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// 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 <map>
#include "base/bind.h"
#include "base/macros.h"
#include "base/run_loop.h"
#include "components/leveldb/public/cpp/remote_iterator.h"
#include "components/leveldb/public/cpp/util.h"
#include "components/leveldb/public/interfaces/leveldb.mojom.h"
#include "services/service_manager/public/cpp/service_context.h"
#include "services/service_manager/public/cpp/service_test.h"
namespace leveldb {
namespace {
template <typename... Args>
void IgnoreAllArgs(Args&&...) {}
template <typename... Args>
void DoCaptures(typename std::decay<Args>::type*... out_args,
const base::Closure& quit_closure,
Args... in_args) {
IgnoreAllArgs((*out_args = std::move(in_args))...);
quit_closure.Run();
}
template <typename T1>
base::Callback<void(T1)> Capture(T1* t1, const base::Closure& quit_closure) {
return base::Bind(&DoCaptures<T1>, t1, quit_closure);
}
base::Callback<void(const base::UnguessableToken&)> CaptureToken(
base::UnguessableToken* t1,
const base::Closure& quit_closure) {
return base::Bind(&DoCaptures<const base::UnguessableToken&>, t1,
quit_closure);
}
class RemoteIteratorTest : public service_manager::test::ServiceTest {
public:
RemoteIteratorTest() : ServiceTest("leveldb_service_unittests") {}
~RemoteIteratorTest() override {}
protected:
// Overridden from mojo::test::ApplicationTestBase:
void SetUp() override {
ServiceTest::SetUp();
connector()->BindInterface("leveldb", &leveldb_);
mojom::DatabaseError error;
base::RunLoop run_loop;
leveldb()->OpenInMemory(
MakeRequest(&database_, leveldb().associated_group()),
Capture(&error, run_loop.QuitClosure()));
run_loop.Run();
EXPECT_EQ(mojom::DatabaseError::OK, error);
std::map<std::string, std::string> data{
{"a", "first"}, {"b:suffix", "second"}, {"c", "third"}};
for (auto p : data) {
// Write a key to the database.
error = mojom::DatabaseError::INVALID_ARGUMENT;
base::RunLoop run_loop;
database_->Put(StdStringToUint8Vector(p.first),
StdStringToUint8Vector(p.second),
Capture(&error, run_loop.QuitClosure()));
run_loop.Run();
EXPECT_EQ(mojom::DatabaseError::OK, error);
}
}
void TearDown() override {
leveldb_.reset();
ServiceTest::TearDown();
}
mojom::LevelDBServicePtr& leveldb() { return leveldb_; }
mojom::LevelDBDatabaseAssociatedPtr& database() { return database_; }
private:
mojom::LevelDBServicePtr leveldb_;
mojom::LevelDBDatabaseAssociatedPtr database_;
DISALLOW_COPY_AND_ASSIGN(RemoteIteratorTest);
};
TEST_F(RemoteIteratorTest, Seeking) {
base::UnguessableToken iterator;
base::RunLoop run_loop;
database()->NewIterator(CaptureToken(&iterator, run_loop.QuitClosure()));
run_loop.Run();
EXPECT_FALSE(iterator.is_empty());
RemoteIterator it(database().get(), iterator);
EXPECT_FALSE(it.Valid());
it.SeekToFirst();
EXPECT_TRUE(it.Valid());
EXPECT_EQ("a", it.key());
EXPECT_EQ("first", it.value());
it.SeekToLast();
EXPECT_TRUE(it.Valid());
EXPECT_EQ("c", it.key());
EXPECT_EQ("third", it.value());
it.Seek("b");
EXPECT_TRUE(it.Valid());
EXPECT_EQ("b:suffix", it.key());
EXPECT_EQ("second", it.value());
}
TEST_F(RemoteIteratorTest, Next) {
base::UnguessableToken iterator;
base::RunLoop run_loop;
database()->NewIterator(CaptureToken(&iterator, run_loop.QuitClosure()));
run_loop.Run();
EXPECT_FALSE(iterator.is_empty());
RemoteIterator it(database().get(), iterator);
EXPECT_FALSE(it.Valid());
it.SeekToFirst();
EXPECT_TRUE(it.Valid());
EXPECT_EQ("a", it.key());
EXPECT_EQ("first", it.value());
it.Next();
EXPECT_TRUE(it.Valid());
EXPECT_EQ("b:suffix", it.key());
EXPECT_EQ("second", it.value());
it.Next();
EXPECT_TRUE(it.Valid());
EXPECT_EQ("c", it.key());
EXPECT_EQ("third", it.value());
it.Next();
EXPECT_FALSE(it.Valid());
}
TEST_F(RemoteIteratorTest, Prev) {
base::UnguessableToken iterator;
base::RunLoop run_loop;
database()->NewIterator(CaptureToken(&iterator, run_loop.QuitClosure()));
run_loop.Run();
EXPECT_FALSE(iterator.is_empty());
RemoteIterator it(database().get(), iterator);
EXPECT_FALSE(it.Valid());
it.SeekToLast();
EXPECT_TRUE(it.Valid());
EXPECT_EQ("c", it.key());
EXPECT_EQ("third", it.value());
it.Prev();
EXPECT_TRUE(it.Valid());
EXPECT_EQ("b:suffix", it.key());
EXPECT_EQ("second", it.value());
it.Prev();
EXPECT_TRUE(it.Valid());
EXPECT_EQ("a", it.key());
EXPECT_EQ("first", it.value());
it.Prev();
EXPECT_FALSE(it.Valid());
}
} // namespace
} // namespace leveldb
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