[BlobAsync] Patch 4: Browser Classes & Logic.

content/browser/blob_storage/blob_async_transport_strategy_unittest.cc

+// Copyright 2015 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 "storage/browser/blob/blob_async_transport_strategy.h"
+
+#include "base/logging.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace storage {
+namespace {
+
+const std::string kNewUUID = "newUUID";
+const base::FilePath kFuturePopulatingFilePath("kFakeFilenameToBeChanged");
+const char* kFakeBlobUUID = "fakeBlob";
+
+static void AddMemoryItem(size_t length, std::vector<DataElement>* out) {
+  DataElement bytes;
+  bytes.SetToBytesDescription(length);
+  out->push_back(bytes);
+}
+
+static void AddShortcutMemoryItem(size_t length,
+                                  std::vector<DataElement>* out) {
+  DataElement bytes;
+  bytes.SetToAllocatedBytes(length);
+  for (size_t i = 0; i < length; i++) {
+    bytes.mutable_bytes()[i] = static_cast<char>(i);
+  }
+  out->push_back(bytes);
+}
+
+static void AddBlobItem(std::vector<DataElement>* out) {
+  DataElement blob;
+  blob.SetToBlob(kFakeBlobUUID);
+  out->push_back(blob);
+}
+
+TEST(BlobTransportStrategyTest, TestLargeBlockToFile) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // Here we test our size > max_blob_in_memory_size (300),
+  // and we save to one file. (size < max_file_size)
+  AddMemoryItem(305, &infos);
+  strategy.Initialize(100,   // max_ipc_memory_size
+                      200,   // max_shared_memory_size
+                      400,   // max_file_size
+                      5000,  // disk_space_left
+                      100,   // memory_available
+                      kNewUUID, infos);
+
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_NONE, strategy.error());
+
+  EXPECT_EQ(1u, strategy.file_handle_sizes().size());
+  EXPECT_EQ(305ul, strategy.file_handle_sizes().at(0));
+  EXPECT_EQ(1u, strategy.requests().size());
+
+  auto& memory_item_request = strategy.requests().at(0);
+  EXPECT_EQ(0u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(
+      BlobItemBytesRequest::CreateFileRequest(0u, 0u, 0ull, 305ull, 0u, 0ull),
+      memory_item_request.message);
+
+  BlobDataBuilder builder(kNewUUID);
+  builder.AppendFile(kFuturePopulatingFilePath, 0, 305,
+                     base::Time::FromDoubleT(0));
+  EXPECT_EQ(builder, *strategy.blob_builder());
+}
+
+TEST(BlobTransportStrategyTest, TestLargeBlockToFiles) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // Here we test our size > max_blob_in_memory_size (300),
+  // and we save 3 files. (size > max_file_size)
+  AddMemoryItem(1000, &infos);
+  strategy.Initialize(100,   // max_ipc_memory_size
+                      200,   // max_shared_memory_size
+                      400,   // max_file_size
+                      5000,  // disk_space_left
+                      100,   // memory_available
+                      kNewUUID, infos);
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_NONE, strategy.error());
+
+  EXPECT_EQ(3u, strategy.file_handle_sizes().size());
+  EXPECT_EQ(400ul, strategy.file_handle_sizes().at(0));
+  EXPECT_EQ(400ul, strategy.file_handle_sizes().at(1));
+  EXPECT_EQ(200ul, strategy.file_handle_sizes().at(2));
+  EXPECT_EQ(3u, strategy.requests().size());
+
+  auto memory_item_request = strategy.requests().at(0);
+  EXPECT_EQ(0u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(
+      BlobItemBytesRequest::CreateFileRequest(0u, 0u, 0ull, 400ull, 0u, 0ull),
+      memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(1);
+  EXPECT_EQ(1u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(
+      BlobItemBytesRequest::CreateFileRequest(1u, 0u, 400ull, 400ull, 1u, 0ull),
+      memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(2);
+  EXPECT_EQ(2u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(
+      BlobItemBytesRequest::CreateFileRequest(2u, 0u, 800ull, 200ull, 2u, 0ull),
+      memory_item_request.message);
+
+  BlobDataBuilder builder(kNewUUID);
+  builder.AppendFile(kFuturePopulatingFilePath, 0, 400,
+                     base::Time::FromDoubleT(0));
+  builder.AppendFile(kFuturePopulatingFilePath, 0, 400,
+                     base::Time::FromDoubleT(0));
+  builder.AppendFile(kFuturePopulatingFilePath, 0, 200,
+                     base::Time::FromDoubleT(0));
+  EXPECT_EQ(builder, *strategy.blob_builder());
+}
+
+TEST(BlobTransportStrategyTest, TestLargeBlocksConsolidatingInFiles) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // We should have 3 storage items for the memory, two files, 400 each.
