Download Service : Added leveldb proto layer

components/download/internal/download_store_unittest.cc

Index: components/download/internal/download_store_unittest.cc
diff --git a/components/download/internal/download_store_unittest.cc b/components/download/internal/download_store_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..6f17a6a89b1499bd6ae8be6688004e6ee83ab688
--- /dev/null
+++ b/components/download/internal/download_store_unittest.cc
@@ -0,0 +1,256 @@
+// Copyright 2017 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 "components/download/internal/download_store.h"
+
+#include <algorithm>
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/guid.h"
+#include "base/memory/ptr_util.h"
+#include "components/download/internal/entry.h"
+#include "components/download/internal/proto/entry.pb.h"
+#include "components/download/internal/proto_conversions.h"
+#include "components/download/internal/test/entry_utils.h"
+#include "components/leveldb_proto/testing/fake_db.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::_;
+
+namespace download {
+
+class DownloadStoreTest : public testing::Test {
+ public:
+  DownloadStoreTest() : db_(nullptr) {}
+
+  ~DownloadStoreTest() override = default;
+
+  void CreateDatabase() {
+    auto db = base::MakeUnique<leveldb_proto::test::FakeDB<protodb::Entry>>(
+        &db_entries_);
+    db_ = db.get();
+    store_.reset(new DownloadStore(
+        base::FilePath(FILE_PATH_LITERAL("/test/db/fakepath")), std::move(db)));
+  }
+
+  void InitCallback(std::vector<Entry>* loaded_entries,
+                    bool success,
+                    std::unique_ptr<std::vector<Entry>> entries) {
+    loaded_entries->swap(*entries);
+  }
+
+  void LoadCallback(std::vector<protodb::Entry>* loaded_entries,
+                    bool success,
+                    std::unique_ptr<std::vector<protodb::Entry>> entries) {
+    loaded_entries->swap(*entries);
+  }
+
+  MOCK_METHOD1(StoreCallback, void(bool));
+
+  void PrepopulateSampleEntries() {
+    Entry item1 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+    Entry item2 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+    db_entries_.insert(
+        std::make_pair(item1.guid, ProtoConversions::EntryToProto(item1)));
+    db_entries_.insert(
+        std::make_pair(item2.guid, ProtoConversions::EntryToProto(item2)));
+  }
+
+ protected:
+  std::map<std::string, protodb::Entry> db_entries_;
+  leveldb_proto::test::FakeDB<protodb::Entry>* db_;
+  std::unique_ptr<DownloadStore> store_;
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadStoreTest);
+};
+
+TEST_F(DownloadStoreTest, Initialize) {
+  PrepopulateSampleEntries();
+  CreateDatabase();
+  ASSERT_FALSE(store_->IsInitialized());
+
+  std::vector<Entry> preloaded_entries;
+  store_->Initialize(base::Bind(&DownloadStoreTest::InitCallback,
+                                base::Unretained(this), &preloaded_entries));
+  db_->InitCallback(true);
+  db_->LoadCallback(true);
+
+  ASSERT_TRUE(store_->IsInitialized());
+  ASSERT_EQ(2u, preloaded_entries.size());
+}
+
+TEST_F(DownloadStoreTest, Update) {
+  PrepopulateSampleEntries();
+  CreateDatabase();
+
+  std::vector<Entry> preloaded_entries;
+  store_->Initialize(base::Bind(&DownloadStoreTest::InitCallback,
+                                base::Unretained(this), &preloaded_entries));
+  db_->InitCallback(true);
+  db_->LoadCallback(true);
+  ASSERT_TRUE(store_->IsInitialized());
+  ASSERT_EQ(2u, preloaded_entries.size());
+
+  Entry item1 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  Entry item2 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  EXPECT_CALL(*this, StoreCallback(true)).Times(2);
+  store_->Update(item1, base::Bind(&DownloadStoreTest::StoreCallback,
+                                   base::Unretained(this)));
+  db_->UpdateCallback(true);
+  store_->Update(item2, base::Bind(&DownloadStoreTest::StoreCallback,
+                                   base::Unretained(this)));
+  db_->UpdateCallback(true);
+
+  // Query the database directly and check for the entry.
+  auto protos = base::MakeUnique<std::vector<protodb::Entry>>();
+  db_->LoadEntries(base::Bind(&DownloadStoreTest::LoadCallback,
+                              base::Unretained(this), protos.get()));
+  db_->LoadCallback(true);
+  ASSERT_EQ(4u, protos->size());
+  ASSERT_TRUE(test::CompareEntryList(
+      {preloaded_entries[0], preloaded_entries[1], item1, item2},
+      *ProtoConversions::EntryVectorFromProto(std::move(protos))));
+}
+
+TEST_F(DownloadStoreTest, Remove) {
+  PrepopulateSampleEntries();
+  CreateDatabase();
+
+  std::vector<Entry> preloaded_entries;
+  store_->Initialize(base::Bind(&DownloadStoreTest::InitCallback,
+                                base::Unretained(this), &preloaded_entries));
+  db_->InitCallback(true);
+  db_->LoadCallback(true);
+  ASSERT_EQ(2u, preloaded_entries.size());
+
+  // Remove the entry.
+  EXPECT_CALL(*this, StoreCallback(true)).Times(1);
+  store_->Remove(
+      preloaded_entries[0].guid,
+      base::Bind(&DownloadStoreTest::StoreCallback, base::Unretained(this)));
+  db_->UpdateCallback(true);
+
+  // Query the database directly and check for the entry removed.
