chrome/browser/search/most_visited_iframe_source_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 "chrome/browser/search/most_visited_iframe_source.h"

#include <memory>

#include "base/bind.h"
#include "base/memory/ref_counted_memory.h"
#include "chrome/browser/search/instant_io_context.h"
#include "chrome/grit/local_ntp_resources.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/common/previews_state.h"
#include "content/public/test/browser_task_environment.h"
#include "content/public/test/mock_resource_context.h"
#include "ipc/ipc_message.h"
#include "net/base/request_priority.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_test_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"

const int kNonInstantRendererPID = 0;
const char kNonInstantOrigin[] = "http://evil";
const int kInstantRendererPID = 1;
const char kInstantOrigin[] = "chrome-search://instant";
const int kInvalidRendererPID = 42;

class TestMostVisitedIframeSource : public MostVisitedIframeSource {
 public:
  using MostVisitedIframeSource::GetMimeType;
  using MostVisitedIframeSource::SendJSWithOrigin;
  using MostVisitedIframeSource::SendResource;
  using MostVisitedIframeSource::ShouldServiceRequest;

  void set_origin(std::string origin) { origin_ = origin; }

 protected:
  std::string GetSource() override { return "test"; }

  bool ServesPath(const std::string& path) const override {
    return path == "/valid.html" || path == "/valid.js";
  }

  void StartDataRequest(
      const GURL& url,
      const content::WebContents::Getter& wc_getter,
      const content::URLDataSource::GotDataCallback& callback) override {}

  // RenderFrameHost is hard to mock in concert with everything else, so stub
  // this method out for testing.
  bool GetOrigin(const content::WebContents::Getter& wc_getter,
                 std::string* origin) const override {
    if (origin_.empty())
      return false;
    *origin = origin_;
    return true;
  }

 private:
  std::string origin_;
};

class MostVisitedIframeSourceTest : public testing::Test {
 public:
  // net::URLRequest wants to be executed with a message loop that has TYPE_IO.
  // InstantIOContext needs to be created on the UI thread and have everything
  // else happen on the IO thread. This setup is a hacky way to satisfy all
  // those constraints.
  MostVisitedIframeSourceTest()
      : task_environment_(content::BrowserTaskEnvironment::IO_MAINLOOP),
        instant_io_context_(nullptr),
        response_(nullptr) {}

  TestMostVisitedIframeSource* source() { return source_.get(); }

  std::string response_string() {
    if (response_.get()) {
      return std::string(response_->front_as<char>(), response_->size());
    }
    return "";
  }

  void SendResource(int resource_id) {
    source()->SendResource(resource_id, callback_);
  }

  void SendJSWithOrigin(int resource_id) {
    source()->SendJSWithOrigin(resource_id, content::WebContents::Getter(),
                               callback_);
  }

  bool ShouldService(const std::string& path, int process_id) {
    return source()->ShouldServiceRequest(GURL(path), &resource_context_,
                                          process_id);
  }

 private:
  void SetUp() override {
    source_ = std::make_unique<TestMostVisitedIframeSource>();
    callback_ = base::Bind(&MostVisitedIframeSourceTest::SaveResponse,
                           base::Unretained(this));
    instant_io_context_ = new InstantIOContext;
    InstantIOContext::SetUserDataOnIO(&resource_context_, instant_io_context_);
    source_->set_origin(kInstantOrigin);
    InstantIOContext::AddInstantProcessOnIO(instant_io_context_,
                                            kInstantRendererPID);
    response_ = nullptr;
  }

  void TearDown() override { source_.reset(); }

  void SaveResponse(scoped_refptr<base::RefCountedMemory> data) {
    response_ = data;
  }

  content::BrowserTaskEnvironment task_environment_;

  net::TestURLRequestContext test_url_request_context_;
  content::MockResourceContext resource_context_;
  std::unique_ptr<TestMostVisitedIframeSource> source_;
  content::URLDataSource::GotDataCallback callback_;
  scoped_refptr<InstantIOContext> instant_io_context_;
  scoped_refptr<base::RefCountedMemory> response_;
};

TEST_F(MostVisitedIframeSourceTest, ShouldServiceRequest) {
  source()->set_origin(kNonInstantOrigin);
  EXPECT_FALSE(ShouldService("http://test/loader.js", kNonInstantRendererPID));
  source()->set_origin(kInstantOrigin);
  EXPECT_FALSE(
      ShouldService("chrome-search://bogus/valid.js", kInstantRendererPID));
  source()->set_origin(kInstantOrigin);
  EXPECT_FALSE(
      ShouldService("chrome-search://test/bogus.js", kInstantRendererPID));
  source()->set_origin(kInstantOrigin);
  EXPECT_TRUE(
      ShouldService("chrome-search://test/valid.js", kInstantRendererPID));
  source()->set_origin(kNonInstantOrigin);
  EXPECT_FALSE(
      ShouldService("chrome-search://test/valid.js", kNonInstantRendererPID));
  source()->set_origin(std::string());
  EXPECT_FALSE(
      ShouldService("chrome-search://test/valid.js", kInvalidRendererPID));
}

TEST_F(MostVisitedIframeSourceTest, GetMimeType) {
  // URLDataManagerBackend does not include / in path_and_query.
  EXPECT_EQ("text/html", source()->GetMimeType("foo.html"));
  EXPECT_EQ("application/javascript", source()->GetMimeType("foo.js"));
  EXPECT_EQ("text/css", source()->GetMimeType("foo.css"));
  EXPECT_EQ("image/png", source()->GetMimeType("foo.png"));
  EXPECT_EQ("", source()->GetMimeType("bogus"));
}

TEST_F(MostVisitedIframeSourceTest, SendResource) {
  SendResource(IDR_MOST_VISITED_TITLE_HTML);
  EXPECT_FALSE(response_string().empty());
}

TEST_F(MostVisitedIframeSourceTest, SendJSWithOrigin) {
  source()->set_origin(kInstantOrigin);
  SendJSWithOrigin(IDR_MOST_VISITED_TITLE_JS);
  EXPECT_FALSE(response_string().empty());
  source()->set_origin(kNonInstantOrigin);
  SendJSWithOrigin(IDR_MOST_VISITED_TITLE_JS);
  EXPECT_FALSE(response_string().empty());
  source()->set_origin(std::string());
  SendJSWithOrigin(IDR_MOST_VISITED_TITLE_JS);
  EXPECT_TRUE(response_string().empty());
}