gdata: Support mounting archive files in GData cache.

chrome/browser/chromeos/gdata/gdata_file_system_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 <errno.h>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 620 matching lines @@
     expected_sub_dir_type_ = expected_sub_dir_type;
     expect_outgoing_symlink_ = false;
 
     file_system_->ClearDirtyInCache(resource_id, md5,
         base::Bind(&GDataFileSystemTest::VerifyCacheFileState,
                    base::Unretained(this)));
 
     RunAllPendingForIO();
   }
 
+  void VerifySetMountedState(const std::string& resource_id,
+                             const std::string& md5,
+                             bool to_mount,
+                             base::PlatformFileError error,
+                             const FilePath& file_path) {
+    ++num_callback_invocations_;
+    EXPECT_TRUE(file_util::PathExists(file_path));
+    EXPECT_TRUE(file_path == file_system_->GetCacheFilePath(
+        resource_id,
+        md5,
+        expected_sub_dir_type_,
+        to_mount ?
+            GDataFileSystemInterface::CACHED_FILE_MOUNTED :
+            GDataFileSystemInterface::CACHED_FILE_FROM_SERVER));
+  }
+
+  void TestSetMountedState(
+      const std::string& resource_id,
+      const std::string& md5,
+      const FilePath& file_path,
+      bool to_mount,
+      base::PlatformFileError expected_error,
+      int expected_cache_state,
+      GDataRootDirectory::CacheSubDirectoryType expected_sub_dir_type) {
+    expected_error_ = expected_error;
+    expected_cache_state_ = expected_cache_state;
+    expected_sub_dir_type_ = expected_sub_dir_type;
+    expect_outgoing_symlink_ = false;
+
+    file_system_->SetMountedState(file_path, to_mount,
+        base::Bind(&GDataFileSystemTest::VerifySetMountedState,
+                   base::Unretained(this), resource_id, md5, to_mount));
+
+    RunAllPendingForIO();
+  }
+
   void PrepareForInitCacheTest() {
     // Create gdata cache sub directories.
     ASSERT_TRUE(file_util::CreateDirectory(
         file_system_->cache_paths_[GDataRootDirectory::CACHE_TYPE_PERSISTENT]));
     ASSERT_TRUE(file_util::CreateDirectory(
         file_system_->cache_paths_[GDataRootDirectory::CACHE_TYPE_TMP]));
     ASSERT_TRUE(file_util::CreateDirectory(
         file_system_->cache_paths_[GDataRootDirectory::CACHE_TYPE_PINNED]));
     ASSERT_TRUE(file_util::CreateDirectory(
         file_system_->cache_paths_[GDataRootDirectory::CACHE_TYPE_OUTGOING]));
@@ skipping 2364 matching lines @@
   EXPECT_EQ(12345, callback_helper_->quota_bytes_total_);
 
   // Verify account meta feed is saved to cache.
   RunAllPendingForIO();
   FilePath path = file_system_->cache_paths_[
       GDataRootDirectory::CACHE_TYPE_META].Append(
           FILE_PATH_LITERAL("account_metadata.json"));
   EXPECT_TRUE(file_util::PathExists(path));
 }
 
+TEST_F(GDataFileSystemTest, MountUnmount) {
+  EXPECT_CALL(*mock_sync_client_, OnCacheInitialized()).Times(1);
+
+  FilePath file_path;
+  std::string resource_id("pdf:1a2b");
+  std::string md5("abcdef0123456789");
+
+  // First store a file to cache in the tmp subdir.
+  TestStoreToCache(resource_id, md5, GetTestFilePath("root_feed.json"),
+                   base::PLATFORM_FILE_OK, GDataFile::CACHE_STATE_PRESENT,
+                   GDataRootDirectory::CACHE_TYPE_TMP);
+
+  // Mark the file mounted.
+  num_callback_invocations_ = 0;
+  file_path = file_system_->GetCacheFilePath(
+      resource_id, md5,
+      GDataRootDirectory::CACHE_TYPE_TMP,
+      GDataFileSystemInterface::CACHED_FILE_FROM_SERVER);
+  TestSetMountedState(resource_id, md5, file_path, true,
+                      base::PLATFORM_FILE_OK,
+                      GDataFile::CACHE_STATE_PRESENT |
+                      GDataFile::CACHE_STATE_MOUNTED,
+                      GDataRootDirectory::CACHE_TYPE_PERSISTENT);
+  EXPECT_EQ(1, num_callback_invocations_);
+  EXPECT_TRUE(CacheEntryExists(resource_id, md5));
+
+  // Clear mounted state of the file.
+  num_callback_invocations_ = 0;
+  file_path = file_system_->GetCacheFilePath(
+      resource_id,
+      md5,
+      GDataRootDirectory::CACHE_TYPE_PERSISTENT,
+      GDataFileSystemInterface::CACHED_FILE_MOUNTED);
+  TestSetMountedState(resource_id, md5, file_path, false,
+                      base::PLATFORM_FILE_OK,
+                      GDataFile::CACHE_STATE_PRESENT,
+                      GDataRootDirectory::CACHE_TYPE_TMP);
+  EXPECT_EQ(1, num_callback_invocations_);
+  EXPECT_TRUE(CacheEntryExists(resource_id, md5));
+
+  // Try to remove the file.
+  num_callback_invocations_ = 0;
+  TestRemoveFromCache(resource_id, base::PLATFORM_FILE_OK);
+  EXPECT_EQ(1, num_callback_invocations_);
+}
+
 }   // namespace gdata