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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <algorithm>
#include "apps/saved_files_service.h"
#include "base/files/file_path.h"
#include "base/memory/raw_ptr.h"
#include "base/strings/string_number_conversions.h"
#include "base/test/values_test_util.h"
#include "base/values.h"
#include "chrome/browser/extensions/test_extension_environment.h"
#include "chrome/test/base/testing_profile.h"
#include "extensions/browser/api/file_system/saved_file_entry.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_system.h"
#include "extensions/common/extension.h"
#include "testing/gtest/include/gtest/gtest.h"
#define TRACE_CALL(expression) \
do { \
SCOPED_TRACE(#expression); \
expression; \
} while (0)
using apps::SavedFilesService;
using extensions::SavedFileEntry;
namespace {
std::string GenerateId(int i) {
return base::NumberToString(i) + ":filename.ext";
}
} // namespace
class SavedFilesServiceUnitTest : public testing::Test {
protected:
void SetUp() override {
static const char kManifest[] =
"{"
" \"app\": {"
" \"background\": {"
" \"scripts\": [\"background.js\"]"
" }"
" },"
" \"permissions\": ["
" {\"fileSystem\": [\"retainEntries\"]}"
" ]"
"}";
testing::Test::SetUp();
extension_ = env_.MakeExtension(base::test::ParseJsonDict(kManifest));
service_ = SavedFilesService::Get(env_.profile());
path_ = base::FilePath(FILE_PATH_LITERAL("filename.ext"));
}
void TearDown() override {
SavedFilesService::ClearMaxSequenceNumberForTest();
SavedFilesService::ClearLruSizeForTest();
testing::Test::TearDown();
}
// Check that a registered file entry has the correct value.
void CheckEntrySequenceNumber(int id, int sequence_number) {
std::string id_string = GenerateId(id);
SCOPED_TRACE(id_string);
EXPECT_TRUE(service_->IsRegistered(extension_->id(), id_string));
const SavedFileEntry* entry =
service_->GetFileEntry(extension_->id(), id_string);
ASSERT_TRUE(entry);
EXPECT_EQ(id_string, entry->id);
EXPECT_EQ(path_, entry->path);
EXPECT_TRUE(entry->is_directory);
EXPECT_EQ(sequence_number, entry->sequence_number);
}
// Check that a range of registered file entries have the correct values.
void CheckRangeEnqueuedInOrder(int start, int end) {
SavedFileEntry entry;
for (int i = start; i < end; i++) {
CheckEntrySequenceNumber(i, i + 1);
}
}
extensions::TestExtensionEnvironment env_;
raw_ptr<const extensions::Extension> extension_;
raw_ptr<SavedFilesService> service_;
base::FilePath path_;
};
TEST_F(SavedFilesServiceUnitTest, RetainTwoFilesTest) {
service_->RegisterFileEntry(extension_->id(), GenerateId(1), path_, true);
service_->RegisterFileEntry(extension_->id(), GenerateId(2), path_, true);
service_->RegisterFileEntry(extension_->id(), GenerateId(3), path_, true);
// Test that no entry has a sequence number.
TRACE_CALL(CheckEntrySequenceNumber(1, 0));
TRACE_CALL(CheckEntrySequenceNumber(2, 0));
TRACE_CALL(CheckEntrySequenceNumber(3, 0));
// Test that only entry #1 has a sequence number.
service_->EnqueueFileEntry(extension_->id(), GenerateId(1));
TRACE_CALL(CheckEntrySequenceNumber(1, 1));
TRACE_CALL(CheckEntrySequenceNumber(2, 0));
// Test that entry #1 has not changed sequence number because it is the most
// recently enqueued entry.
service_->EnqueueFileEntry(extension_->id(), GenerateId(1));
TRACE_CALL(CheckEntrySequenceNumber(1, 1));
TRACE_CALL(CheckEntrySequenceNumber(2, 0));
// Test that entry #1 is unchanged and entry #2 has been assigned the next
// sequence number.
service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
TRACE_CALL(CheckEntrySequenceNumber(1, 1));
TRACE_CALL(CheckEntrySequenceNumber(2, 2));
// Test that both entries #1 and #2 are unchanged because #2 is the most
// recently enqueued entry.
service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
TRACE_CALL(CheckEntrySequenceNumber(1, 1));
TRACE_CALL(CheckEntrySequenceNumber(2, 2));
// Test that entry #1 has been assigned the next sequence number.
service_->EnqueueFileEntry(extension_->id(), GenerateId(1));
TRACE_CALL(CheckEntrySequenceNumber(1, 3));
TRACE_CALL(CheckEntrySequenceNumber(2, 2));
TRACE_CALL(CheckEntrySequenceNumber(3, 0));
EXPECT_FALSE(service_->IsRegistered(extension_->id(), "another id"));
SavedFileEntry entry;
EXPECT_FALSE(service_->GetFileEntry(extension_->id(), "another id"));
// ClearQueueIfNoRetainPermission should be a no-op because the app has the
// fileSystem.retainEntries permission.
service_->ClearQueueIfNoRetainPermission(extension_);
TRACE_CALL(CheckEntrySequenceNumber(1, 3));
TRACE_CALL(CheckEntrySequenceNumber(2, 2));
TRACE_CALL(CheckEntrySequenceNumber(3, 0));
// Test that after a clear, retained file entries are unchanged, but file
// entries that have been registered but not retained are no longer
// registered.
