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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ash/fileapi/diversion_file_manager.h"
#include "base/files/file_util.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/test/browser_task_environment.h"
#include "net/base/io_buffer.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
using FinishDivertingResult = DiversionFileManager::FinishDivertingResult;
using StartDivertingResult = DiversionFileManager::StartDivertingResult;
using StoppedReason = DiversionFileManager::StoppedReason;
namespace {
DiversionFileManager::Callback IncrementCounterCallback(
StoppedReason expected_stopped_reason,
const storage::FileSystemURL& expected_url,
int* counter,
int delta) {
return base::BindOnce(
[](StoppedReason expected_stopped_reason,
const storage::FileSystemURL& expected_url, int* counter, int delta,
StoppedReason stopped_reason, const storage::FileSystemURL& url,
base::ScopedFD scoped_fd, int64_t file_size, base::File::Error error) {
EXPECT_EQ(expected_stopped_reason, stopped_reason);
EXPECT_EQ(expected_url, url);
*counter += delta;
},
expected_stopped_reason, expected_url, counter, delta);
}
} // namespace
class DiversionFileManagerTest : public testing::Test {
public:
DiversionFileManagerTest()
: task_environment_(base::test::TaskEnvironment::MainThreadType::IO,
base::test::TaskEnvironment::TimeSource::MOCK_TIME) {}
protected:
void SynchronousWrite(storage::FileStreamWriter& writer, std::string s) {
scoped_refptr<net::StringIOBuffer> buffer =
base::MakeRefCounted<net::StringIOBuffer>(s);
writer.Write(
buffer.get(), buffer->size(),
base::BindOnce([](base::RepeatingClosure quit_closure,
int byte_count_or_error_code) { quit_closure.Run(); },
task_environment_.QuitClosure()));
task_environment_.RunUntilQuit();
}
content::BrowserTaskEnvironment task_environment_;
};
TEST_F(DiversionFileManagerTest, ImplicitExplicitFinish) {
ASSERT_TRUE(
::content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
scoped_refptr<DiversionFileManager> dfm =
base::MakeRefCounted<DiversionFileManager>();
storage::FileSystemURL bar_url = storage::FileSystemURL::CreateForTest(
GURL("filesystem:chrome-extension://abc/external/p/q/bar"));
storage::FileSystemURL foo_url = storage::FileSystemURL::CreateForTest(
GURL("filesystem:chrome-extension://abc/external/p/q/foo"));
EXPECT_FALSE(dfm->IsDiverting(bar_url));
EXPECT_FALSE(dfm->IsDiverting(foo_url));
int bar_counter = 0;
int foo_counter = 0;
ASSERT_EQ(
StartDivertingResult::kOK,
dfm->StartDiverting(bar_url, base::Seconds(28),
IncrementCounterCallback(StoppedReason::kImplicitIdle,
bar_url, &bar_counter, 1)));
ASSERT_EQ(
StartDivertingResult::kOK,
dfm->StartDiverting(foo_url, base::Seconds(32),
IncrementCounterCallback(StoppedReason::kImplicitIdle,
foo_url, &foo_counter, 10)));
EXPECT_TRUE(dfm->IsDiverting(bar_url));
EXPECT_TRUE(dfm->IsDiverting(foo_url));
task_environment_.FastForwardBy(base::Seconds(30));
EXPECT_FALSE(dfm->IsDiverting(bar_url));
EXPECT_TRUE(dfm->IsDiverting(foo_url));
ASSERT_EQ(FinishDivertingResult::kWasNotDiverting,
dfm->FinishDiverting(bar_url, IncrementCounterCallback(
StoppedReason::kExplicitFinish,
bar_url, &bar_counter, 100)));
ASSERT_EQ(FinishDivertingResult::kOK,
dfm->FinishDiverting(foo_url, IncrementCounterCallback(
StoppedReason::kExplicitFinish,
foo_url, &foo_counter, 1000)));
EXPECT_FALSE(dfm->IsDiverting(bar_url));
EXPECT_FALSE(dfm->IsDiverting(foo_url));
EXPECT_EQ(bar_counter, 1);
EXPECT_EQ(foo_counter, 1000);
}
TEST_F(DiversionFileManagerTest, ReaderKeepsDiversionAlive) {
ASSERT_TRUE(
::content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
scoped_refptr<DiversionFileManager> dfm =
base::MakeRefCounted<DiversionFileManager>();
