Adds ImageWriterPrivate.destroyPartitions operation.

chrome/browser/extensions/api/image_writer_private/destroy_partitions_operation_unittest.cc

+// Copyright 2013 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 "base/run_loop.h"
+#include "chrome/browser/extensions/api/image_writer_private/destroy_partitions_operation.h"
+#include "chrome/browser/extensions/api/image_writer_private/error_messages.h"
+#include "chrome/browser/extensions/api/image_writer_private/test_utils.h"
+
+namespace extensions {
+namespace image_writer {
+
+using testing::_;
+using testing::Lt;
+using testing::AnyNumber;
+using testing::AtLeast;
+
+namespace {
+
+class ImageWriterDestroyPartitionsOperationTest
+    : public ImageWriterUnitTestBase {
+};
+
+} // namespace

[tbarzic, 2013/12/14 01:01:04]

If possible the whole test file should go in an anonymous namespace

[Drew Haven, 2013/12/16 20:15:33]

Done.

+
+// Tests that the DestroyPartitionsOperation can successfully zero the first
+// kPartitionTableSize bytes of an image.
+TEST_F(ImageWriterDestroyPartitionsOperationTest, DestroyPartitions) {
+  MockOperationManager manager;
+  base::RunLoop loop;
+
+  scoped_refptr<DestroyPartitionsOperation> operation
+      = new DestroyPartitionsOperation(manager.AsWeakPtr(),

[tbarzic, 2013/12/14 01:01:04]

scoped_refptr<...>operation(
    new ....)

[Drew Haven, 2013/12/16 20:15:33]

Done.

+                                       kDummyExtensionId,
+                                       test_device_path_.AsUTF8Unsafe());
+
+  EXPECT_CALL(manager, OnProgress(kDummyExtensionId, _, _)).Times(0);
+  EXPECT_CALL(manager, OnProgress(kDummyExtensionId,
+                                  image_writer_api::STAGE_WRITE,
+                                  _)).Times(AnyNumber());
+  EXPECT_CALL(manager, OnComplete(kDummyExtensionId)).Times(1);
+  EXPECT_CALL(manager, OnError(kDummyExtensionId, _, _, _)).Times(0);
+
+  operation->Start();
+
+  loop.RunUntilIdle();
+
+  char image_data[kPartitionTableSize];
+  char zeroes[kPartitionTableSize];
+  memset(zeroes, 0, kPartitionTableSize);
+  ASSERT_EQ(kPartitionTableSize,
+            base::ReadFile(test_device_path_, image_data, kPartitionTableSize));
+  EXPECT_EQ(0, memcmp(image_data, zeroes, kPartitionTableSize));
+}
+
+}  // namespace image_writer
+}  // namespace extensions