Support removeRecursively and new copy/move behaviors added to the spec recently.

http://lists.w3.org/Archives/Public/public-webapps/2010JulSep/1101.html
> For a move/copy of a file on top of existing file, or a directory on
> top of an existing empty directory, you get an automatic overwrite.
> A move/copy of a file on top of an existing directory, or of a
> directory on top of an existing file, will always fail.
> A move/copy of a file or directory on top of an existing non-empty
> directory will always fail.

BUG=32277
TEST=FileSystemOperationTest.*

Review URL: http://codereview.chromium.org/3567012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@61480 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 208 insertions, 42 deletions

diff --git a/webkit/fileapi/file_system_operation.cc b/webkit/fileapi/file_system_operation.cc
index e636420..29336a8 100644
--- a/webkit/fileapi/file_system_operation.cc
+++ b/webkit/fileapi/file_system_operation.cc
@@ -118,14 +118,15 @@ void FileSystemOperation::ReadDirectory(const FilePath& path) {
           &FileSystemOperation::DidReadDirectory));
 }
 
-void FileSystemOperation::Remove(const FilePath& path) {
+void FileSystemOperation::Remove(const FilePath& path, bool recursive) {
 #ifndef NDEBUG
   DCHECK(kOperationNone == pending_operation_);
   pending_operation_ = kOperationRemove;
 #endif
 
-  base::FileUtilProxy::Delete(proxy_, path, callback_factory_.NewCallback(
-      &FileSystemOperation::DidFinishFileOperation));
+  base::FileUtilProxy::Delete(proxy_, path, recursive,
+      callback_factory_.NewCallback(
+          &FileSystemOperation::DidFinishFileOperation));
 }
 
 void FileSystemOperation::Write(
diff --git a/webkit/fileapi/file_system_operation.h b/webkit/fileapi/file_system_operation.h
index ab6d56c..ba65b7d 100644
--- a/webkit/fileapi/file_system_operation.h
+++ b/webkit/fileapi/file_system_operation.h
@@ -45,9 +45,6 @@ class FileSystemOperation {
   void Copy(const FilePath& src_path,
             const FilePath& dest_path);
 
-  // If |dest_path| exists and is a directory, behavior is unspecified or
-  // varies for different platforms. TODO(kkanetkar): Fix this as per spec
-  // when it is addressed in spec.
   void Move(const FilePath& src_path,
             const FilePath& dest_path);
 
@@ -59,7 +56,7 @@ class FileSystemOperation {
 
   void ReadDirectory(const FilePath& path);
 
-  void Remove(const FilePath& path);
+  void Remove(const FilePath& path, bool recursive);
 
   void Write(const FilePath& path, const GURL& blob_url, int64 offset);
 
diff --git a/webkit/fileapi/file_system_operation_unittest.cc b/webkit/fileapi/file_system_operation_unittest.cc
index 60db566..7e33cce 100644
--- a/webkit/fileapi/file_system_operation_unittest.cc
+++ b/webkit/fileapi/file_system_operation_unittest.cc
@@ -89,9 +89,7 @@ class FileSystemOperationTest : public testing::Test {
   }
 
  protected:
-  // Common temp base for all non-existing file/dir path test cases.
-  // This is in case a dir on test machine exists. It's better to
-  // create temp and then create non-existing file paths under it.
+  // Common temp base for nondestructive uses.
   ScopedTempDir base_;
 
   int request_id_;
@@ -114,9 +112,12 @@ TEST_F(FileSystemOperationTest, TestMoveFailureSrcDoesntExist) {
 
 
 TEST_F(FileSystemOperationTest, TestMoveFailureContainsPath) {
-  ScopedTempDir dir_under_base;
-  dir_under_base.CreateUniqueTempDirUnderPath(base_.path());
-  operation()->Move(base_.path(), dir_under_base.path());
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+  FilePath dest_dir_path;
+  ASSERT_TRUE(file_util::CreateTemporaryFileInDir(src_dir.path(),
+                                                  &dest_dir_path));
+  operation()->Move(src_dir.path(), dest_dir_path);
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(base::PLATFORM_FILE_ERROR_INVALID_OPERATION,
             mock_dispatcher_->status());
@@ -125,14 +126,51 @@ TEST_F(FileSystemOperationTest, TestMoveFailureContainsPath) {
 
 TEST_F(FileSystemOperationTest, TestMoveFailureSrcDirExistsDestFile) {
   // Src exists and is dir. Dest is a file.
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+
   ScopedTempDir dest_dir;
   ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
   FilePath dest_file;
   file_util::CreateTemporaryFileInDir(dest_dir.path(), &dest_file);
 
