Add tests for sync performes about HTTP_FORBIDDEN handling

chrome/browser/chromeos/drive/sync/remove_performer_unittest.cc

Index: chrome/browser/chromeos/drive/sync/remove_performer_unittest.cc
diff --git a/chrome/browser/chromeos/drive/sync/remove_performer_unittest.cc b/chrome/browser/chromeos/drive/sync/remove_performer_unittest.cc
index 1d6ed00938f3303a6bc9ea5cf06179632434e1f2..dc98b11d69936dbb658e72d90afd0770b4f69e0a 100644
--- a/chrome/browser/chromeos/drive/sync/remove_performer_unittest.cc
+++ b/chrome/browser/chromeos/drive/sync/remove_performer_unittest.cc
@@ -148,5 +148,52 @@ TEST_F(RemovePerformerTest, RemoveLocallyCreatedFile) {
   EXPECT_EQ(FILE_ERROR_NOT_FOUND, GetLocalResourceEntryById(local_id, &entry));
 }
 
+TEST_F(RemovePerformerTest, Remove_InsufficientPermission) {
+  RemovePerformer performer(blocking_task_runner(), delegate(), scheduler(),
+                            metadata());
+
+  base::FilePath file_in_root(FILE_PATH_LITERAL("drive/root/File 1.txt"));
+
+  ResourceEntry src_entry;
+  ASSERT_EQ(FILE_ERROR_OK, GetLocalResourceEntry(file_in_root, &src_entry));
+
+  // Remove locally.
+  ResourceEntry updated_entry(src_entry);
+  updated_entry.set_parent_local_id(util::kDriveTrashDirLocalId);
+
+  FileError error = FILE_ERROR_FAILED;
+  base::PostTaskAndReplyWithResult(
+      blocking_task_runner(),
+      FROM_HERE,
+      base::Bind(&ResourceMetadata::RefreshEntry,
+                 base::Unretained(metadata()),
+                 updated_entry),
+      google_apis::test_util::CreateCopyResultCallback(&error));
+  content::RunAllBlockingPoolTasksUntilIdle();
+  EXPECT_EQ(FILE_ERROR_OK, error);
+
+  // Set user permission to forbid server side update.
+  EXPECT_EQ(google_apis::HTTP_SUCCESS, fake_service()->SetUserPermission(
+      src_entry.resource_id(), google_apis::drive::PERMISSION_ROLE_READER));
+
+  // Try to perform remove.
+  error = FILE_ERROR_FAILED;
+  performer.Remove(src_entry.local_id(),
+                   ClientContext(USER_INITIATED),
+                   google_apis::test_util::CreateCopyResultCallback(&error));
+  content::RunAllBlockingPoolTasksUntilIdle();
+  EXPECT_EQ(FILE_ERROR_OK, error);
+
+  // This should result in reverting the local change.
+  ResourceEntry result_entry;
+  EXPECT_EQ(FILE_ERROR_OK,
+            GetLocalResourceEntryById(src_entry.local_id(), &result_entry));
+  EXPECT_EQ(src_entry.parent_local_id(), result_entry.parent_local_id());
+
+  ASSERT_EQ(1U, delegate()->drive_sync_errors().size());
+  EXPECT_EQ(file_system::DRIVE_SYNC_ERROR_DELETE_WITHOUT_PERMISSION,
+            delegate()->drive_sync_errors()[0]);
+}
+
 }  // namespace internal
 }  // namespace drive