bounded_byte_reader_test.cc

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/*

 *  Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#include "net/dcsctp/packet/bounded_byte_reader.h"

#include "api/array_view.h"

#include "rtc_base/buffer.h"

#include "rtc_base/checks.h"

#include "rtc_base/gunit.h"

#include "test/gmock.h"

namespace dcsctp {

namespace {

using ::testing::ElementsAre;

TEST(BoundedByteReaderTest, CanLoadData) {

  uint8_t data[14] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4};

  BoundedByteReader<8> reader(data);

  EXPECT_EQ(reader.variable_data_size(), 6U);

  EXPECT_EQ(reader.Load32<0>(), 0x01020304U);

  EXPECT_EQ(reader.Load32<4>(), 0x05060708U);

  EXPECT_EQ(reader.Load16<4>(), 0x0506U);

  EXPECT_EQ(reader.Load8<4>(), 0x05U);

  EXPECT_EQ(reader.Load8<5>(), 0x06U);

  BoundedByteReader<6> sub = reader.sub_reader<6>(0);

  EXPECT_EQ(sub.Load16<0>(), 0x0900U);

  EXPECT_EQ(sub.Load32<0>(), 0x09000102U);

  EXPECT_EQ(sub.Load16<4>(), 0x0304U);

  EXPECT_THAT(reader.variable_data(), ElementsAre(9, 0, 1, 2, 3, 4));

}  // namespace

}  // namespace dcsctp