[CacheStorage] Pad and bin opaque resource sizes.

content/browser/cache_storage/cache_storage_index_unittest.cc

 // Copyright 2016 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 "content/browser/cache_storage/cache_storage_index.h"
 
 #include <list>
 #include <utility>
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace content {
 
 class CacheStorageIndexTest : public testing::Test {
  public:
   void SetUp() override {}
   void TearDown() override {}
-  CacheStorageIndexTest() = default;
+  CacheStorageIndexTest() : padding_key_("abcd1234") {}
+
+  const std::string padding_key_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CacheStorageIndexTest);
 };
 
 TEST_F(CacheStorageIndexTest, TestDefaultConstructor) {
   CacheStorageIndex index;
   EXPECT_EQ(0u, index.num_entries());
   EXPECT_TRUE(index.ordered_cache_metadata().empty());
-  EXPECT_EQ(0u, index.GetStorageSize());
+  EXPECT_EQ(0u, index.GetPaddedStorageSize());
 }
 
 TEST_F(CacheStorageIndexTest, TestSetCacheSize) {
   CacheStorageIndex index;
-  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
-  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
-  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12, 2, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19, 3, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000, 4, padding_key_));
   EXPECT_EQ(3u, index.num_entries());
   ASSERT_EQ(3u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(1031, index.GetStorageSize());
+  EXPECT_EQ(12 + 2 + 19 + 3 + 1000 + 4, index.GetPaddedStorageSize());
 
   EXPECT_TRUE(index.SetCacheSize("baz", 2000));
-  EXPECT_EQ(2031, index.GetStorageSize());
+  EXPECT_EQ(12 + 2 + 19 + 3 + 2000 + 4, index.GetPaddedStorageSize());
 
   EXPECT_FALSE(index.SetCacheSize("baz", 2000));
-  EXPECT_EQ(2031, index.GetStorageSize());
+  EXPECT_EQ(12 + 2 + 19 + 3 + 2000 + 4, index.GetPaddedStorageSize());
 
   EXPECT_EQ(2000, index.GetCacheSize("baz"));
   EXPECT_EQ(CacheStorage::kSizeUnknown, index.GetCacheSize("<not-present>"));
 }
 
+TEST_F(CacheStorageIndexTest, TestSetCachePadding) {
+  CacheStorageIndex index;
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12, 2, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19, 3, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000, 4, padding_key_));
+  EXPECT_EQ(3u, index.num_entries());
+  ASSERT_EQ(3u, index.ordered_cache_metadata().size());
+  EXPECT_EQ(12 + 2 + 19 + 3 + 1000 + 4, index.GetPaddedStorageSize());
+
+  EXPECT_TRUE(index.SetCachePadding("baz", 80));
+  EXPECT_EQ(12 + 2 + 19 + 3 + 1000 + 80, index.GetPaddedStorageSize());
+
+  EXPECT_FALSE(index.SetCachePadding("baz", 80));
+  EXPECT_EQ(12 + 2 + 19 + 3 + 1000 + 80, index.GetPaddedStorageSize());
+
+  EXPECT_EQ(80, index.GetCachePadding("baz"));
+  EXPECT_EQ(CacheStorage::kSizeUnknown, index.GetCachePadding("<not-present>"));
+}
+
 TEST_F(CacheStorageIndexTest, TestDoomCache) {
   CacheStorageIndex index;
-  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
-  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
-  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12, 2, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19, 3, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000, 4, padding_key_));
   EXPECT_EQ(3u, index.num_entries());
   ASSERT_EQ(3u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(1031, index.GetStorageSize());
+  EXPECT_EQ(12 + 2 + 19 + 3 + 1000 + 4, index.GetPaddedStorageSize());
 
   index.DoomCache("bar");
   EXPECT_EQ(2u, index.num_entries());
   ASSERT_EQ(2u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(1031 - 19, index.GetStorageSize());
+  EXPECT_EQ(12 + 2 + 1000 + 4, index.GetPaddedStorageSize());
   index.RestoreDoomedCache();
   EXPECT_EQ(3u, index.num_entries());
   ASSERT_EQ(3u, index.ordered_cache_metadata().size());
   auto it = index.ordered_cache_metadata().begin();
   EXPECT_EQ("foo", (it++)->name);
   EXPECT_EQ("bar", (it++)->name);
   EXPECT_EQ("baz", (it++)->name);
-  EXPECT_EQ(1031, index.GetStorageSize());
+  EXPECT_EQ(12 + 2 + 19 + 3 + 1000 + 4, index.GetPaddedStorageSize());
 
   index.DoomCache("foo");
   EXPECT_EQ(2u, index.num_entries());
   ASSERT_EQ(2u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(1031 - 12, index.GetStorageSize());
+  EXPECT_EQ(19 + 3 + 1000 + 4, index.GetPaddedStorageSize());
   index.FinalizeDoomedCache();
   EXPECT_EQ(2u, index.num_entries());
   ASSERT_EQ(2u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(1031 - 12, index.GetStorageSize());
+  EXPECT_EQ(19 + 3 + 1000 + 4, index.GetPaddedStorageSize());
 }
 