+  // We end up with storage items:
+  // 1: File A, 300MB
+  // 2: Blob
+  // 3: File A, 100MB (300MB offset)
+  // 4: File B, 400MB
+  AddMemoryItem(300, &infos);
+  AddBlobItem(&infos);
+  AddMemoryItem(500, &infos);
+
+  strategy.Initialize(100,   // max_ipc_memory_size
+                      200,   // max_shared_memory_size
+                      400,   // max_file_size
+                      5000,  // disk_space_left
+                      100,   // memory_available
+                      kNewUUID, infos);
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_NONE, strategy.error());
+
+  EXPECT_EQ(2u, strategy.file_handle_sizes().size());
+  EXPECT_EQ(400ul, strategy.file_handle_sizes().at(0));
+  EXPECT_EQ(400ul, strategy.file_handle_sizes().at(1));
+  EXPECT_EQ(3u, strategy.requests().size());
+
+  auto memory_item_request = strategy.requests().at(0);
+  EXPECT_EQ(0u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(
+      BlobItemBytesRequest::CreateFileRequest(0u, 0u, 0ull, 300ull, 0u, 0ull),
+      memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(1);
+  EXPECT_EQ(2u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(
+      BlobItemBytesRequest::CreateFileRequest(1u, 2u, 0ull, 100ull, 0u, 300ull),
+      memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(2);
+  EXPECT_EQ(3u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(
+      BlobItemBytesRequest::CreateFileRequest(2u, 2u, 100ull, 400ull, 1u, 0ull),
+      memory_item_request.message);
+}
+
+TEST(BlobTransportStrategyTest, TestSharedMemorySegmentation) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // For transport we should have 3 shared memories, and then storage in 3
+  // browser items.
+  // (size > max_shared_memory_size and size < max_blob_in_memory_size
+  AddMemoryItem(500, &infos);
+  strategy.Initialize(100,   // max_ipc_memory_size
+                      200,   // max_shared_memory_size
+                      300,   // max_file_size
+                      5000,  // disk_space_left
+                      500,   // memory_available
+                      kNewUUID, infos);
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_NONE, strategy.error());
+
+  EXPECT_EQ(3u, strategy.shared_memory_handle_sizes().size());
+  EXPECT_EQ(200u, strategy.shared_memory_handle_sizes().at(0));
+  EXPECT_EQ(200u, strategy.shared_memory_handle_sizes().at(1));
+  EXPECT_EQ(100u, strategy.shared_memory_handle_sizes().at(2));
+  EXPECT_EQ(3u, strategy.requests().size());
+
+  auto memory_item_request = strategy.requests().at(0);
+  EXPECT_EQ(0u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateSharedMemoryRequest(0u, 0u, 0ull,
+                                                            200ull, 0u, 0ull),
+            memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(1);
+  EXPECT_EQ(1u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateSharedMemoryRequest(1u, 0u, 200ull,
+                                                            200ull, 1u, 0ull),
+            memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(2);
+  EXPECT_EQ(2u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateSharedMemoryRequest(2u, 0u, 400ull,
+                                                            100ull, 2u, 0ull),
+            memory_item_request.message);
+
+  BlobDataBuilder builder(kNewUUID);
+  builder.AppendFutureData(200);
+  builder.AppendFutureData(200);
+  builder.AppendFutureData(100);
+
+  EXPECT_EQ(builder, *strategy.blob_builder());
+}
+
+TEST(BlobTransportStrategyTest, TestSharedMemorySegmentationAndStorage) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // For transport, we should have 2 shared memories, where the first one
+  // have half 0 and half 3, and then the last one has half 3.
