Implement a proxy for Pepper FileIO.

ppapi/tests/test_file_io.cc

 // Copyright (c) 2011 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 "ppapi/tests/test_file_io.h"
 
 #include <string.h>
 
 #include "base/memory/scoped_ptr.h"
 #include "ppapi/c/dev/ppb_testing_dev.h"
@@ skipping 886 matching lines @@
   char buf_2[3];
   int32_t rv_2 = file_io.Read(read_offset_2, buf_2, sizeof(buf_2),
                               callback_2);
   if (force_async_ && rv_2 != PP_OK_COMPLETIONPENDING)
     return ReportError("FileIO::Read force_async", rv_2);
   if (rv_2 == PP_OK_COMPLETIONPENDING)
     rv_2 = callback_2.WaitForResult();
   if (rv_2 != PP_ERROR_INPROGRESS)
     return ReportError("FileIO::Read", rv_2);
 
+  // Can not query while the write is pending.

[viettrungluu, 2011/12/01 22:59:43]

nit: s/Can not/Cannot/

They mean different things. E.g., "You can *not* show up to work, but then
you'll get fired." versus "You cannot go to work because you're sick.".

+  TestCompletionCallback callback_3(instance_->pp_instance(), force_async_);
+  PP_FileInfo info;
+  int32_t rv_3 = file_io.Query(&info, callback_3);
+  if (rv_3 == PP_OK_COMPLETIONPENDING)
+    rv_3 = callback_3.WaitForResult();
+  if (rv_3 != PP_ERROR_INPROGRESS)
+    return ReportError("FileIO::Query", rv_3);
+
+  // Can not touch while the write is pending.
+  TestCompletionCallback callback_4(instance_->pp_instance(), force_async_);
+  int32_t rv_4 = file_io.Touch(1234.0, 5678.0, callback_4);
+  if (rv_4 == PP_OK_COMPLETIONPENDING)
+    rv_4 = callback_4.WaitForResult();
+  if (rv_4 != PP_ERROR_INPROGRESS)
+    return ReportError("FileIO::Touch", rv_4);
+
+  // Can not set length while the write is pending.
+  TestCompletionCallback callback_5(instance_->pp_instance(), force_async_);
+  int32_t rv_5 = file_io.SetLength(123, callback_5);
+  if (rv_5 == PP_OK_COMPLETIONPENDING)
+    rv_5 = callback_5.WaitForResult();
+  if (rv_5 != PP_ERROR_INPROGRESS)
+    return ReportError("FileIO::SetLength", rv_5);
+
   callback_1.WaitForResult();
 
   PASS();
 }
 
 std::string TestFileIO::TestWillWriteWillSetLength() {
   TestCompletionCallback callback(instance_->pp_instance(), force_async_);
 
   pp::FileSystem file_system(instance_, PP_FILESYSTEMTYPE_LOCALTEMPORARY);
   pp::FileRef file_ref(file_system, "/file_will_write");
@@ skipping 17 matching lines @@
   if (rv == PP_OK_COMPLETIONPENDING)
     rv = callback.WaitForResult();
   if (rv != PP_OK)
     return ReportError("FileIO::Open", rv);
 
   const PPB_FileIOTrusted* trusted = static_cast<const PPB_FileIOTrusted*>(
       pp::Module::Get()->GetBrowserInterface(PPB_FILEIOTRUSTED_INTERFACE));
   if (!trusted)
     return ReportError("FileIOTrusted", PP_ERROR_FAILED);
 
-  // Get file descriptor.
-  int32_t fd = trusted->GetOSFileDescriptor(file_io.pp_resource());
-  if (fd < 0)
-    return "FileIO::GetOSFileDescriptor() returned a bad file descriptor.";
+  // Get file descriptor. This is only supported in-process for now, so don't
+  // test out of process.
+  const PPB_Testing_Dev* testing_interface = GetTestingInterface();
+  if (testing_interface && !testing_interface->IsOutOfProcess()) {
+    int32_t fd = trusted->GetOSFileDescriptor(file_io.pp_resource());
+    if (fd < 0)
+      return "FileIO::GetOSFileDescriptor() returned a bad file descriptor.";
+  }
 
   // Calling WillWrite.
   rv = trusted->WillWrite(
       file_io.pp_resource(), 0, 9,
       static_cast<pp::CompletionCallback>(callback).pp_completion_callback());
   if (rv == PP_OK_COMPLETIONPENDING)
     rv = callback.WaitForResult();
   if (rv != 9)
     return ReportError("WillWrite", rv);
 
@@ skipping 133 matching lines @@
     rv = callback.WaitForResult();
   if ((invalid_combination && rv == PP_OK) ||
       (!invalid_combination && ((rv == PP_OK) != create_if_doesnt_exist))) {
     return ReportOpenError(open_flags);
   }
 
   return std::string();
 }
 
 // TODO(viettrungluu): Test Close(). crbug.com/69457