[chrome.dial] Adds chrome.dial.fetchDeviceDecription API.

chrome/browser/extensions/api/dial/device_description_fetcher_unittest.cc

+// Copyright (c) 2016 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 <memory>
+#include <string>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/ptr_util.h"
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/extensions/api/dial/device_description_fetcher.h"
+#include "chrome/browser/extensions/api/dial/dial_device_data.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "net/http/http_response_headers.h"
+#include "net/http/http_status_code.h"
+#include "net/url_request/test_url_fetcher_factory.h"
+#include "net/url_request/url_fetcher.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "url/gurl.h"
+
+namespace extensions {
+namespace api {
+namespace dial {
+
+class DeviceDescriptionFetcherTest : public testing::Test {
+ public:
+  DeviceDescriptionFetcherTest() : url_("http://127.0.0.1/description.xml") {}
+
+  void TearDown() override {
+    EXPECT_FALSE(error_cb_);
+    EXPECT_FALSE(success_cb_);
+  }
+
+  void ExpectSuccess(const GURL& expected_app_url,
+                     const std::string& expected_description) {
+    success_cb_ = base::BindOnce(&DeviceDescriptionFetcherTest::OnSuccess,
+                                 base::Unretained(this), expected_app_url,
+                                 expected_description);
+  }
+
+  void ExpectError(const std::string& expected_message) {
+    error_cb_ = base::BindOnce(&DeviceDescriptionFetcherTest::OnError,
+                               base::Unretained(this), expected_message);
+  }
+
+  net::TestURLFetcher* StartRequest() {
+    fetcher_ = base::MakeUnique<DeviceDescriptionFetcher>(
+        url_, &profile_, std::move(success_cb_), std::move(error_cb_));
+    fetcher_->Start();
+    return factory_.GetFetcherByID(
+        DeviceDescriptionFetcher::kURLFetcherIDForTest);
+  }
+
+ protected:
+  const content::TestBrowserThreadBundle thread_bundle_;
+  TestingProfile profile_;
+  const net::TestURLFetcherFactory factory_;
+  const GURL url_;
+  base::OnceCallback<void(const DialDeviceDescriptionData&)> success_cb_;
+  base::OnceCallback<void(const std::string&)> error_cb_;
+  std::unique_ptr<DeviceDescriptionFetcher> fetcher_;
+
+ private:
+  void OnSuccess(const GURL& expected_app_url,
+                 const std::string& expected_description,
+                 const DialDeviceDescriptionData& description) {
+    EXPECT_EQ(expected_app_url, description.app_url);
+    EXPECT_EQ(expected_description, description.device_description);
+  }
+
+  void OnError(const std::string& expected_message,
+               const std::string& message) {
+    EXPECT_TRUE(message.find(expected_message) == 0);
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(DeviceDescriptionFetcherTest);
+};
+
+TEST_F(DeviceDescriptionFetcherTest, FetchSuccessful) {
+  ExpectSuccess(GURL("http://127.0.0.1/apps"), "<xml>description</xml>");
+  net::TestURLFetcher* test_fetcher = StartRequest();
+
+  test_fetcher->set_response_code(net::HTTP_OK);
+  scoped_refptr<net::HttpResponseHeaders> headers =
+      new net::HttpResponseHeaders("");
+  headers->AddHeader("Application-URL: http://127.0.0.1/apps");
+  test_fetcher->set_response_headers(headers);
+  test_fetcher->SetResponseString("<xml>description</xml>");
+  test_fetcher->delegate()->OnURLFetchComplete(test_fetcher);
+}