+  //
+  // For storage, we should have 3 browser items that match the pre-transport
+  // version:
+  // 1: Bytes 100MB
+  // 2: Blob
+  // 3: Bytes 200MB
+  AddShortcutMemoryItem(100, &infos);  // should have no behavior change
+  AddBlobItem(&infos);
+  AddMemoryItem(200, &infos);
+
+  strategy.Initialize(100,   // max_ipc_memory_size
+                      200,   // max_shared_memory_size
+                      300,   // max_file_size
+                      5000,  // disk_space_left
+                      300,   // memory_available
+                      kNewUUID, infos);
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_NONE, strategy.error());
+
+  EXPECT_EQ(2u, strategy.shared_memory_handle_sizes().size());
+  EXPECT_EQ(200u, strategy.shared_memory_handle_sizes().at(0));
+  EXPECT_EQ(100u, strategy.shared_memory_handle_sizes().at(1));
+  EXPECT_EQ(3u, strategy.requests().size());
+
+  auto memory_item_request = strategy.requests().at(0);
+  EXPECT_EQ(0u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateSharedMemoryRequest(0u, 0u, 0ull,
+                                                            100ull, 0u, 0ull),
+            memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(1);
+  EXPECT_EQ(2u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateSharedMemoryRequest(1u, 2u, 0ull,
+                                                            100ull, 0u, 100ull),
+            memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(2);
+  EXPECT_EQ(2u, memory_item_request.browser_item_index);
+  EXPECT_EQ(100u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateSharedMemoryRequest(2u, 2u, 100ull,
+                                                            100ull, 1u, 0ull),
+            memory_item_request.message);
+
+  BlobDataBuilder builder(kNewUUID);
+  builder.AppendFutureData(100);
+  builder.AppendBlob(kFakeBlobUUID);
+  builder.AppendFutureData(200);
+
+  EXPECT_EQ(builder, *strategy.blob_builder());
+}
+
+TEST(BlobTransportStrategyTest, TestTooLarge) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // Our item is too large for disk, so error out.
+  AddMemoryItem(5001, &infos);
+
+  strategy.Initialize(100,   // max_ipc_memory_size
+                      200,   // max_shared_memory_size
+                      400,   // max_file_size
+                      5000,  // disk_space_left
+                      100,   // memory_left
+                      kNewUUID, infos);
+
+  EXPECT_EQ(0u, strategy.file_handle_sizes().size());
+  EXPECT_EQ(0u, strategy.shared_memory_handle_sizes().size());
+  EXPECT_EQ(0u, strategy.requests().size());
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_TOO_LARGE, strategy.error());
+}
+
+TEST(BlobTransportStrategyTest, TestNoDisk) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // Our item is too large for memory, and we are in no_disk mode (incognito)
+  AddMemoryItem(301, &infos);
+
+  strategy.Initialize(100,  // max_ipc_memory_size
+                      200,  // max_shared_memory_size
+                      400,  // max_file_size
+                      0,    // disk_space_left
+                      300,  // memory_available
+                      kNewUUID, infos);
+
+  EXPECT_EQ(0u, strategy.file_handle_sizes().size());
+  EXPECT_EQ(0u, strategy.shared_memory_handle_sizes().size());
+  EXPECT_EQ(0u, strategy.requests().size());
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_TOO_LARGE, strategy.error());
+}
+
+TEST(BlobTransportStrategyTest, TestNoDiskFits) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // Test that we ignore the max_blob_in_memory_size param when we're in
+  // no-disk mode, as we can never hit disk anyways.
