text: // 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 "net/proxy/network_delegate_error_observer.h"
  
  #include "base/bind.h"
  #include "base/bind_helpers.h"
  #include "base/location.h"
  #include "base/run_loop.h"
  #include "base/single_thread_task_runner.h"
  #include "base/threading/thread.h"
  #include "base/threading/thread_task_runner_handle.h"
  #include "net/base/net_errors.h"
  #include "net/base/network_delegate_impl.h"
  #include "testing/gtest/include/gtest/gtest.h"
  
  namespace net {
  
  namespace {
  
  class TestNetworkDelegate : public NetworkDelegateImpl {
   public:
    TestNetworkDelegate() : got_pac_error_(false) {}
    ~TestNetworkDelegate() override {}
  
    bool got_pac_error() const { return got_pac_error_; }
  
   private:
    // NetworkDelegate implementation.
    int OnBeforeURLRequest(URLRequest* request,
                           const CompletionCallback& callback,
                           GURL* new_url) override {
      return OK;
    }
    int OnBeforeStartTransaction(URLRequest* request,
                                 const CompletionCallback& callback,
                                 HttpRequestHeaders* headers) override {
      return OK;
    }
    void OnStartTransaction(URLRequest* request,
                            const HttpRequestHeaders& headers) override {}
    int OnHeadersReceived(
        URLRequest* request,
        const CompletionCallback& callback,
        const HttpResponseHeaders* original_response_headers,
        scoped_refptr<HttpResponseHeaders>* override_response_headers,
        GURL* allowed_unsafe_redirect_url) override {
      return OK;
    }
    void OnBeforeRedirect(URLRequest* request,
                          const GURL& new_location) override {}
    void OnResponseStarted(URLRequest* request, int net_error) override {}
    void OnCompleted(URLRequest* request, bool started, int net_error) override {}
    void OnURLRequestDestroyed(URLRequest* request) override {}
  
    void OnPACScriptError(int line_number, const base::string16& error) override {
      got_pac_error_ = true;
    }
    AuthRequiredResponse OnAuthRequired(URLRequest* request,
                                        const AuthChallengeInfo& auth_info,
                                        const AuthCallback& callback,
                                        AuthCredentials* credentials) override {
      return AUTH_REQUIRED_RESPONSE_NO_ACTION;
    }
    bool OnCanGetCookies(const URLRequest& request,
                         const CookieList& cookie_list) override {
      return true;
    }
    bool OnCanSetCookie(const URLRequest& request,
                        const std::string& cookie_line,
                        CookieOptions* options) override {
      return true;
    }
    bool OnCanAccessFile(const URLRequest& request,
                         const base::FilePath& original_path,
                         const base::FilePath& absolute_path) const override {
      return true;
    }
  
    bool got_pac_error_;
  };
  
  // Check that the OnPACScriptError method can be called from an arbitrary
  // thread.
  TEST(NetworkDelegateErrorObserverTest, CallOnThread) {
    base::Thread thread("test_thread");
    thread.Start();
    TestNetworkDelegate network_delegate;
    NetworkDelegateErrorObserver observer(
        &network_delegate, base::ThreadTaskRunnerHandle::Get().get());
    thread.task_runner()->PostTask(
        FROM_HERE, base::Bind(&NetworkDelegateErrorObserver::OnPACScriptError,
                              base::Unretained(&observer), 42, base::string16()));
    thread.Stop();
    base::RunLoop().RunUntilIdle();
    ASSERT_TRUE(network_delegate.got_pac_error());
  }
  
  // Check that passing a NULL network delegate works.
  TEST(NetworkDelegateErrorObserverTest, NoDelegate) {
    base::Thread thread("test_thread");
    thread.Start();
    NetworkDelegateErrorObserver observer(
        NULL, base::ThreadTaskRunnerHandle::Get().get());
    thread.task_runner()->PostTask(
        FROM_HERE, base::Bind(&NetworkDelegateErrorObserver::OnPACScriptError,
                              base::Unretained(&observer), 42, base::string16()));
    thread.Stop();
    base::RunLoop().RunUntilIdle();
    // Shouldn't have crashed until here...
  }
  
  }  // namespace
  
  }  // namespace net
  