-  operation()->Move(base_.path(), dest_file);
+  operation()->Move(src_dir.path(), dest_file);
   MessageLoop::current()->RunAllPending();
-  EXPECT_EQ(base::PLATFORM_FILE_ERROR_EXISTS, mock_dispatcher_->status());
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_NOT_A_DIRECTORY,
+            mock_dispatcher_->status());
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+}
+
+TEST_F(FileSystemOperationTest, TestMoveFailureSrcFileExistsDestNonEmptyDir) {
+  // Src exists and is a directory. Dest is a non-empty directory.
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+
+  ScopedTempDir dest_dir;
+  ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
+  FilePath child_file;
+  file_util::CreateTemporaryFileInDir(dest_dir.path(), &child_file);
+
+  operation()->Move(src_dir.path(), dest_dir.path());
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_NOT_EMPTY, mock_dispatcher_->status());
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+}
+
+TEST_F(FileSystemOperationTest, TestMoveFailureSrcFileExistsDestDir) {
+  // Src exists and is a file. Dest is a directory.
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+  FilePath src_file;
+  file_util::CreateTemporaryFileInDir(src_dir.path(), &src_file);
+
+  ScopedTempDir dest_dir;
+  ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
+
+  operation()->Move(src_file, dest_dir.path());
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_NOT_A_FILE,
+            mock_dispatcher_->status());
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 }
 
@@ -142,7 +180,7 @@ TEST_F(FileSystemOperationTest, TestMoveFailureDestParentDoesntExist) {
   ASSERT_TRUE(src_dir.CreateUniqueTempDir());
   FilePath nonexisting_file = base_.path().Append(
       FILE_PATH_LITERAL("NonexistingDir")).Append(
-          FILE_PATH_LITERAL("NonexistingFile"));;
+          FILE_PATH_LITERAL("NonexistingFile"));
 
   operation()->Move(src_dir.path(), nonexisting_file);
   MessageLoop::current()->RunAllPending();
@@ -185,6 +223,57 @@ TEST_F(FileSystemOperationTest, TestMoveSuccessSrcFileAndNew) {
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 }
 
+TEST_F(FileSystemOperationTest, TestMoveSuccessSrcDirAndOverwrite) {
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+
+  ScopedTempDir dest_dir;
+  ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
+
+  operation()->Move(src_dir.path(), dest_dir.path());
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+  EXPECT_FALSE(file_util::DirectoryExists(src_dir.path()));
+
+  // Make sure we've overwritten but not moved the source under the |dest_dir|.
+  EXPECT_TRUE(file_util::DirectoryExists(dest_dir.path()));
+  EXPECT_FALSE(file_util::DirectoryExists(
+      dest_dir.path().Append(src_dir.path().BaseName())));
+}
+
+TEST_F(FileSystemOperationTest, TestMoveSuccessSrcDirAndNew) {
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+
+  ScopedTempDir dir;
+  ASSERT_TRUE(dir.CreateUniqueTempDir());
+  FilePath dest_dir_path(dir.path().Append(FILE_PATH_LITERAL("NewDirectory")));
+
+  operation()->Move(src_dir.path(), dest_dir_path);
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+  EXPECT_FALSE(file_util::DirectoryExists(src_dir.path()));
+  EXPECT_TRUE(file_util::DirectoryExists(dest_dir_path));
+}
+
+TEST_F(FileSystemOperationTest, TestMoveSuccessSrcDirRecursive) {
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+  FilePath child_file;
+  file_util::CreateTemporaryFileInDir(src_dir.path(), &child_file);
+
+  ScopedTempDir dest_dir;
+  ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
+
+  operation()->Move(src_dir.path(), dest_dir.path());
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+  EXPECT_TRUE(FileExists(dest_dir.path().Append(child_file.BaseName())));
+}
+
 TEST_F(FileSystemOperationTest, TestCopyFailureSrcDoesntExist) {
   FilePath src(base_.path().Append(FILE_PATH_LITERAL("a")));
   FilePath dest(base_.path().Append(FILE_PATH_LITERAL("b")));
@@ -195,27 +284,68 @@ TEST_F(FileSystemOperationTest, TestCopyFailureSrcDoesntExist) {
 }
 
 TEST_F(FileSystemOperationTest, TestCopyFailureContainsPath) {
-  FilePath file_under_base = base_.path().Append(FILE_PATH_LITERAL("b"));
-  operation()->Copy(base_.path(), file_under_base);
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+  FilePath dest_dir_path;
+  ASSERT_TRUE(file_util::CreateTemporaryFileInDir(src_dir.path(),
+                                                  &dest_dir_path));
+  operation()->Copy(src_dir.path(), dest_dir_path);
   MessageLoop::current()->RunAllPending();
-  EXPECT_EQ(base::PLATFORM_FILE_ERROR_FAILED, mock_dispatcher_->status());
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_INVALID_OPERATION,
+            mock_dispatcher_->status());
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 }
 