service_->Clear(extension_->id());
TRACE_CALL(CheckEntrySequenceNumber(1, 3));
TRACE_CALL(CheckEntrySequenceNumber(2, 2));
EXPECT_FALSE(service_->IsRegistered(extension_->id(), GenerateId(3)));
}
TEST_F(SavedFilesServiceUnitTest, NoRetainEntriesPermissionTest) {
static const char kManifest[] =
"{\"app\": {\"background\": {\"scripts\": [\"background.js\"]}},"
"\"permissions\": [\"fileSystem\"]}";
extension_ = nullptr;
extension_ = env_.MakeExtension(base::test::ParseJsonDict(kManifest));
service_->RegisterFileEntry(extension_->id(), GenerateId(1), path_, true);
TRACE_CALL(CheckEntrySequenceNumber(1, 0));
SavedFileEntry entry;
service_->EnqueueFileEntry(extension_->id(), GenerateId(1));
TRACE_CALL(CheckEntrySequenceNumber(1, 1));
EXPECT_FALSE(service_->IsRegistered(extension_->id(), "another id"));
EXPECT_FALSE(service_->GetFileEntry(extension_->id(), "another id"));
// ClearQueueIfNoRetainPermission should clear the queue, since the app does
// not have the "retainEntries" permission.
service_->ClearQueueIfNoRetainPermission(extension_);
std::vector<SavedFileEntry> entries =
service_->GetAllFileEntries(extension_->id());
EXPECT_TRUE(entries.empty());
}
TEST_F(SavedFilesServiceUnitTest, EvictionTest) {
SavedFilesService::SetLruSizeForTest(10);
for (int i = 0; i < 10; i++) {
service_->RegisterFileEntry(extension_->id(), GenerateId(i), path_, true);
service_->EnqueueFileEntry(extension_->id(), GenerateId(i));
}
service_->RegisterFileEntry(extension_->id(), GenerateId(10), path_, true);
// Expect that entries 0 to 9 are in the queue, but 10 is not.
TRACE_CALL(CheckRangeEnqueuedInOrder(0, 10));
TRACE_CALL(CheckEntrySequenceNumber(10, 0));
service_->EnqueueFileEntry(extension_->id(), GenerateId(10));
// Expect that entries 1 to 10 are in the queue, but entry 0 is not.
TRACE_CALL(CheckEntrySequenceNumber(0, 0));
TRACE_CALL(CheckRangeEnqueuedInOrder(1, 11));
// Check that retained entries are unchanged after a clear.
service_->Clear(extension_->id());
SavedFileEntry entry;
EXPECT_FALSE(service_->GetFileEntry(extension_->id(), GenerateId(0)));
TRACE_CALL(CheckRangeEnqueuedInOrder(1, 11));
// Expect that entry 2 is now at the back of the queue, and no further entries
// have been evicted.
service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
TRACE_CALL(CheckEntrySequenceNumber(2, 12));
TRACE_CALL(CheckRangeEnqueuedInOrder(1, 1));
TRACE_CALL(CheckRangeEnqueuedInOrder(3, 11));
// Check that retained entries are unchanged after a clear.
service_->Clear(extension_->id());
TRACE_CALL(CheckEntrySequenceNumber(2, 12));
TRACE_CALL(CheckRangeEnqueuedInOrder(1, 1));
TRACE_CALL(CheckRangeEnqueuedInOrder(3, 11));
}
TEST_F(SavedFilesServiceUnitTest, SequenceNumberCompactionTest) {
SavedFilesService::SetMaxSequenceNumberForTest(8);
SavedFilesService::SetLruSizeForTest(8);
for (int i = 0; i < 4; i++) {
service_->RegisterFileEntry(extension_->id(), GenerateId(i), path_, true);
service_->EnqueueFileEntry(extension_->id(), GenerateId(i));
}
service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
service_->EnqueueFileEntry(extension_->id(), GenerateId(3));
service_->EnqueueFileEntry(extension_->id(), GenerateId(2));
// The sequence numbers should be sparse, as they have not gone over the
// limit.
TRACE_CALL(CheckEntrySequenceNumber(0, 1));
TRACE_CALL(CheckEntrySequenceNumber(1, 2));
TRACE_CALL(CheckEntrySequenceNumber(2, 7));
TRACE_CALL(CheckEntrySequenceNumber(3, 6));
service_->Clear(extension_->id());
TRACE_CALL(CheckEntrySequenceNumber(0, 1));
TRACE_CALL(CheckEntrySequenceNumber(1, 2));
TRACE_CALL(CheckEntrySequenceNumber(2, 7));
TRACE_CALL(CheckEntrySequenceNumber(3, 6));
// This should push the sequence number to the limit of 8, and trigger a
// sequence number compaction. Expect that the sequence numbers are
// contiguous from 1 to 4.
service_->EnqueueFileEntry(extension_->id(), GenerateId(3));
TRACE_CALL(CheckRangeEnqueuedInOrder(0, 4));
service_->Clear(extension_->id());
TRACE_CALL(CheckRangeEnqueuedInOrder(0, 4));
}
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