+  auto protos = base::MakeUnique<std::vector<protodb::Entry>>();
+  db_->LoadEntries(base::Bind(&DownloadStoreTest::LoadCallback,
+                              base::Unretained(this), protos.get()));
+  db_->LoadCallback(true);
+  ASSERT_EQ(1u, protos->size());
+  ASSERT_TRUE(test::CompareEntryList(
+      {preloaded_entries[1]},
+      *ProtoConversions::EntryVectorFromProto(std::move(protos))));
+}
+
+TEST_F(DownloadStoreTest, InitializeFailed) {
+  PrepopulateSampleEntries();
+  CreateDatabase();
+
+  std::vector<Entry> preloaded_entries;
+  store_->Initialize(base::Bind(&DownloadStoreTest::InitCallback,
+                                base::Unretained(this), &preloaded_entries));
+  db_->InitCallback(false);
+  ASSERT_FALSE(store_->IsInitialized());
+  ASSERT_TRUE(preloaded_entries.empty());
+}
+
+TEST_F(DownloadStoreTest, InitialLoadFailed) {
+  PrepopulateSampleEntries();
+  CreateDatabase();
+
+  std::vector<Entry> preloaded_entries;
+  store_->Initialize(base::Bind(&DownloadStoreTest::InitCallback,
+                                base::Unretained(this), &preloaded_entries));
+  db_->InitCallback(true);
+  db_->LoadCallback(false);
+  ASSERT_FALSE(store_->IsInitialized());
+  ASSERT_TRUE(preloaded_entries.empty());
+}
+
+TEST_F(DownloadStoreTest, UnsuccessfulUpdateOrRemove) {
+  Entry item1 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  CreateDatabase();
+
+  std::vector<Entry> entries;
+  store_->Initialize(base::Bind(&DownloadStoreTest::InitCallback,
+                                base::Unretained(this), &entries));
+  db_->InitCallback(true);
+  db_->LoadCallback(true);
+  ASSERT_TRUE(store_->IsInitialized());
+  ASSERT_TRUE(entries.empty());
+
+  // Update failed.
+  EXPECT_CALL(*this, StoreCallback(false)).Times(1);
+  store_->Update(item1, base::Bind(&DownloadStoreTest::StoreCallback,
+                                   base::Unretained(this)));
+  db_->UpdateCallback(false);
+
+  // Remove failed.
+  EXPECT_CALL(*this, StoreCallback(false)).Times(1);
+  store_->Remove(item1.guid, base::Bind(&DownloadStoreTest::StoreCallback,
+                                        base::Unretained(this)));
+  db_->UpdateCallback(false);
+}
+
+TEST_F(DownloadStoreTest, AddThenRemove) {
+  CreateDatabase();
+
+  std::vector<Entry> entries;
+  store_->Initialize(base::Bind(&DownloadStoreTest::InitCallback,
+                                base::Unretained(this), &entries));
+  db_->InitCallback(true);
+  db_->LoadCallback(true);
+  ASSERT_TRUE(entries.empty());
+
+  Entry item1 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  Entry item2 = test::BuildEntry(DownloadClient::TEST, base::GenerateGUID());
+  EXPECT_CALL(*this, StoreCallback(true)).Times(2);
+  store_->Update(item1, base::Bind(&DownloadStoreTest::StoreCallback,
+                                   base::Unretained(this)));
+  db_->UpdateCallback(true);
+  store_->Update(item2, base::Bind(&DownloadStoreTest::StoreCallback,
+                                   base::Unretained(this)));
+  db_->UpdateCallback(true);
+
+  // Query the database directly and check for the entry.
+  auto protos = base::MakeUnique<std::vector<protodb::Entry>>();
+  db_->LoadEntries(base::Bind(&DownloadStoreTest::LoadCallback,
+                              base::Unretained(this), protos.get()));
+  db_->LoadCallback(true);
+  ASSERT_EQ(2u, protos->size());
+
+  // Remove the entry.
+  EXPECT_CALL(*this, StoreCallback(true)).Times(1);
+  store_->Remove(item1.guid, base::Bind(&DownloadStoreTest::StoreCallback,
+                                        base::Unretained(this)));
+  db_->UpdateCallback(true);
+
+  // Query the database directly and check for the entry removed.
+  protos->clear();
+  db_->LoadEntries(base::Bind(&DownloadStoreTest::LoadCallback,
+                              base::Unretained(this), protos.get()));
+  db_->LoadCallback(true);
+  ASSERT_EQ(1u, protos->size());
+  ASSERT_TRUE(test::CompareEntryList(
+      {item2}, *ProtoConversions::EntryVectorFromProto(std::move(protos))));
+}
+
+TEST_F(DownloadStoreTest, Destroy) {
+  CreateDatabase();
+  ASSERT_FALSE(store_->IsInitialized());
+
+  std::vector<Entry> entries;
+  store_->Initialize(base::Bind(&DownloadStoreTest::InitCallback,
+                                base::Unretained(this), &entries));
+  db_->InitCallback(true);
+  db_->LoadCallback(true);
+  ASSERT_TRUE(store_->IsInitialized());
+
+  store_->Destroy(
+      base::Bind(&DownloadStoreTest::StoreCallback, base::Unretained(this)));
+  ASSERT_FALSE(store_->IsInitialized());
+}
+
+}  // namespace download