 TEST_F(FileSystemOperationTest, TestCopyFailureSrcDirExistsDestFile) {
   // Src exists and is dir. Dest is a file.
-  ScopedTempDir dir;
-  ASSERT_TRUE(dir.CreateUniqueTempDir());
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+
+  ScopedTempDir dest_dir;
+  ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
   FilePath dest_file;
-  file_util::CreateTemporaryFileInDir(dir.path(), &dest_file);
+  file_util::CreateTemporaryFileInDir(dest_dir.path(), &dest_file);
 
-  operation()->Copy(base_.path(), dest_file);
+  operation()->Copy(src_dir.path(), dest_file);
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(base::PLATFORM_FILE_ERROR_NOT_A_DIRECTORY,
             mock_dispatcher_->status());
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 }
 
+TEST_F(FileSystemOperationTest, TestCopyFailureSrcFileExistsDestNonEmptyDir) {
+  // Src exists and is a directory. Dest is a non-empty directory.
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+
+  ScopedTempDir dest_dir;
+  ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
+  FilePath child_file;
+  file_util::CreateTemporaryFileInDir(dest_dir.path(), &child_file);
+
+  operation()->Copy(src_dir.path(), dest_dir.path());
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_NOT_EMPTY, mock_dispatcher_->status());
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+}
+
+TEST_F(FileSystemOperationTest, TestCopyFailureSrcFileExistsDestDir) {
+  // Src exists and is a file. Dest is a directory.
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+  FilePath src_file;
+  file_util::CreateTemporaryFileInDir(src_dir.path(), &src_file);
+
+  ScopedTempDir dest_dir;
+  ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
+
+  operation()->Copy(src_file, dest_dir.path());
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_NOT_A_FILE,
+            mock_dispatcher_->status());
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+}
+
 TEST_F(FileSystemOperationTest, TestCopyFailureDestParentDoesntExist) {
   // Dest. parent path does not exist.
   ScopedTempDir dir;
@@ -268,7 +398,7 @@ TEST_F(FileSystemOperationTest, TestCopySuccessSrcFileAndNew) {
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 }
 
-TEST_F(FileSystemOperationTest, TestCopySuccessSrcDir) {
+TEST_F(FileSystemOperationTest, TestCopySuccessSrcDirAndOverwrite) {
   ScopedTempDir src_dir;
   ASSERT_TRUE(src_dir.CreateUniqueTempDir());
 
@@ -279,24 +409,42 @@ TEST_F(FileSystemOperationTest, TestCopySuccessSrcDir) {
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+
+  // Make sure we've overwritten but not copied the source under the |dest_dir|.
+  EXPECT_TRUE(file_util::DirectoryExists(dest_dir.path()));
+  EXPECT_FALSE(file_util::DirectoryExists(
+      dest_dir.path().Append(src_dir.path().BaseName())));
 }
 
-TEST_F(FileSystemOperationTest, TestCopyDestParentExistsSuccess) {
+TEST_F(FileSystemOperationTest, TestCopySuccessSrcDirAndNew) {
   ScopedTempDir src_dir;
   ASSERT_TRUE(src_dir.CreateUniqueTempDir());
-  FilePath src_file;
-  file_util::CreateTemporaryFileInDir(src_dir.path(), &src_file);
+
+  ScopedTempDir dir;
+  ASSERT_TRUE(dir.CreateUniqueTempDir());
+  FilePath dest_dir(dir.path().Append(FILE_PATH_LITERAL("NewDirectory")));
+
+  operation()->Copy(src_dir.path(), dest_dir);
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+  EXPECT_TRUE(file_util::DirectoryExists(dest_dir));
+}
+
+TEST_F(FileSystemOperationTest, TestCopySuccessSrcDirRecursive) {
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+  FilePath child_file;
+  file_util::CreateTemporaryFileInDir(src_dir.path(), &child_file);
 
   ScopedTempDir dest_dir;
   ASSERT_TRUE(dest_dir.CreateUniqueTempDir());
 
-  operation()->Copy(src_file, dest_dir.path());
+  operation()->Copy(src_dir.path(), dest_dir.path());
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
-
-  FilePath src_filename(src_file.BaseName());
-  EXPECT_TRUE(FileExists(dest_dir.path().Append(src_filename)));
+  EXPECT_TRUE(FileExists(dest_dir.path().Append(child_file.BaseName())));
 }
 
 TEST_F(FileSystemOperationTest, TestCreateFileFailure) {
@@ -354,7 +502,6 @@ TEST_F(FileSystemOperationTest,
   // Dest. parent path does not exist.
   FilePath nonexisting(base_.path().Append(
       FILE_PATH_LITERAL("DirDoesntExist")));
-  file_util::EnsureEndsWithSeparator(&nonexisting);
   FilePath nonexisting_file = nonexisting.Append(
       FILE_PATH_LITERAL("FileDoesntExist"));
   operation()->CreateDirectory(nonexisting_file, false, false);
@@ -365,7 +512,9 @@ TEST_F(FileSystemOperationTest,
 
