Add read-only access to POST data for webRequest's onBeforeRequest

chrome/browser/extensions/api/web_request/upload_data_presenter_unittest.cc

+// 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 "base/base64.h"
+#include "base/basictypes.h"
+#include "base/values.h"
+#include "chrome/browser/extensions/api/web_request/upload_data_presenter.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using base::BinaryValue;
+using base::ListValue;
+using base::StringValue;
+using base::Value;
+
+namespace extensions {
+
+class WebRequestUploadDataPresenterTest : public testing::Test {
+ public:
+  WebRequestUploadDataPresenterTest() {}
+
+ protected:
+  virtual void SetUp() OVERRIDE {}

[battre, 2012/08/16 19:18:03]

if you don't set up anything, you can remove this class entirely. Just use
TEST(... instead for TEST_F(... below. The _F stands for fixture.

[vabr (Chromium), 2012/08/17 18:29:57]

Thanks! I did not know that.

+};
+
+// ChunkedErrorPresenter is tested within
+// ExtensionWebRequestTest.AccessRequestBodyData .
+
+// ParsedDataPresenter is tested on these places:
+//  * The underlying parser in WebRequestFormDataParserTest.
+//  * The extraction of data from URLRequest in
+//    ExtensionWebRequestTest.AccessRequestBodyData.
+
+TEST_F(WebRequestUploadDataPresenterTest, RawData) {
+  // Input.
+  char block_data1[] = "test";
+  std::vector<char> block1(block_data1, block_data1 + arraysize(block_data1));
+  const char kFilename[] = "path/test_filename.ext";
+  char block_data2[] = "another test";
+  std::vector<char> block2(block_data2, block_data2 + arraysize(block_data2));
+
+  // Expected output.
+  scoped_ptr<BinaryValue> expected_a(
+      BinaryValue::CreateWithCopiedBuffer(&(block1[0]), block1.size()));
+  ASSERT_TRUE(expected_a.get() != NULL);
+  std::string encoded_filename;
+  ASSERT_TRUE(base::Base64Encode(kFilename, &encoded_filename));
+  scoped_ptr<StringValue> expected_b(new StringValue(encoded_filename));
+  ASSERT_TRUE(expected_b.get() != NULL);
+  scoped_ptr<BinaryValue> expected_c(
+      BinaryValue::CreateWithCopiedBuffer(&(block2[0]), block2.size()));
+  ASSERT_TRUE(expected_c.get() != NULL);
+
+  ListValue expected_list;

[battre, 2012/08/16 19:18:03]

How does the consumer of this class know that the first item is a bytes array
and the second one is a file name?

[vabr (Chromium), 2012/08/17 18:29:57]

On the C++ level this is BinaryValue (bytes array) vs. StringValue (filename).
In Javascript they can use "typeof".

[battre, 2012/08/20 12:09:38]

I think this should be discussed with the extensions team. We might use Strings
for other purposes than filenames in the future.

[vabr (Chromium), 2012/08/23 15:41:54]

On a second thought, I refined the structure of requestBody.raw elements. They
now have properties "bytes" and "file", so any clash with future types is
avoided.

+  expected_list.Append(expected_a.release());
+  expected_list.Append(expected_b.release());
+  expected_list.Append(expected_c.release());
+
+  // Real output.
+  RawDataPresenter raw_presenter;
+  raw_presenter.FeedNextBytes(block1);
+  raw_presenter.FeedNextFile(kFilename);
+  raw_presenter.FeedNextBytes(block2);
+  EXPECT_TRUE(raw_presenter.Succeeded());
+  scoped_ptr<Value> result = raw_presenter.Result();
+
+  EXPECT_TRUE(result->Equals(&expected_list));
+}
+
+}  // namespace extensions