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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/indexed_db/instance/active_blob_registry.h"
#include <stdint.h>
#include <memory>
#include <set>
#include "base/containers/contains.h"
#include "base/functional/bind.h"
#include "base/test/task_environment.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace content::indexed_db {
namespace {
struct ReportOutstandingState {
int true_calls = 0;
int false_calls = 0;
bool no_calls() { return true_calls == 0 && false_calls == 0; }
};
void ReportOutstandingBlobs(ReportOutstandingState* state,
bool blobs_outstanding) {
if (blobs_outstanding) {
++state->true_calls;
} else {
++state->false_calls;
}
}
struct UnusedBlob {
int64_t database_id;
int64_t blob_number;
bool operator<(const UnusedBlob& other) const {
if (database_id == other.database_id) {
return blob_number < other.blob_number;
}
return database_id < other.database_id;
}
};
void ReportUnusedBlob(std::set<UnusedBlob>* unused_blob_records,
int64_t database_id,
int64_t blob_number) {
unused_blob_records->insert({database_id, blob_number});
}
// Base class for our test fixtures.
class ActiveBlobRegistryTest : public testing::Test {
public:
static const int64_t kDatabaseId0 = 7;
static const int64_t kDatabaseId1 = 12;
static const int64_t kBlobNumber0 = 77;
static const int64_t kBlobNumber1 = 14;
ActiveBlobRegistryTest()
: registry_(std::make_unique<ActiveBlobRegistry>(
base::BindRepeating(ReportOutstandingBlobs,
&report_outstanding_state_),
base::BindRepeating(&ReportUnusedBlob, &unused_blobs_))) {}
ActiveBlobRegistryTest(const ActiveBlobRegistryTest&) = delete;
ActiveBlobRegistryTest& operator=(const ActiveBlobRegistryTest&) = delete;
void RunUntilIdle() { task_environment_.RunUntilIdle(); }
ActiveBlobRegistry* registry() const { return registry_.get(); }
protected:
ReportOutstandingState report_outstanding_state_;
std::set<UnusedBlob> unused_blobs_;
private:
base::test::TaskEnvironment task_environment_;
std::unique_ptr<ActiveBlobRegistry> registry_;
};
TEST_F(ActiveBlobRegistryTest, DeleteUnused) {
EXPECT_TRUE(report_outstanding_state_.no_calls());
EXPECT_TRUE(unused_blobs_.empty());
EXPECT_FALSE(registry()->MarkBlobInfoDeletedAndCheckIfReferenced(
kDatabaseId0, kBlobNumber0));
RunUntilIdle();
EXPECT_TRUE(report_outstanding_state_.no_calls());
EXPECT_TRUE(unused_blobs_.empty());
}
TEST_F(ActiveBlobRegistryTest, SimpleUse) {
EXPECT_TRUE(report_outstanding_state_.no_calls());
EXPECT_TRUE(unused_blobs_.empty());
auto add_ref =
registry()->GetMarkBlobActiveCallback(kDatabaseId0, kBlobNumber0);
auto release =
registry()->GetFinalReleaseCallback(kDatabaseId0, kBlobNumber0);
std::move(add_ref).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
std::move(release).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(1, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
}
TEST_F(ActiveBlobRegistryTest, DeleteWhileInUse) {
EXPECT_TRUE(report_outstanding_state_.no_calls());
EXPECT_TRUE(unused_blobs_.empty());
auto add_ref =
registry()->GetMarkBlobActiveCallback(kDatabaseId0, kBlobNumber0);
auto release =
registry()->GetFinalReleaseCallback(kDatabaseId0, kBlobNumber0);
std::move(add_ref).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
EXPECT_TRUE(registry()->MarkBlobInfoDeletedAndCheckIfReferenced(
kDatabaseId0, kBlobNumber0));
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
std::move(release).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(1, report_outstanding_state_.false_calls);
UnusedBlob unused_blob = {kDatabaseId0, kBlobNumber0};
EXPECT_EQ(1u, unused_blobs_.size());
EXPECT_TRUE(base::Contains(unused_blobs_, unused_blob));
}
TEST_F(ActiveBlobRegistryTest, MultipleBlobs) {
EXPECT_TRUE(report_outstanding_state_.no_calls());
EXPECT_TRUE(unused_blobs_.empty());
auto add_ref_00 =
registry()->GetMarkBlobActiveCallback(kDatabaseId0, kBlobNumber0);
auto release_00 =
registry()->GetFinalReleaseCallback(kDatabaseId0, kBlobNumber0);
auto add_ref_01 =
registry()->GetMarkBlobActiveCallback(kDatabaseId0, kBlobNumber1);
auto release_01 =
registry()->GetFinalReleaseCallback(kDatabaseId0, kBlobNumber1);
auto add_ref_10 =
registry()->GetMarkBlobActiveCallback(kDatabaseId1, kBlobNumber0);
auto release_10 =
registry()->GetFinalReleaseCallback(kDatabaseId1, kBlobNumber0);
auto add_ref_11 =
registry()->GetMarkBlobActiveCallback(kDatabaseId1, kBlobNumber1);
auto release_11 =
registry()->GetFinalReleaseCallback(kDatabaseId1, kBlobNumber1);
std::move(add_ref_00).Run();
std::move(add_ref_01).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
std::move(release_00).Run();
std::move(add_ref_10).Run();
std::move(add_ref_11).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
EXPECT_TRUE(registry()->MarkBlobInfoDeletedAndCheckIfReferenced(
kDatabaseId0, kBlobNumber1));
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
std::move(release_01).Run();
std::move(release_11).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
UnusedBlob unused_blob = {kDatabaseId0, kBlobNumber1};
EXPECT_TRUE(base::Contains(unused_blobs_, unused_blob));
EXPECT_EQ(1u, unused_blobs_.size());
std::move(release_10).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(1, report_outstanding_state_.false_calls);
unused_blob = {kDatabaseId0, kBlobNumber1};
EXPECT_TRUE(base::Contains(unused_blobs_, unused_blob));
EXPECT_EQ(1u, unused_blobs_.size());
}
TEST_F(ActiveBlobRegistryTest, ForceShutdown) {
EXPECT_TRUE(report_outstanding_state_.no_calls());
EXPECT_TRUE(unused_blobs_.empty());
auto add_ref_0 =
registry()->GetMarkBlobActiveCallback(kDatabaseId0, kBlobNumber0);
auto release_0 =
registry()->GetFinalReleaseCallback(kDatabaseId0, kBlobNumber0);
auto add_ref_1 =
registry()->GetMarkBlobActiveCallback(kDatabaseId0, kBlobNumber1);
auto release_1 =
registry()->GetFinalReleaseCallback(kDatabaseId0, kBlobNumber1);
std::move(add_ref_0).Run();
RunUntilIdle();
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
registry()->ForceShutdown();
std::move(add_ref_1).Run();
RunUntilIdle();
// Nothing changes.
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
std::move(release_0).Run();
std::move(release_1).Run();
RunUntilIdle();
// Nothing changes.
EXPECT_EQ(1, report_outstanding_state_.true_calls);
EXPECT_EQ(0, report_outstanding_state_.false_calls);
EXPECT_TRUE(unused_blobs_.empty());
}
} // namespace
} // namespace content::indexed_db
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