lazy();

	test_base64();
	test_dup();

	return 0;
}