storage::FileSystemURL foo_url = storage::FileSystemURL::CreateForTest(
GURL("filesystem:chrome-extension://abc/external/p/q/foo"));
int foo_counter = 0;
ASSERT_EQ(
StartDivertingResult::kOK,
dfm->StartDiverting(foo_url, base::Seconds(15),
IncrementCounterCallback(StoppedReason::kImplicitIdle,
foo_url, &foo_counter, 1)));
task_environment_.FastForwardBy(base::Seconds(10));
EXPECT_TRUE(dfm->IsDiverting(foo_url));
std::unique_ptr<storage::FileStreamReader> reader =
dfm->CreateDivertedFileStreamReader(foo_url, 0);
task_environment_.FastForwardBy(base::Seconds(10));
EXPECT_TRUE(dfm->IsDiverting(foo_url));
EXPECT_EQ(foo_counter, 0);
task_environment_.FastForwardBy(base::Seconds(10));
EXPECT_TRUE(dfm->IsDiverting(foo_url));
EXPECT_EQ(foo_counter, 0);
reader.reset();
task_environment_.FastForwardBy(base::Seconds(10));
EXPECT_TRUE(dfm->IsDiverting(foo_url));
EXPECT_EQ(foo_counter, 0);
task_environment_.FastForwardBy(base::Seconds(10));
EXPECT_FALSE(dfm->IsDiverting(foo_url));
EXPECT_EQ(foo_counter, 1);
}
TEST_F(DiversionFileManagerTest, Writes) {
ASSERT_TRUE(
::content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
scoped_refptr<DiversionFileManager> dfm =
base::MakeRefCounted<DiversionFileManager>();
storage::FileSystemURL foo_url = storage::FileSystemURL::CreateForTest(
GURL("filesystem:chrome-extension://abc/external/p/q/foo"));
base::FilePath temp_dir;
ASSERT_TRUE(base::GetTempDir(&temp_dir));
dfm->OverrideTmpfileDirForTesting(temp_dir);
static constexpr auto on_implicit_idle =
[](StoppedReason stopped_reason, const storage::FileSystemURL& url,
base::ScopedFD scoped_fd, int64_t file_size, base::File::Error error) {
// We shouldn't get here. We should get to on_explicit_finish instead.
NOTREACHED();
};
ASSERT_EQ(StartDivertingResult::kOK,
dfm->StartDiverting(foo_url, base::Seconds(15),
base::BindOnce(on_implicit_idle)));
dfm->TruncateDivertedFile(foo_url, 0,
base::BindOnce([](base::File::Error result) {
EXPECT_EQ(base::File::FILE_OK, result);
}));
std::unique_ptr<storage::FileStreamWriter> writer =
dfm->CreateDivertedFileStreamWriter(foo_url, 0);
SynchronousWrite(*writer, "hi ");
dfm->GetDivertedFileInfo(
foo_url, {storage::FileSystemOperation::GetMetadataField::kSize},
base::BindOnce(
[](base::File::Error result, const base::File::Info& file_info) {
EXPECT_EQ(base::File::FILE_OK, result);
EXPECT_EQ(3, file_info.size);
}));
task_environment_.FastForwardBy(base::Seconds(20));
EXPECT_TRUE(dfm->IsDiverting(foo_url));
SynchronousWrite(*writer, "there.");
dfm->GetDivertedFileInfo(
foo_url, {storage::FileSystemOperation::GetMetadataField::kSize},
base::BindOnce(
[](base::File::Error result, const base::File::Info& file_info) {
EXPECT_EQ(base::File::FILE_OK, result);
EXPECT_EQ(9, file_info.size);
}));
task_environment_.FastForwardBy(base::Seconds(20));
EXPECT_TRUE(dfm->IsDiverting(foo_url));
bool on_explicit_finish_called = false;
static constexpr auto on_explicit_finish =
[](bool* called, StoppedReason stopped_reason,
const storage::FileSystemURL& url, base::ScopedFD scoped_fd,
int64_t file_size, base::File::Error error) {
ASSERT_TRUE(scoped_fd.is_valid());
EXPECT_EQ(file_size, 9u);
EXPECT_EQ(base::File::FILE_OK, error);
char buf[9] = {};
EXPECT_TRUE(base::ReadFromFD(scoped_fd.get(), buf));
EXPECT_EQ(buf, base::span_from_cstring("hi there."));
*called = true;
};
ASSERT_EQ(FinishDivertingResult::kOK,
dfm->FinishDiverting(foo_url,
base::BindOnce(on_explicit_finish,
&on_explicit_finish_called)));
task_environment_.FastForwardBy(base::Seconds(20));
EXPECT_FALSE(dfm->IsDiverting(foo_url));
EXPECT_FALSE(on_explicit_finish_called);
writer.reset();
EXPECT_FALSE(dfm->IsDiverting(foo_url));
EXPECT_TRUE(on_explicit_finish_called);
}
} // namespace ash
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