+  AddMemoryItem(301, &infos);
+
+  strategy.Initialize(100,  // max_ipc_memory_size
+                      200,  // max_shared_memory_size
+                      400,  // max_file_size
+                      0,    // disk_space_left
+                      301,  // memory_left
+                      kNewUUID, infos);
+
+  EXPECT_EQ(0u, strategy.file_handle_sizes().size());
+  EXPECT_EQ(2u, strategy.shared_memory_handle_sizes().size());
+  EXPECT_EQ(2u, strategy.requests().size());
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_NONE, strategy.error());
+}
+
+TEST(BlobTransportStrategyTest, TestIPC) {
+  BlobAsyncTransportStrategy strategy;
+  std::vector<DataElement> infos;
+
+  // Test simple IPC strategy, where size < max_ipc_memory_size and we have just
+  // one item.
+  AddMemoryItem(10, &infos);
+  AddBlobItem(&infos);
+
+  strategy.Initialize(100,   // max_ipc_memory_size
+                      200,   // max_shared_memory_size
+                      400,   // max_file_size
+                      5000,  // disk_space_left
+                      100,   // memory_left
+                      kNewUUID, infos);
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_NONE, strategy.error());
+
+  ASSERT_EQ(1u, strategy.requests().size());
+
+  auto memory_item_request = strategy.requests().at(0);
+  EXPECT_EQ(0u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateIPCRequest(0u, 0u, 0ull, 10ull),
+            memory_item_request.message);
+
+  // Same, but with 2 items and a blob in-between.
+  infos.clear();
+  AddShortcutMemoryItem(10, &infos);  // should have no behavior change
+  AddBlobItem(&infos);
+  AddMemoryItem(80, &infos);
+
+  strategy.Initialize(100,   // max_ipc_memory_size
+                      200,   // max_shared_memory_size
+                      400,   // max_file_size
+                      5000,  // disk_space_left
+                      100,   // memory_left
+                      kNewUUID, infos);
+  EXPECT_EQ(BlobAsyncTransportStrategy::ERROR_NONE, strategy.error());
+
+  ASSERT_EQ(2u, strategy.requests().size());
+
+  memory_item_request = strategy.requests().at(0);
+  EXPECT_EQ(0u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateIPCRequest(0u, 0u, 0ull, 10ull),
+            memory_item_request.message);
+
+  memory_item_request = strategy.requests().at(1);
+  EXPECT_EQ(2u, memory_item_request.browser_item_index);
+  EXPECT_EQ(0u, memory_item_request.browser_item_offset);
+  EXPECT_EQ(BlobItemBytesRequest::CreateIPCRequest(1u, 2u, 0ull, 80ull),
+            memory_item_request.message);
+
+  // We still populate future data, as the strategy assumes we will be
+  // requesting the data.
+  BlobDataBuilder builder(kNewUUID);
+  builder.AppendFutureData(10);
+  builder.AppendBlob(kFakeBlobUUID);
+  builder.AppendFutureData(80);
+
+  EXPECT_EQ(builder, *strategy.blob_builder());
+}
+
+TEST(BlobTransportStrategyTest, Shortcut) {
+  std::vector<DataElement> infos;
+  AddMemoryItem(100, &infos);
+  AddBlobItem(&infos);
+  EXPECT_FALSE(BlobAsyncTransportStrategy::ShouldBeShortcut(infos, 200));
+
+  infos.clear();
+  AddShortcutMemoryItem(100, &infos);
+  AddBlobItem(&infos);
+  EXPECT_TRUE(BlobAsyncTransportStrategy::ShouldBeShortcut(infos, 200));
+
+  infos.clear();
+  AddShortcutMemoryItem(100, &infos);
+  EXPECT_FALSE(BlobAsyncTransportStrategy::ShouldBeShortcut(infos, 99));
+}
+
+}  // namespace
+}  // namespace storage