// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/webrtc/webrtc_internals_message_handler.h"

#include <memory>
#include <string>

#include "base/run_loop.h"
#include "base/strings/strcat.h"
#include "content/browser/webrtc/webrtc_internals.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/url_constants.h"
#include "content/public/test/navigation_simulator.h"
#include "content/public/test/scoped_web_ui_controller_factory_registration.h"
#include "content/public/test/test_web_ui.h"
#include "content/test/test_web_contents.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace content {

namespace {

static const GlobalRenderFrameHostId kFrameId = {20, 30};
static const int kPid = 35;
static const int kLid = 75;
static const char kRtcConfiguration[] = "r";
static const char kUrl[] = "u";

class WebRTCInternalsMessageHandlerForTest
    : public WebRTCInternalsMessageHandler {
 public:
  WebRTCInternalsMessageHandlerForTest(WebRTCInternals* webrtc_internals,
                                       WebUI* web_ui)
      : WebRTCInternalsMessageHandler(webrtc_internals) {
    set_web_ui(web_ui);
  }

  ~WebRTCInternalsMessageHandlerForTest() override {}
};

class WebRTCInternalsForTest : public WebRTCInternals {
 public:
  WebRTCInternalsForTest() : WebRTCInternals(0, false) {}
  ~WebRTCInternalsForTest() override {}
};

}  // namespace

class WebRtcInternalsMessageHandlerTest : public RenderViewHostTestHarness {
 public:
  WebRtcInternalsMessageHandlerTest() {}

 protected:
  void SetUp() override {
    RenderViewHostTestHarness::SetUp();
    web_ui_ = std::make_unique<TestWebUI>();
    web_ui_->set_web_contents(web_contents());
  }

  void TearDown() override {
    web_ui_->set_web_contents(nullptr);
    web_ui_.reset();
    RenderViewHostTestHarness::TearDown();
  }

  std::unique_ptr<TestWebUI> web_ui_;

  // Unregister the existing WebUIConfig so that the test uses the test WebUI.
  ScopedWebUIConfigRegistration config_{
      GURL(base::StrCat({"chrome://", kChromeUIWebRTCInternalsHost}))};
};

TEST_F(WebRtcInternalsMessageHandlerTest, DontRunJSBeforeNavigationCommitted) {
  GURL webrtc_url(std::string("chrome://") + kChromeUIWebRTCInternalsHost);
  GURL example_url("http://www.example.com/");

  WebRTCInternalsForTest webrtc_internals;
  WebRTCInternalsMessageHandlerForTest observer(&webrtc_internals,
                                                web_ui_.get());

  NavigateAndCommit(example_url);
  webrtc_internals.OnPeerConnectionAdded(kFrameId, kPid, kLid, kUrl,
                                         kRtcConfiguration);
  base::RunLoop().RunUntilIdle();

  auto navigation = content::NavigationSimulator::CreateBrowserInitiated(
      webrtc_url, web_contents());
  navigation->Start();
  // We still shouldn't run JS, since navigation to webrtc-internals isn't
  // finished.
  webrtc_internals.OnPeerConnectionRemoved(kFrameId, kLid);
  base::RunLoop().RunUntilIdle();

  webrtc_internals.RemoveObserver(&observer);
}

}  // namespace content