[fsp] Add support for providing thumbnails.

chrome/browser/chromeos/file_system_provider/fileapi/file_stream_writer_unittest.cc

 // Copyright 2014 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 "chrome/browser/chromeos/file_system_provider/fileapi/file_stream_writer.h"
 
 #include <string>
 #include <vector>
 
 #include "base/files/file.h"
@@ skipping 116 matching lines @@
     const int result = writer.Write(io_buffer.get(),
                                     sizeof(kTextToWrite) - 1,
                                     base::Bind(&LogValue, &write_log));
     EXPECT_EQ(net::ERR_IO_PENDING, result);
     base::RunLoop().RunUntilIdle();
 
     ASSERT_EQ(1u, write_log.size());
     EXPECT_LT(0, write_log[0]);
     EXPECT_EQ(sizeof(kTextToWrite) - 1, static_cast<size_t>(write_log[0]));
 
-    FakeEntry entry;
-    ASSERT_TRUE(provided_file_system_->GetEntry(
-        base::FilePath::FromUTF8Unsafe(kFakeFilePath), &entry));
-    EXPECT_EQ(kTextToWrite, entry.contents.substr(0, sizeof(kTextToWrite) - 1));
+    const FakeEntry* const entry = provided_file_system_->GetEntry(
+        base::FilePath::FromUTF8Unsafe(kFakeFilePath));
+    ASSERT_TRUE(entry);
+
+    EXPECT_EQ(kTextToWrite,
+              entry->contents.substr(0, sizeof(kTextToWrite) - 1));
   }
 
   // Write additional data to be sure, that the writer's offset is shifted
   // properly.
   {
     const int result = writer.Write(io_buffer.get(),
                                     sizeof(kTextToWrite) - 1,
                                     base::Bind(&LogValue, &write_log));
     EXPECT_EQ(net::ERR_IO_PENDING, result);
     base::RunLoop().RunUntilIdle();
 
     ASSERT_EQ(2u, write_log.size());
     EXPECT_LT(0, write_log[0]);
     EXPECT_EQ(sizeof(kTextToWrite) - 1, static_cast<size_t>(write_log[0]));
 
-    FakeEntry entry;
-    ASSERT_TRUE(provided_file_system_->GetEntry(
-        base::FilePath::FromUTF8Unsafe(kFakeFilePath), &entry));
+    const FakeEntry* const entry = provided_file_system_->GetEntry(
+        base::FilePath::FromUTF8Unsafe(kFakeFilePath));
+    ASSERT_TRUE(entry);
 
     // The testing text is written twice.
     const std::string expected_contents =
         std::string(kTextToWrite) + kTextToWrite;
     EXPECT_EQ(expected_contents,
-              entry.contents.substr(0, expected_contents.size()));
+              entry->contents.substr(0, expected_contents.size()));
   }
 }
 
 TEST_F(FileSystemProviderFileStreamWriter, Cancel) {
   std::vector<int> write_log;
 
   const int64 initial_offset = 0;
   FileStreamWriter writer(file_url_, initial_offset);
   scoped_refptr<net::IOBuffer> io_buffer(new net::StringIOBuffer(kTextToWrite));
 
@@ skipping 25 matching lines @@
   EXPECT_EQ(net::ERR_IO_PENDING, result);
   base::RunLoop().RunUntilIdle();
 
   ASSERT_EQ(1u, write_log.size());
   EXPECT_EQ(net::ERR_FILE_NOT_FOUND, write_log[0]);
 }
 
 TEST_F(FileSystemProviderFileStreamWriter, Write_Append) {
   std::vector<int> write_log;
 
-  FakeEntry entry_before;
-  ASSERT_TRUE(provided_file_system_->GetEntry(
-      base::FilePath::FromUTF8Unsafe(kFakeFilePath), &entry_before));
+  const FakeEntry* const entry = provided_file_system_->GetEntry(
+      base::FilePath::FromUTF8Unsafe(kFakeFilePath));
+  ASSERT_TRUE(entry);
 
-  const int64 initial_offset = entry_before.metadata.size;
+  const int64 initial_offset = entry->metadata->size;
   ASSERT_LT(0, initial_offset);
 
   FileStreamWriter writer(file_url_, initial_offset);
   scoped_refptr<net::IOBuffer> io_buffer(new net::StringIOBuffer(kTextToWrite));
 
   const int result = writer.Write(io_buffer.get(),
                                   sizeof(kTextToWrite) - 1,
                                   base::Bind(&LogValue, &write_log));
   EXPECT_EQ(net::ERR_IO_PENDING, result);
   base::RunLoop().RunUntilIdle();
 
   ASSERT_EQ(1u, write_log.size());
   EXPECT_EQ(sizeof(kTextToWrite) - 1, static_cast<size_t>(write_log[0]));
 
-  FakeEntry entry_after;
-  ASSERT_TRUE(provided_file_system_->GetEntry(
-      base::FilePath::FromUTF8Unsafe(kFakeFilePath), &entry_after));
-  const std::string expected_contents = entry_before.contents + kTextToWrite;
-  EXPECT_EQ(expected_contents, entry_after.contents);
+  const std::string expected_contents = entry->contents + kTextToWrite;
+  EXPECT_EQ(expected_contents, entry->contents);
 }
 
 }  // namespace file_system_provider
 }  // namespace chromeos