fileapi: Add modification time check for FileSystemFileStreamReader

webkit/fileapi/file_system_file_stream_reader_unittest.cc

 // Copyright (c) 2012 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 "webkit/blob/local_file_stream_reader.h"
+#include "webkit/fileapi/file_system_file_stream_reader.h"
 
 #include <string>
 
-#include "base/file_path.h"
-#include "base/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/platform_file.h"
 #include "base/scoped_temp_dir.h"
-#include "base/threading/thread.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "webkit/fileapi/file_system_context.h"
+#include "webkit/fileapi/file_system_file_util.h"
+#include "webkit/fileapi/file_system_operation_context.h"
+#include "webkit/fileapi/file_system_task_runners.h"
+#include "webkit/fileapi/mock_file_system_options.h"
+#include "webkit/fileapi/sandbox_mount_point_provider.h"
+#include "webkit/quota/mock_special_storage_policy.h"
 
-namespace webkit_blob {
+namespace fileapi {
 
 namespace {
 
+const char kURLOrigin[] = "http://remote/";
+const char kTestFileName[] = "test.dat";
 const char kTestData[] = "0123456789";
 const int kTestDataSize = arraysize(kTestData) - 1;
 
-void ReadFromReader(LocalFileStreamReader* reader,
-                    std::string* data, size_t size,
+void ReadFromReader(FileSystemFileStreamReader* reader,
+                    std::string* data,
+                    size_t size,
                     int* result) {
   ASSERT_TRUE(reader != NULL);
   ASSERT_TRUE(result != NULL);
   *result = net::OK;
   net::TestCompletionCallback callback;
   size_t total_bytes_read = 0;
   while (total_bytes_read < size) {
     scoped_refptr<net::IOBufferWithSize> buf(
         new net::IOBufferWithSize(size - total_bytes_read));
     int rv = reader->Read(buf, buf->size(), callback.callback());
     if (rv == net::ERR_IO_PENDING)
       rv = callback.WaitForResult();
     if (rv < 0)
       *result = rv;
     if (rv <= 0)
       break;
     total_bytes_read += rv;
     data->append(buf->data(), rv);
   }
 }
 
 void NeverCalled(int) { ADD_FAILURE(); }
-void EmptyCallback() {}
-
-void QuitLoop() {
-  MessageLoop::current()->Quit();
-}
 
 }  // namespace
 
-class LocalFileStreamReaderTest : public testing::Test {
+class FileSystemFileStreamReaderTest : public testing::Test {
  public:
-  LocalFileStreamReaderTest()
-      : message_loop_(MessageLoop::TYPE_IO),
-        file_thread_("FileUtilProxyTestFileThread") {}
+  FileSystemFileStreamReaderTest()
+      : message_loop_(MessageLoop::TYPE_IO) {}
 
   virtual void SetUp() OVERRIDE {
-    ASSERT_TRUE(file_thread_.Start());
-    ASSERT_TRUE(dir_.CreateUniqueTempDir());
+    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
 
-    file_util::WriteFile(test_path(), kTestData, kTestDataSize);
-    base::PlatformFileInfo info;
-    ASSERT_TRUE(file_util::GetFileInfo(test_path(), &info));
-    test_file_modification_time_ = info.last_modified;
+    special_storage_policy_ = new quota::MockSpecialStoragePolicy;
+    file_system_context_ =
+        new FileSystemContext(
+            FileSystemTaskRunners::CreateMockTaskRunners(),
+            special_storage_policy_,
+            NULL,
+            temp_dir_.path(),
+            CreateDisallowFileAccessOptions());
+
+    file_system_context_->sandbox_provider()->ValidateFileSystemRoot(
+        GURL(kURLOrigin), kFileSystemTypeTemporary, true,  // create
+        base::Bind(&OnValidateFileSystem));
+    MessageLoop::current()->RunAllPending();
+
+    WriteFile(kTestFileName, kTestData, kTestDataSize,
+              &test_file_modification_time_);
   }
 
   virtual void TearDown() OVERRIDE {
-    // Give another chance for deleted streams to perform Close.
     MessageLoop::current()->RunAllPending();
-    file_thread_.Stop();
   }
 
  protected:
-  LocalFileStreamReader* CreateFileReader(
-      const FilePath& path,
+  FileSystemFileStreamReader* CreateFileReader(
+      const std::string& file_name,
       int64 initial_offset,
       const base::Time& expected_modification_time) {
-    return new LocalFileStreamReader(
-            file_task_runner(),
-            path,
-            initial_offset,
-            expected_modification_time);
+    return new FileSystemFileStreamReader(file_system_context_,
+                                          GetFileSystemURL(file_name),
+                                          initial_offset,
+                                          expected_modification_time);
   }
 
-  void TouchTestFile() {
-    base::Time new_modified_time =
-        test_file_modification_time() - base::TimeDelta::FromSeconds(1);
-    ASSERT_TRUE(file_util::TouchFile(test_path(),
-                                    test_file_modification_time(),
-                                    new_modified_time));
-  }
-
-  base::MessageLoopProxy* file_task_runner() const {
-    return file_thread_.message_loop_proxy().get();
-  }
-
-  FilePath test_dir() const { return dir_.path(); }
-  FilePath test_path() const { return dir_.path().AppendASCII("test"); }
   base::Time test_file_modification_time() const {
     return test_file_modification_time_;
   }
 
