Write out CacheStorageCache size to index file.

content/browser/cache_storage/cache_storage_index_unittest.cc

Index: content/browser/cache_storage/cache_storage_index_unittest.cc
diff --git a/content/browser/cache_storage/cache_storage_index_unittest.cc b/content/browser/cache_storage/cache_storage_index_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0f097772d05e1ec4f8991334cd9f7f007d074384
--- /dev/null
+++ b/content/browser/cache_storage/cache_storage_index_unittest.cc
@@ -0,0 +1,169 @@
+// 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 {
+
+namespace {
+
+void ClearIndex(CacheStorageIndex* index) {
+  std::list<std::string> names;
+  for (const auto& metadata : index->ordered_cache_metadata())
+    names.push_back(metadata.name);
+  for (const std::string& name : names)
+    index->Delete(name);
+}
+
+}  // namespace
+
+class CacheStorageIndexTest : public testing::Test {
+ public:
+  void SetUp() override {}
+  void TearDown() override {}
+};
+
+TEST_F(CacheStorageIndexTest, TestDefaultConstructor) {
+  CacheStorageIndex index;
+  EXPECT_EQ(0u, index.num_entries());
+  EXPECT_TRUE(index.ordered_cache_metadata().empty());
+  EXPECT_EQ(0u, index.GetStorageSize());
+}
+
+TEST_F(CacheStorageIndexTest, TestCopyConstructor) {
+  CacheStorageIndex index;
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  EXPECT_EQ(3u, index.num_entries());
+  ASSERT_EQ(3u, index.ordered_cache_metadata().size());
+  EXPECT_EQ(1031, index.GetStorageSize());
+
+  CacheStorageIndex index2(index);
+  ClearIndex(&index);
+
+  auto it = index2.ordered_cache_metadata().begin();
+  EXPECT_EQ("foo", it->name);
+  EXPECT_EQ(12u, it->size);
+  it++;
+  EXPECT_EQ("bar", it->name);
+  EXPECT_EQ(19u, it->size);
+  it++;
+  EXPECT_EQ("baz", it->name);
+  EXPECT_EQ(1000u, it->size);
+
+  EXPECT_EQ(3u, index2.num_entries());
+  ASSERT_EQ(3u, index2.ordered_cache_metadata().size());
+  EXPECT_EQ(1031, index2.GetStorageSize());
+}
+
+TEST_F(CacheStorageIndexTest, TestSetCacheSize) {
+  CacheStorageIndex index;
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  EXPECT_EQ(3u, index.num_entries());
+  ASSERT_EQ(3u, index.ordered_cache_metadata().size());
+  EXPECT_EQ(1031, index.GetStorageSize());
+
+  EXPECT_TRUE(index.SetCacheSize("baz", 2000));
+  EXPECT_EQ(2031, index.GetStorageSize());
+
+  EXPECT_FALSE(index.SetCacheSize("baz", 2000));
+  EXPECT_EQ(2031, index.GetStorageSize());
+
+  index.SetCacheSizeModified("baz", 500);
+  EXPECT_EQ(2531, index.GetStorageSize());
+  EXPECT_EQ(2500, index.GetCacheSize("baz"));
+  EXPECT_EQ(CacheStorage::kSizeUnknown, index.GetCacheSize("<not-present>"));
+}
+
+TEST_F(CacheStorageIndexTest, TestDelete) {
+  CacheStorageIndex index;
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  EXPECT_EQ(3u, index.num_entries());
+  ASSERT_EQ(3u, index.ordered_cache_metadata().size());
+  EXPECT_EQ(1031, index.GetStorageSize());
+
+  auto it = index.ordered_cache_metadata().begin();
+  EXPECT_EQ("bar", it->name);
+  EXPECT_EQ(19u, it->size);
+  it++;
+  EXPECT_EQ("foo", it->name);
+  EXPECT_EQ(12u, it->size);
+  it++;
+  EXPECT_EQ("baz", it->name);
+  EXPECT_EQ(1000u, it->size);
+
+  index.Delete("bar");
+  EXPECT_EQ(2u, index.num_entries());
+  ASSERT_EQ(2u, index.ordered_cache_metadata().size());
+  EXPECT_EQ(1012, index.GetStorageSize());
+
+  it = index.ordered_cache_metadata().begin();
+  EXPECT_EQ("foo", it->name);
+  EXPECT_EQ(12u, it->size);
+  it++;
+  EXPECT_EQ("baz", it->name);
+  EXPECT_EQ(1000u, it->size);
+
+  index.Delete("baz");
+  EXPECT_EQ(1u, index.num_entries());
+  ASSERT_EQ(1u, index.ordered_cache_metadata().size());
+  EXPECT_EQ(12, index.GetStorageSize());
+
+  it = index.ordered_cache_metadata().begin();
+  EXPECT_EQ("foo", it->name);
+  EXPECT_EQ(12u, it->size);
+}
+
+TEST_F(CacheStorageIndexTest, TestInsert) {
+  CacheStorageIndex index;
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+  EXPECT_EQ(3u, index.num_entries());
+  ASSERT_EQ(3u, index.ordered_cache_metadata().size());
+  EXPECT_EQ(1031, index.GetStorageSize());
+}
+
+TEST_F(CacheStorageIndexTest, TestMoveOperator) {
+  CacheStorageIndex index;
+  index.Insert(CacheStorageIndex::CacheMetadata("foo", 12));
+  index.Insert(CacheStorageIndex::CacheMetadata("bar", 19));
+  index.Insert(CacheStorageIndex::CacheMetadata("baz", 1000));
+
+  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());
+
+  EXPECT_EQ(0u, index.num_entries());
+  EXPECT_TRUE(index.ordered_cache_metadata().empty());
+  EXPECT_EQ(0u, index.GetStorageSize());
+
+  auto it = index2.ordered_cache_metadata().begin();
+  EXPECT_EQ("foo", it->name);
+  EXPECT_EQ(12u, it->size);
+  it++;
+  EXPECT_EQ("bar", it->name);
+  EXPECT_EQ(19u, it->size);
+  it++;
+  EXPECT_EQ("baz", it->name);
+  EXPECT_EQ(1000u, it->size);
+
+  EXPECT_EQ(3u, index2.num_entries());
+  ASSERT_EQ(3u, index2.ordered_cache_metadata().size());
+  EXPECT_EQ(1031, index2.GetStorageSize());
+}
+
+}  // namespace content