 TEST_F(FileSystemOperationTest, TestCreateDirFailureDirExists) {
   // Exclusive and dir existing at path.
-  operation()->CreateDirectory(base_.path(), true, false);
+  ScopedTempDir src_dir;
+  ASSERT_TRUE(src_dir.CreateUniqueTempDir());
+  operation()->CreateDirectory(src_dir.path(), true, false);
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(base::PLATFORM_FILE_ERROR_EXISTS, mock_dispatcher_->status());
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
@@ -393,7 +542,8 @@ TEST_F(FileSystemOperationTest, TestCreateDirSuccess) {
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 
   // Dir doesn't exist.
-  FilePath nonexisting_dir_path(FILE_PATH_LITERAL("nonexistingdir"));
+  FilePath nonexisting_dir_path(base_.path().Append(
+      FILE_PATH_LITERAL("nonexistingdir")));
   operation()->CreateDirectory(nonexisting_dir_path, false, false);
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
@@ -403,9 +553,7 @@ TEST_F(FileSystemOperationTest, TestCreateDirSuccess) {
 
 TEST_F(FileSystemOperationTest, TestCreateDirSuccessExclusive) {
   // Dir doesn't exist.
-  ScopedTempDir dir;
-  ASSERT_TRUE(dir.CreateUniqueTempDir());
-  FilePath nonexisting_dir_path(dir.path().Append(
+  FilePath nonexisting_dir_path(base_.path().Append(
       FILE_PATH_LITERAL("nonexistingdir")));
 
   operation()->CreateDirectory(nonexisting_dir_path, true, false);
@@ -521,12 +669,13 @@ TEST_F(FileSystemOperationTest, TestRemoveFailure) {
       FILE_PATH_LITERAL("NonExistingDir")));
   file_util::EnsureEndsWithSeparator(&nonexisting);
 
-  operation()->Remove(nonexisting);
+  operation()->Remove(nonexisting, false /* recursive */);
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(base::PLATFORM_FILE_ERROR_NOT_FOUND, mock_dispatcher_->status());
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 
-  // By spec recursive is always false. Non-empty dir should fail.
+  // It's an error to try to remove a non-empty directory if recursive flag
+  // is false.
   //      parent_dir
   //       |       |
   //  child_dir  child_file
@@ -539,9 +688,9 @@ TEST_F(FileSystemOperationTest, TestRemoveFailure) {
   ASSERT_TRUE(file_util::CreateTemporaryDirInDir(
       parent_dir.path(), FILE_PATH_LITERAL("child_dir"), &child_dir));
 
-  operation()->Remove(parent_dir.path());
+  operation()->Remove(parent_dir.path(), false /* recursive */);
   MessageLoop::current()->RunAllPending();
-  EXPECT_EQ(base::PLATFORM_FILE_ERROR_INVALID_OPERATION,
+  EXPECT_EQ(base::PLATFORM_FILE_ERROR_NOT_EMPTY,
             mock_dispatcher_->status());
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 }
@@ -551,11 +700,30 @@ TEST_F(FileSystemOperationTest, TestRemoveSuccess) {
   ASSERT_TRUE(empty_dir.CreateUniqueTempDir());
   EXPECT_TRUE(file_util::DirectoryExists(empty_dir.path()));
 
-  operation()->Remove(empty_dir.path());
+  operation()->Remove(empty_dir.path(), false /* recursive */);
   MessageLoop::current()->RunAllPending();
   EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
   EXPECT_FALSE(file_util::DirectoryExists(empty_dir.path()));
   EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
+
+  // Removing a non-empty directory with recursive flag == true should be ok.
+  //      parent_dir
+  //       |       |
+  //  child_dir  child_file
+  // Verify deleting parent_dir.
+  ScopedTempDir parent_dir;
+  ASSERT_TRUE(parent_dir.CreateUniqueTempDir());
+  FilePath child_file;
+  file_util::CreateTemporaryFileInDir(parent_dir.path(), &child_file);
+  FilePath child_dir;
+  ASSERT_TRUE(file_util::CreateTemporaryDirInDir(
+      parent_dir.path(), FILE_PATH_LITERAL("child_dir"), &child_dir));
+
+  operation()->Remove(parent_dir.path(), true /* recursive */);
+  MessageLoop::current()->RunAllPending();
+  EXPECT_EQ(kFileOperationSucceeded, mock_dispatcher_->status());
+  EXPECT_FALSE(file_util::DirectoryExists(parent_dir.path()));
+  EXPECT_EQ(request_id_, mock_dispatcher_->request_id());
 }
 
 TEST_F(FileSystemOperationTest, TestTruncate) {