123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/files/important_file_writer.h"
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#include "base/compiler_specific.h"
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#include "base/file_util.h"
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#include "base/files/file_path.h"
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#include "base/files/scoped_temp_dir.h"
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#include "base/logging.h"
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#include "base/message_loop/message_loop.h"
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#include "base/run_loop.h"
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#include "base/threading/thread.h"
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#include "base/time/time.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace {
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std::string GetFileContent(const FilePath& path) {
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std::string content;
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if (!file_util::ReadFileToString(path, &content)) {
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NOTREACHED();
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}
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return content;
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}
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class DataSerializer : public ImportantFileWriter::DataSerializer {
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public:
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explicit DataSerializer(const std::string& data) : data_(data) {
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}
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virtual bool SerializeData(std::string* output) OVERRIDE {
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output->assign(data_);
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return true;
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}
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private:
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const std::string data_;
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};
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} // namespace
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class ImportantFileWriterTest : public testing::Test {
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public:
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ImportantFileWriterTest() { }
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virtual void SetUp() {
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ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
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file_ = temp_dir_.path().AppendASCII("test-file");
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}
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protected:
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FilePath file_;
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MessageLoop loop_;
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private:
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ScopedTempDir temp_dir_;
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};
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TEST_F(ImportantFileWriterTest, Basic) {
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ImportantFileWriter writer(file_, MessageLoopProxy::current().get());
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EXPECT_FALSE(PathExists(writer.path()));
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writer.WriteNow("foo");
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RunLoop().RunUntilIdle();
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ASSERT_TRUE(PathExists(writer.path()));
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EXPECT_EQ("foo", GetFileContent(writer.path()));
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}
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TEST_F(ImportantFileWriterTest, ScheduleWrite) {
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ImportantFileWriter writer(file_, MessageLoopProxy::current().get());
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writer.set_commit_interval(TimeDelta::FromMilliseconds(25));
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EXPECT_FALSE(writer.HasPendingWrite());
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DataSerializer serializer("foo");
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writer.ScheduleWrite(&serializer);
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EXPECT_TRUE(writer.HasPendingWrite());
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MessageLoop::current()->PostDelayedTask(
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FROM_HERE,
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MessageLoop::QuitWhenIdleClosure(),
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TimeDelta::FromMilliseconds(100));
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MessageLoop::current()->Run();
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EXPECT_FALSE(writer.HasPendingWrite());
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ASSERT_TRUE(PathExists(writer.path()));
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EXPECT_EQ("foo", GetFileContent(writer.path()));
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}
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TEST_F(ImportantFileWriterTest, DoScheduledWrite) {
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ImportantFileWriter writer(file_, MessageLoopProxy::current().get());
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EXPECT_FALSE(writer.HasPendingWrite());
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DataSerializer serializer("foo");
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writer.ScheduleWrite(&serializer);
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EXPECT_TRUE(writer.HasPendingWrite());
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writer.DoScheduledWrite();
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MessageLoop::current()->PostDelayedTask(
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FROM_HERE,
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MessageLoop::QuitWhenIdleClosure(),
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TimeDelta::FromMilliseconds(100));
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MessageLoop::current()->Run();
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EXPECT_FALSE(writer.HasPendingWrite());
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ASSERT_TRUE(PathExists(writer.path()));
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EXPECT_EQ("foo", GetFileContent(writer.path()));
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}
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TEST_F(ImportantFileWriterTest, BatchingWrites) {
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ImportantFileWriter writer(file_, MessageLoopProxy::current().get());
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writer.set_commit_interval(TimeDelta::FromMilliseconds(25));
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DataSerializer foo("foo"), bar("bar"), baz("baz");
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writer.ScheduleWrite(&foo);
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writer.ScheduleWrite(&bar);
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writer.ScheduleWrite(&baz);
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MessageLoop::current()->PostDelayedTask(
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FROM_HERE,
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MessageLoop::QuitWhenIdleClosure(),
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TimeDelta::FromMilliseconds(100));
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MessageLoop::current()->Run();
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ASSERT_TRUE(PathExists(writer.path()));
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EXPECT_EQ("baz", GetFileContent(writer.path()));
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}
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} // namespace base
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