+
+TEST_F(DeviceDescriptionFetcherTest, FetchFailsOnMissingDescription) {
+  ExpectError("HTTP 404:");
+  net::TestURLFetcher* test_fetcher = StartRequest();
+
+  test_fetcher->set_response_code(net::HTTP_NOT_FOUND);
+  test_fetcher->delegate()->OnURLFetchComplete(test_fetcher);
+}
+
+TEST_F(DeviceDescriptionFetcherTest, FetchFailsOnMissingAppUrl) {
+  ExpectError("Missing or empty Application-URL:");
+  net::TestURLFetcher* test_fetcher = StartRequest();
+
+  test_fetcher->set_response_code(net::HTTP_OK);
+  scoped_refptr<net::HttpResponseHeaders> headers =
+      new net::HttpResponseHeaders("");
+  test_fetcher->set_response_headers(headers);
+  test_fetcher->delegate()->OnURLFetchComplete(test_fetcher);
+}
+
+TEST_F(DeviceDescriptionFetcherTest, FetchFailsOnEmptyAppUrl) {
+  ExpectError("Missing or empty Application-URL:");
+  net::TestURLFetcher* test_fetcher = StartRequest();
+
+  test_fetcher->set_response_code(net::HTTP_OK);
+  scoped_refptr<net::HttpResponseHeaders> headers =
+      new net::HttpResponseHeaders("");
+  headers->AddHeader("Application-URL:");
+  test_fetcher->set_response_headers(headers);
+  test_fetcher->delegate()->OnURLFetchComplete(test_fetcher);
+}
+
+TEST_F(DeviceDescriptionFetcherTest, FetchFailsOnInvalidAppUrl) {
+  ExpectError("Invalid Application-URL:");
+  net::TestURLFetcher* test_fetcher = StartRequest();
+
+  test_fetcher->set_response_code(net::HTTP_OK);
+  scoped_refptr<net::HttpResponseHeaders> headers =
+      new net::HttpResponseHeaders("");
+  headers->AddHeader("Application-URL: http://www.example.com");
+  test_fetcher->set_response_headers(headers);
+  test_fetcher->delegate()->OnURLFetchComplete(test_fetcher);
+}
+
+TEST_F(DeviceDescriptionFetcherTest, FetchFailsOnEmptyDescription) {
+  ExpectError("Missing or empty response");
+  net::TestURLFetcher* test_fetcher = StartRequest();
+
+  test_fetcher->set_response_code(net::HTTP_OK);
+  scoped_refptr<net::HttpResponseHeaders> headers =
+      new net::HttpResponseHeaders("");
+  headers->AddHeader("Application-URL: http://127.0.0.1/apps");
+  test_fetcher->set_response_headers(headers);
+  test_fetcher->SetResponseString("");
+  test_fetcher->delegate()->OnURLFetchComplete(test_fetcher);
+}
+
+TEST_F(DeviceDescriptionFetcherTest, FetchFailsOnBadDescription) {
+  ExpectError("Invalid response encoding");
+  net::TestURLFetcher* test_fetcher = StartRequest();
+
+  test_fetcher->set_response_code(net::HTTP_OK);
+  scoped_refptr<net::HttpResponseHeaders> headers =
+      new net::HttpResponseHeaders("");
+  headers->AddHeader("Application-URL: http://127.0.0.1/apps");
+  test_fetcher->set_response_headers(headers);
+  test_fetcher->SetResponseString("\xfc\x9c\xbf\x80\xbf\x80");
+  test_fetcher->delegate()->OnURLFetchComplete(test_fetcher);
+}
+
+TEST_F(DeviceDescriptionFetcherTest, FetchFailsOnResponseTooLarge) {
+  ExpectError("Response too large");
+  net::TestURLFetcher* test_fetcher = StartRequest();
+
+  test_fetcher->set_response_code(net::HTTP_OK);
+  scoped_refptr<net::HttpResponseHeaders> headers =
+      new net::HttpResponseHeaders("");
+  headers->AddHeader("Application-URL: http://127.0.0.1/apps");
+  test_fetcher->set_response_headers(headers);
+  test_fetcher->SetResponseString(std::string(262145, 'd'));
+  test_fetcher->delegate()->OnURLFetchComplete(test_fetcher);
+}
+
+}  // namespace dial
+}  // namespace api
+}  // namespace extensions