-  void EnsureFileTaskFinished() {
-    file_task_runner()->PostTaskAndReply(
-        FROM_HERE, base::Bind(&EmptyCallback), base::Bind(&QuitLoop));
-    MessageLoop::current()->Run();
+  void WriteFile(const std::string& file_name,
+                 const char* buf,
+                 int buf_size,
+                 base::Time* modification_time) {
+    FileSystemFileUtil* file_util = file_system_context_->
+        sandbox_provider()->GetFileUtil(kFileSystemTypeTemporary);
+    FileSystemURL url = GetFileSystemURL(file_name);
+
+    FileSystemOperationContext context(file_system_context_);
+    context.set_allowed_bytes_growth(1024);
+
+    base::PlatformFile handle = base::kInvalidPlatformFileValue;
+    bool created = false;
+    ASSERT_EQ(base::PLATFORM_FILE_OK, file_util->CreateOrOpen(
+        &context,
+        url,
+        base::PLATFORM_FILE_CREATE | base::PLATFORM_FILE_WRITE,
+        &handle,
+        &created));
+    EXPECT_TRUE(created);
+    ASSERT_NE(base::kInvalidPlatformFileValue, handle);
+    ASSERT_EQ(buf_size,
+              base::WritePlatformFile(handle, 0 /* offset */, buf, buf_size));
+    base::ClosePlatformFile(handle);
+
+    base::PlatformFileInfo file_info;
+    FilePath platform_path;
+    ASSERT_EQ(base::PLATFORM_FILE_OK,
+              file_util->GetFileInfo(&context, url, &file_info,
+                                     &platform_path));
+    if (modification_time)
+      *modification_time = file_info.last_modified;
   }
 
  private:
+  static void OnValidateFileSystem(base::PlatformFileError result) {
+    ASSERT_EQ(base::PLATFORM_FILE_OK, result);
+  }
+
+  FileSystemURL GetFileSystemURL(const std::string& file_name) {
+    return FileSystemURL(GURL(kURLOrigin),
+                         kFileSystemTypeTemporary,
+                         FilePath().AppendASCII(file_name));
+  }
+
   MessageLoop message_loop_;
-  base::Thread file_thread_;
-  ScopedTempDir dir_;
+  ScopedTempDir temp_dir_;
+  scoped_refptr<quota::MockSpecialStoragePolicy> special_storage_policy_;
+  scoped_refptr<FileSystemContext> file_system_context_;
   base::Time test_file_modification_time_;
 };
 
-TEST_F(LocalFileStreamReaderTest, NonExistent) {
-  FilePath nonexistent_path = test_dir().AppendASCII("nonexistent");
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(nonexistent_path, 0, base::Time()));
+TEST_F(FileSystemFileStreamReaderTest, NonExistent) {
+  const char kFileName[] = "nonexistent";
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kFileName, 0, base::Time()));
   int result = 0;
   std::string data;
   ReadFromReader(reader.get(), &data, 10, &result);
   ASSERT_EQ(net::ERR_FILE_NOT_FOUND, result);
   ASSERT_EQ(0U, data.size());
 }
 
-TEST_F(LocalFileStreamReaderTest, Empty) {
-  FilePath empty_path = test_dir().AppendASCII("empty");
-  base::PlatformFileError error = base::PLATFORM_FILE_OK;
-  base::PlatformFile file = base::CreatePlatformFile(
-      empty_path,
-      base::PLATFORM_FILE_CREATE | base::PLATFORM_FILE_READ,
-      NULL, &error);
-  ASSERT_EQ(base::PLATFORM_FILE_OK, error);
-  ASSERT_NE(base::kInvalidPlatformFileValue, file);
-  base::ClosePlatformFile(file);
+TEST_F(FileSystemFileStreamReaderTest, Empty) {
+  const char kFileName[] = "empty";
+  WriteFile(kFileName, NULL, 0, NULL);
 
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(empty_path, 0, base::Time()));
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kFileName, 0, base::Time()));
   int result = 0;
   std::string data;
   ReadFromReader(reader.get(), &data, 10, &result);
   ASSERT_EQ(net::OK, result);
   ASSERT_EQ(0U, data.size());
 
   net::TestInt64CompletionCallback callback;
   result = reader->GetLength(callback.callback());
   if (result == net::ERR_IO_PENDING)
     result = callback.WaitForResult();
   ASSERT_EQ(0, result);
 }
 
-TEST_F(LocalFileStreamReaderTest, GetLengthNormal) {
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(test_path(), 0, test_file_modification_time()));
+TEST_F(FileSystemFileStreamReaderTest, GetLengthNormal) {
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kTestFileName, 0, test_file_modification_time()));
   net::TestInt64CompletionCallback callback;
   int result = reader->GetLength(callback.callback());
   if (result == net::ERR_IO_PENDING)
     result = callback.WaitForResult();
   ASSERT_EQ(kTestDataSize, result);
 }
 
