Remove the flash specific disk cache backend.

net/disk_cache/flash/segment_unittest.cc

-// Copyright (c) 2012 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 "base/memory/scoped_ptr.h"
-#include "net/disk_cache/disk_cache_test_util.h"
-#include "net/disk_cache/flash/segment.h"
-#include "net/disk_cache/flash/storage.h"
-#include "net/disk_cache/flash/flash_cache_test_base.h"
-#include "net/disk_cache/flash/format.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-template<int SIZE>
-struct Entry {
-  enum { size = SIZE };
-
-  Entry() { CacheTestFillBuffer(data, size, false); }
-
-  bool operator==(const Entry& rhs) const {
-    return std::equal(data, data + size, rhs.data);
-  }
-
-  char data[size];
-};
-
-const int32 kSmallEntrySize = 100;
-const int32 kLargeEntrySize = disk_cache::kFlashSegmentSize / 4;
-
-typedef Entry<kSmallEntrySize> SmallEntry;
-typedef Entry<kLargeEntrySize> LargeEntry;
-
-const int32 kSegmentFreeSpace = disk_cache::kFlashSegmentSize -
-                                disk_cache::kFlashSummarySize;
-
-}  // namespace
-
-TEST_F(FlashCacheTest, SegmentUserTracking) {
-  disk_cache::Storage storage(path_, kStorageSize);
-  ASSERT_TRUE(storage.Init());
-
-  scoped_ptr<disk_cache::Segment> segment(
-      new disk_cache::Segment(0, false, &storage));
-  EXPECT_TRUE(segment->Init());
-
-  EXPECT_TRUE(segment->HasNoUsers());
-  segment->AddUser();
-  segment->AddUser();
-  EXPECT_FALSE(segment->HasNoUsers());
-
-  segment->ReleaseUser();
-  EXPECT_FALSE(segment->HasNoUsers());
-  segment->ReleaseUser();
-  EXPECT_TRUE(segment->HasNoUsers());
-
-  EXPECT_TRUE(segment->Close());
-}
-
-TEST_F(FlashCacheTest, SegmentCreateDestroy) {
-  disk_cache::Storage storage(path_, kStorageSize);
-  ASSERT_TRUE(storage.Init());
-
-  int32 index = 0;
-  scoped_ptr<disk_cache::Segment> segment(
-      new disk_cache::Segment(index, false, &storage));
-  EXPECT_TRUE(segment->Init());
-  EXPECT_TRUE(segment->Close());
-
-  index = kNumTestSegments - 1;
-  segment.reset(new disk_cache::Segment(index, false, &storage));
-  EXPECT_TRUE(segment->Init());
-  EXPECT_TRUE(segment->Close());
-
-  int32 invalid_index = kNumTestSegments;
-  segment.reset(new disk_cache::Segment(invalid_index, false, &storage));
-  EXPECT_FALSE(segment->Init());
-
-  invalid_index = -1;
-  segment.reset(new disk_cache::Segment(invalid_index, false, &storage));
-  EXPECT_FALSE(segment->Init());
-}
-
-TEST_F(FlashCacheTest, SegmentWriteDataReadData) {
-  disk_cache::Storage storage(path_, kStorageSize);
-  ASSERT_TRUE(storage.Init());
-
-  int32 index = rand() % kNumTestSegments;
-  scoped_ptr<disk_cache::Segment> segment(
-      new disk_cache::Segment(index, false, &storage));
-
-  EXPECT_TRUE(segment->Init());
-  SmallEntry entry1;
-  EXPECT_TRUE(segment->CanHold(entry1.size));
-  int32 offset = segment->write_offset();
-  EXPECT_TRUE(segment->WriteData(entry1.data, entry1.size));
-  segment->StoreOffset(offset);
-  EXPECT_TRUE(segment->Close());
-
-  segment.reset(new disk_cache::Segment(index, true, &storage));
-  EXPECT_TRUE(segment->Init());
-  SmallEntry entry2;
-  EXPECT_TRUE(segment->ReadData(entry2.data, entry2.size, offset));
-  EXPECT_EQ(entry1, entry2);
-  EXPECT_TRUE(segment->Close());
-}
-
-TEST_F(FlashCacheTest, SegmentFillWithSmallEntries) {
-  disk_cache::Storage storage(path_, kStorageSize);
-  ASSERT_TRUE(storage.Init());
-
-  int32 index = rand() % kNumTestSegments;
-  scoped_ptr<disk_cache::Segment> segment(
-      new disk_cache::Segment(index, false, &storage));
-
-  EXPECT_TRUE(segment->Init());
-  SmallEntry entry;
-  int32 num_bytes_written = 0;
-  while (segment->CanHold(entry.size)) {
-    int32 offset = segment->write_offset();
-    EXPECT_TRUE(segment->WriteData(entry.data, entry.size));
-    segment->StoreOffset(offset);
-    num_bytes_written += entry.size;
-  }
-  int32 space_left = kSegmentFreeSpace - num_bytes_written;
-  EXPECT_GE(space_left, entry.size);
-  EXPECT_EQ(segment->GetOffsets().size(), disk_cache::kFlashMaxEntryCount);
-  EXPECT_TRUE(segment->Close());
-}
-
-TEST_F(FlashCacheTest, SegmentFillWithLargeEntries) {
-  disk_cache::Storage storage(path_, kStorageSize);
-  ASSERT_TRUE(storage.Init());
-
-  int32 index = rand() % kNumTestSegments;
-  scoped_ptr<disk_cache::Segment> segment(
-      new disk_cache::Segment(index, false, &storage));
-
-  EXPECT_TRUE(segment->Init());
-  scoped_ptr<LargeEntry> entry(new LargeEntry);
-  int32 num_bytes_written = 0;
-  while (segment->CanHold(entry->size)) {
-    int32 offset = segment->write_offset();
-    EXPECT_TRUE(segment->WriteData(entry->data, entry->size));
-    segment->StoreOffset(offset);
-    num_bytes_written += entry->size;
-  }
-  int32 space_left = kSegmentFreeSpace - num_bytes_written;
-  EXPECT_LT(space_left, entry->size);
-  EXPECT_LT(segment->GetOffsets().size(), disk_cache::kFlashMaxEntryCount);
-  EXPECT_TRUE(segment->Close());
-}