Implement CannedSyncableFileSystem.Write for write testing

Also factor out MockBlobURLRequestContext class so that we can easily
test writing with blob urls.

BUG=148897
TEST=LocalFileChangeTrackerTest.*
TBR=jam@chromium.org

Review URL: https://codereview.chromium.org/11146015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@162078 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 116 insertions, 0 deletions

diff --git a/webkit/blob/mock_blob_url_request_context.cc b/webkit/blob/mock_blob_url_request_context.cc
new file mode 100644
index 0000000..8cc06bc
--- /dev/null
+++ b/webkit/blob/mock_blob_url_request_context.cc
@@ -0,0 +1,68 @@
+// 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 "webkit/blob/mock_blob_url_request_context.h"
+
+#include "webkit/blob/blob_data.h"
+#include "webkit/blob/blob_storage_controller.h"
+#include "webkit/blob/blob_url_request_job.h"
+
+namespace webkit_blob {
+
+namespace {
+
+class MockBlobProtocolHandler
+    : public net::URLRequestJobFactory::ProtocolHandler {
+ public:
+  explicit MockBlobProtocolHandler(
+      BlobStorageController* blob_storage_controller)
+      : blob_storage_controller_(blob_storage_controller) {}
+
+  virtual ~MockBlobProtocolHandler() {}
+
+  virtual net::URLRequestJob* MaybeCreateJob(
+      net::URLRequest* request,
+      net::NetworkDelegate* network_delegate) const OVERRIDE {
+    return new BlobURLRequestJob(
+        request,
+        network_delegate,
+        blob_storage_controller_->GetBlobDataFromUrl(request->url()),
+        base::MessageLoopProxy::current());
+  }
+
+ private:
+  webkit_blob::BlobStorageController* const blob_storage_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockBlobProtocolHandler);
+};
+
+}  // namespace
+
+MockBlobURLRequestContext::MockBlobURLRequestContext()
+    : blob_storage_controller_(new BlobStorageController) {
+  // Job factory owns the protocol handler.
+  job_factory_.SetProtocolHandler(
+      "blob", new MockBlobProtocolHandler(blob_storage_controller_.get()));
+  set_job_factory(&job_factory_);
+}
+
+MockBlobURLRequestContext::~MockBlobURLRequestContext() {}
+
+ScopedTextBlob::ScopedTextBlob(
+    const MockBlobURLRequestContext& request_context,
+    const GURL& blob_url,
+    const std::string& data)
+    : blob_url_(blob_url),
+      blob_storage_controller_(request_context.blob_storage_controller()) {
+  DCHECK(blob_storage_controller_);
+  scoped_refptr<BlobData> blob_data(new BlobData());
+  blob_data->AppendData(data);
+  blob_storage_controller_->AddFinishedBlob(blob_url_, blob_data);
+}
+
+ScopedTextBlob::~ScopedTextBlob() {
+  blob_storage_controller_->RemoveBlob(blob_url_);
+}
+
+}  // namespace webkit_blob
diff --git a/webkit/blob/mock_blob_url_request_context.h b/webkit/blob/mock_blob_url_request_context.h
new file mode 100644
index 0000000..9190db9
--- /dev/null
+++ b/webkit/blob/mock_blob_url_request_context.h
@@ -0,0 +1,48 @@
+// 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.
+
+#ifndef WEBKIT_BLOB_MOCK_BLOB_URL_REQUEST_CONTEXT_H_
+#define WEBKIT_BLOB_MOCK_BLOB_URL_REQUEST_CONTEXT_H_
+
+#include "net/url_request/url_request_context.h"
+#include "net/url_request/url_request_job.h"
+#include "net/url_request/url_request_job_factory_impl.h"
+
+namespace webkit_blob {
+
+class BlobStorageController;
+
+class MockBlobURLRequestContext : public net::URLRequestContext {
+ public:
+  MockBlobURLRequestContext();
+  virtual ~MockBlobURLRequestContext();
+
+  BlobStorageController* blob_storage_controller() const {
+    return blob_storage_controller_.get();
+  }
+
+ private:
+  net::URLRequestJobFactoryImpl job_factory_;
+  scoped_ptr<BlobStorageController> blob_storage_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(MockBlobURLRequestContext);
+};
+
+class ScopedTextBlob {
+ public:
+  ScopedTextBlob(const MockBlobURLRequestContext& request_context,
+                 const GURL& blob_url,
+                 const std::string& data);
+  ~ScopedTextBlob();
+
+ private:
+  const GURL blob_url_;
+  BlobStorageController* blob_storage_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedTextBlob);
+};
+
+}  // namespace webkit_blob
+
+#endif  // WEBKIT_BLOB_MOCK_BLOB_URL_REQUEST_CONTEXT_H_