Split ByteBuffer into writer/reader objects.

webrtc/base/bitbuffer_unittest.cc

 /*
  *  Copyright 2015 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.
  */
 
@@ skipping 170 matching lines @@
   uint32_t bit_counter = val;
   uint64_t bit_count = 0;
   while (bit_counter > 0) {
     bit_count++;
     bit_counter >>= 1;
   }
   return static_cast<uint64_t>(val) << (64 - (bit_count * 2 - 1));
 }
 
 TEST(BitBufferTest, GolombUint32Values) {
-  ByteBuffer byteBuffer;
+  ByteBufferWriter byteBuffer;
   byteBuffer.Resize(16);
   BitBuffer buffer(reinterpret_cast<const uint8_t*>(byteBuffer.Data()),
                    byteBuffer.Capacity());
   // Test over the uint32_t range with a large enough step that the test doesn't
   // take forever. Around 20,000 iterations should do.
   const int kStep = std::numeric_limits<uint32_t>::max() / 20000;
   for (uint32_t i = 0; i < std::numeric_limits<uint32_t>::max() - kStep;
        i += kStep) {
     uint64_t encoded_val = GolombEncoded(i);
     byteBuffer.Clear();
@@ skipping 119 matching lines @@
   EXPECT_TRUE(buffer.WriteBits(0, 1));
   EXPECT_EQ(0xEFu, bytes[0]);
   EXPECT_TRUE(buffer.WriteBits(0, 3));
   EXPECT_EQ(0xE1u, bytes[0]);
   EXPECT_TRUE(buffer.WriteBits(0, 2));
   EXPECT_EQ(0xE0u, bytes[0]);
   EXPECT_EQ(0x7F, bytes[1]);
 }
 
 }  // namespace rtc