Revert 194560 "[SPDY] Replace SpdyIOBuffer with new SpdyBuffer c..."

trunk/src/net/spdy/spdy_read_queue_unittest.cc

-// Copyright (c) 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "net/spdy/spdy_read_queue.h"
-
-#include <algorithm>
-#include <cstddef>
-#include <string>
-
-#include "base/memory/scoped_ptr.h"
-#include "base/stl_util.h"
-#include "net/spdy/spdy_buffer.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace net {
-
-namespace {
-
-const char kData[] = "SPDY read queue test data.\0Some more data.";
-const size_t kDataSize = arraysize(kData);
-
-// Enqueues |data| onto |queue| in chunks of at most |max_buffer_size|
-// bytes.
-void EnqueueString(const std::string& data,
-                   size_t max_buffer_size,
-                   SpdyReadQueue* queue) {
-  ASSERT_GT(data.size(), 0u);
-  ASSERT_GT(max_buffer_size, 0u);
-  size_t old_total_size = queue->GetTotalSize();
-  for (size_t i = 0; i < data.size();) {
-    size_t buffer_size = std::min(data.size() - i, max_buffer_size);
-    queue->Enqueue(
-        scoped_ptr<SpdyBuffer>(new SpdyBuffer(data.data() + i, buffer_size)));
-    i += buffer_size;
-    EXPECT_FALSE(queue->IsEmpty());
-    EXPECT_EQ(old_total_size + i, queue->GetTotalSize());
-  }
-}
-
-// Dequeues all bytes in |queue| in chunks of at most
-// |max_buffer_size| bytes and returns the data as a string.
-std::string DrainToString(size_t max_buffer_size, SpdyReadQueue* queue) {
-  std::string data;
-
-  // Pad the buffer so we can detect out-of-bound writes.
-  size_t padding = std::max(static_cast<size_t>(4096), queue->GetTotalSize());
-  size_t buffer_size_with_padding = padding + max_buffer_size + padding;
-  scoped_ptr<char[]> buffer(new char[buffer_size_with_padding]);
-  std::memset(buffer.get(), 0, buffer_size_with_padding);
-  char* buffer_data = buffer.get() + padding;
-
-  while (!queue->IsEmpty()) {
-    size_t old_total_size = queue->GetTotalSize();
-    EXPECT_GT(old_total_size, 0u);
-    size_t dequeued_bytes = queue->Dequeue(buffer_data, max_buffer_size);
-
-    // Make sure |queue| doesn't write past either end of its given
-    // boundaries.
-    for (int i = 1; i <= static_cast<int>(padding); ++i) {
-      EXPECT_EQ('\0', buffer_data[-i]) << -i;
-    }
-    for (size_t i = 0; i < padding; ++i) {
-      EXPECT_EQ('\0', buffer_data[max_buffer_size + i]) << i;
-    }
-
-    data.append(buffer_data, dequeued_bytes);
-    EXPECT_EQ(dequeued_bytes, std::min(max_buffer_size, dequeued_bytes));
-    EXPECT_EQ(queue->GetTotalSize(), old_total_size - dequeued_bytes);
-  }
-  EXPECT_TRUE(queue->IsEmpty());
-  return data;
-}
-
-// Enqueue a test string with the given enqueue/dequeue max buffer
-// sizes.
-void RunEnqueueDequeueTest(size_t enqueue_max_buffer_size,
-                           size_t dequeue_max_buffer_size) {
-  std::string data(kData, kDataSize);
-  SpdyReadQueue read_queue;
-  EnqueueString(data, enqueue_max_buffer_size, &read_queue);
-  const std::string& drained_data =
-      DrainToString(dequeue_max_buffer_size, &read_queue);
-  EXPECT_EQ(data, drained_data);
-}
-
-class SpdyReadQueueTest : public ::testing::Test {};
-
-// Call RunEnqueueDequeueTest() with various buffer size combinatinos.
-
-TEST_F(SpdyReadQueueTest, LargeEnqueueAndDequeueBuffers) {
-  RunEnqueueDequeueTest(2 * kDataSize, 2 * kDataSize);
-}
-
-TEST_F(SpdyReadQueueTest, OneByteEnqueueAndDequeueBuffers) {
-  RunEnqueueDequeueTest(1, 1);
-}
-
-TEST_F(SpdyReadQueueTest, CoprimeBufferSizes) {
-  RunEnqueueDequeueTest(2, 3);
-  RunEnqueueDequeueTest(3, 2);
-}
-
-}  // namespace
-
-}  // namespace net