 TEST_F(CacheStorageIndexTest, TestDelete) {
   CacheStorageIndex index;
-  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
-  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
-  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19, 2, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12, 3, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000, 4, padding_key_));
   EXPECT_EQ(3u, index.num_entries());
   ASSERT_EQ(3u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(1031, index.GetStorageSize());
+  EXPECT_EQ(19 + 2 + 12 + 3 + 1000 + 4, index.GetPaddedStorageSize());
 
   auto it = index.ordered_cache_metadata().begin();
   EXPECT_EQ("bar", it->name);
   EXPECT_EQ(19u, it->size);
+  EXPECT_EQ(2u, it->padding);
   it++;
   EXPECT_EQ("foo", it->name);
   EXPECT_EQ(12u, it->size);
+  EXPECT_EQ(3u, it->padding);
   it++;
   EXPECT_EQ("baz", it->name);
   EXPECT_EQ(1000u, it->size);
+  EXPECT_EQ(4u, it->padding);
 
   index.Delete("bar");
   EXPECT_EQ(2u, index.num_entries());
   ASSERT_EQ(2u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(1012, index.GetStorageSize());
+  EXPECT_EQ(12 + 3 + 1000 + 4, index.GetPaddedStorageSize());
 
   it = index.ordered_cache_metadata().begin();
   EXPECT_EQ("foo", it->name);
   EXPECT_EQ(12u, it->size);
+  EXPECT_EQ(3u, it->padding);
   it++;
   EXPECT_EQ("baz", it->name);
   EXPECT_EQ(1000u, it->size);
+  EXPECT_EQ(4u, it->padding);
 
   index.Delete("baz");
   EXPECT_EQ(1u, index.num_entries());
   ASSERT_EQ(1u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(12, index.GetStorageSize());
+  EXPECT_EQ(12 + 3, index.GetPaddedStorageSize());
 
   it = index.ordered_cache_metadata().begin();
   EXPECT_EQ("foo", it->name);
   EXPECT_EQ(12u, it->size);
+  EXPECT_EQ(3u, it->padding);
 }
 
 TEST_F(CacheStorageIndexTest, TestInsert) {
   CacheStorageIndex index;
-  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
-  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
-  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12, 2, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19, 3, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000, 4, padding_key_));
   EXPECT_EQ(3u, index.num_entries());
   ASSERT_EQ(3u, index.ordered_cache_metadata().size());
-  EXPECT_EQ(1031, index.GetStorageSize());
+  EXPECT_EQ(12 + 2 + 19 + 3 + 1000 + 4, index.GetPaddedStorageSize());
 }
 
 TEST_F(CacheStorageIndexTest, TestMoveOperator) {
   CacheStorageIndex index;
-  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
-  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
-  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12, 2, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19, 3, padding_key_));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000, 4, padding_key_));
 
   CacheStorageIndex index2;
   index2 = std::move(index);
 
   EXPECT_EQ(3u, index2.num_entries());
   EXPECT_EQ(3u, index2.ordered_cache_metadata().size());
-  ASSERT_EQ(1031, index2.GetStorageSize());
+  ASSERT_EQ(12 + 2 + 19 + 3 + 1000 + 4, index2.GetPaddedStorageSize());
 
   EXPECT_EQ(0u, index.num_entries());
   EXPECT_TRUE(index.ordered_cache_metadata().empty());
-  EXPECT_EQ(0u, index.GetStorageSize());
+  EXPECT_EQ(0u, index.GetPaddedStorageSize());
 
   auto it = index2.ordered_cache_metadata().begin();
   EXPECT_EQ("foo", it->name);
   EXPECT_EQ(12u, it->size);
+  EXPECT_EQ(2u, it->padding);
   it++;
   EXPECT_EQ("bar", it->name);
   EXPECT_EQ(19u, it->size);
+  EXPECT_EQ(3u, it->padding);
   it++;
   EXPECT_EQ("baz", it->name);
   EXPECT_EQ(1000u, it->size);
+  EXPECT_EQ(4u, it->padding);
 
   EXPECT_EQ(3u, index2.num_entries());
   ASSERT_EQ(3u, index2.ordered_cache_metadata().size());
-  EXPECT_EQ(1031, index2.GetStorageSize());
+  EXPECT_EQ(12 + 2 + 19 + 3 + 1000 + 4, index2.GetPaddedStorageSize());
 }
 
 }  // namespace content