-TEST_F(LocalFileStreamReaderTest, GetLengthAfterModified) {
-  // Touch file so that the file's modification time becomes different
-  // from what we expect.
-  TouchTestFile();
+TEST_F(FileSystemFileStreamReaderTest, GetLengthAfterModified) {
+  // Pass a fake expected modifictaion time so that the expectation fails.
+  base::Time fake_expected_modification_time =
+      test_file_modification_time() - base::TimeDelta::FromSeconds(10);
 
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(test_path(), 0, test_file_modification_time()));
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kTestFileName, 0, fake_expected_modification_time));
   net::TestInt64CompletionCallback callback;
   int result = reader->GetLength(callback.callback());
   if (result == net::ERR_IO_PENDING)
     result = callback.WaitForResult();
   ASSERT_EQ(net::ERR_UPLOAD_FILE_CHANGED, result);
 
   // With NULL expected modification time this should work.
-  reader.reset(CreateFileReader(test_path(), 0, base::Time()));
+  reader.reset(CreateFileReader(kTestFileName, 0, base::Time()));
   result = reader->GetLength(callback.callback());
   if (result == net::ERR_IO_PENDING)
     result = callback.WaitForResult();
   ASSERT_EQ(kTestDataSize, result);
 }
 
-TEST_F(LocalFileStreamReaderTest, GetLengthWithOffset) {
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(test_path(), 3, base::Time()));
+TEST_F(FileSystemFileStreamReaderTest, GetLengthWithOffset) {
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kTestFileName, 3, base::Time()));
   net::TestInt64CompletionCallback callback;
   int result = reader->GetLength(callback.callback());
   if (result == net::ERR_IO_PENDING)
     result = callback.WaitForResult();
   // Initial offset does not affect the result of GetLength.
   ASSERT_EQ(kTestDataSize, result);
 }
 
-TEST_F(LocalFileStreamReaderTest, ReadNormal) {
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(test_path(), 0, test_file_modification_time()));
+TEST_F(FileSystemFileStreamReaderTest, ReadNormal) {
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kTestFileName, 0, test_file_modification_time()));
   int result = 0;
   std::string data;
   ReadFromReader(reader.get(), &data, kTestDataSize, &result);
   ASSERT_EQ(net::OK, result);
   ASSERT_EQ(kTestData, data);
 }
 
-TEST_F(LocalFileStreamReaderTest, ReadAfterModified) {
-  // Touch file so that the file's modification time becomes different
-  // from what we expect.
-  TouchTestFile();
+TEST_F(FileSystemFileStreamReaderTest, ReadAfterModified) {
+  // Pass a fake expected modifictaion time so that the expectation fails.
+  base::Time fake_expected_modification_time =
+      test_file_modification_time() - base::TimeDelta::FromSeconds(10);
 
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(test_path(), 0, test_file_modification_time()));
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kTestFileName, 0, fake_expected_modification_time));
   int result = 0;
   std::string data;
   ReadFromReader(reader.get(), &data, kTestDataSize, &result);
   ASSERT_EQ(net::ERR_UPLOAD_FILE_CHANGED, result);
   ASSERT_EQ(0U, data.size());
 
   // With NULL expected modification time this should work.
   data.clear();
-  reader.reset(CreateFileReader(test_path(), 0, base::Time()));
+  reader.reset(CreateFileReader(kTestFileName, 0, base::Time()));
   ReadFromReader(reader.get(), &data, kTestDataSize, &result);
   ASSERT_EQ(net::OK, result);
   ASSERT_EQ(kTestData, data);
 }
 
-TEST_F(LocalFileStreamReaderTest, ReadWithOffset) {
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(test_path(), 3, base::Time()));
+TEST_F(FileSystemFileStreamReaderTest, ReadWithOffset) {
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kTestFileName, 3, base::Time()));
   int result = 0;
   std::string data;
   ReadFromReader(reader.get(), &data, kTestDataSize, &result);
   ASSERT_EQ(net::OK, result);
   ASSERT_EQ(&kTestData[3], data);
 }
 
-TEST_F(LocalFileStreamReaderTest, DeleteWithUnfinishedRead) {
-  scoped_ptr<LocalFileStreamReader> reader(
-      CreateFileReader(test_path(), 0, base::Time()));
+TEST_F(FileSystemFileStreamReaderTest, DeleteWithUnfinishedRead) {
+  scoped_ptr<FileSystemFileStreamReader> reader(
+      CreateFileReader(kTestFileName, 0, base::Time()));
 
   net::TestCompletionCallback callback;
   scoped_refptr<net::IOBufferWithSize> buf(
       new net::IOBufferWithSize(kTestDataSize));
   int rv = reader->Read(buf, buf->size(), base::Bind(&NeverCalled));
   ASSERT_TRUE(rv == net::ERR_IO_PENDING || rv >= 0);
 
   // Delete immediately.
   // Should not crash; nor should NeverCalled be callback.
   reader.reset();
-  EnsureFileTaskFinished();
 }
 
-}  // namespace webkit_blob
+}  // namespace fileapi