net/base/trace_net_log_observer_unittest.cc - mojo-tools - Git at Google

 // Copyright 2014 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/base/trace_net_log_observer.h"

 #include <string>
 #include <vector>

 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_impl.h"
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
 #include "net/base/capturing_net_log.h"
 #include "net/base/net_log.h"
 #include "testing/gtest/include/gtest/gtest.h"

 using base::debug::TraceLog;

 namespace net {

 namespace {

 // TraceLog category for NetLog events.
 const char kNetLogTracingCategory[] = TRACE_DISABLED_BY_DEFAULT("netlog");

 struct TraceEntryInfo {
   std::string category;
   std::string id;
   std::string phase;
   std::string name;
   std::string source_type;
 };

 TraceEntryInfo GetTraceEntryInfoFromValue(const base::DictionaryValue& value) {
   TraceEntryInfo info;
   EXPECT_TRUE(value.GetString("cat", &info.category));
   EXPECT_TRUE(value.GetString("id", &info.id));
   EXPECT_TRUE(value.GetString("ph", &info.phase));
   EXPECT_TRUE(value.GetString("name", &info.name));
   EXPECT_TRUE(value.GetString("args.source_type", &info.source_type));

   return info;
 }

 class TraceNetLogObserverTest : public testing::Test {
  public:
   TraceNetLogObserverTest() {
     TraceLog* tracelog = TraceLog::GetInstance();
     DCHECK(tracelog);
     DCHECK(!tracelog->IsEnabled());
     trace_buffer_.SetOutputCallback(json_output_.GetCallback());
     trace_net_log_observer_.reset(new TraceNetLogObserver());
     trace_events_.reset(new base::ListValue());
   }

   virtual ~TraceNetLogObserverTest() {
     DCHECK(!TraceLog::GetInstance()->IsEnabled());
   }

   void OnTraceDataCollected(
       base::RunLoop* run_loop,
       const scoped_refptr<base::RefCountedString>& events_str,
       bool has_more_events) {
     DCHECK(trace_events_->empty());
     trace_buffer_.Start();
     trace_buffer_.AddFragment(events_str->data());
     trace_buffer_.Finish();

     scoped_ptr<base::Value> trace_value;
     trace_value.reset(base::JSONReader::Read(
         json_output_.json_output,
         base::JSON_PARSE_RFC | base::JSON_DETACHABLE_CHILDREN));

     ASSERT_TRUE(trace_value) << json_output_.json_output;
     base::ListValue* trace_events = NULL;
     ASSERT_TRUE(trace_value->GetAsList(&trace_events));

     trace_events_ = FilterNetLogTraceEvents(*trace_events);

     if (!has_more_events)
       run_loop->Quit();
   }

   static void EnableTraceLog() {
     TraceLog::GetInstance()->SetEnabled(
         base::debug::CategoryFilter(kNetLogTracingCategory),
         TraceLog::RECORDING_MODE,
         base::debug::TraceOptions());
   }

   void EndTraceAndFlush() {
     base::RunLoop run_loop;
     TraceLog::GetInstance()->SetDisabled();
     TraceLog::GetInstance()->Flush(
         base::Bind(&TraceNetLogObserverTest::OnTraceDataCollected,
                    base::Unretained(this),
                    base::Unretained(&run_loop)));
     run_loop.Run();
   }

   void set_trace_net_log_observer(TraceNetLogObserver* trace_net_log_observer) {
     trace_net_log_observer_.reset(trace_net_log_observer);
   }

   static scoped_ptr<base::ListValue> FilterNetLogTraceEvents(
       const base::ListValue& trace_events) {
     scoped_ptr<base::ListValue> filtered_trace_events(new base::ListValue());
     for (size_t i = 0; i < trace_events.GetSize(); i++) {
       const base::DictionaryValue* dict = NULL;
       if (!trace_events.GetDictionary(i, &dict)) {
         ADD_FAILURE() << "Unexpected non-dictionary event in trace_events";
         continue;
       }
       std::string category;
       if (!dict->GetString("cat", &category)) {
         ADD_FAILURE()
             << "Unexpected item without a category field in trace_events";
         continue;
       }
       if (category != kNetLogTracingCategory)
         continue;
       filtered_trace_events->Append(dict->DeepCopy());
     }
     return filtered_trace_events.Pass();
   }

   base::ListValue* trace_events() const {
     return trace_events_.get();
   }

   CapturingNetLog* net_log() {
     return &net_log_;
   }

   TraceNetLogObserver* trace_net_log_observer() const {
     return trace_net_log_observer_.get();
   }

  private:
   scoped_ptr<base::ListValue> trace_events_;
   base::debug::TraceResultBuffer trace_buffer_;
   base::debug::TraceResultBuffer::SimpleOutput json_output_;
   CapturingNetLog net_log_;
   scoped_ptr<TraceNetLogObserver> trace_net_log_observer_;
 };

 TEST_F(TraceNetLogObserverTest, TracingNotEnabled) {
   trace_net_log_observer()->WatchForTraceStart(net_log());
   net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);

   EndTraceAndFlush();
   trace_net_log_observer()->StopWatchForTraceStart();

   EXPECT_EQ(0u, trace_events()->GetSize());
 }

 TEST_F(TraceNetLogObserverTest, TraceEventCaptured) {
   CapturingNetLog::CapturedEntryList entries;
   net_log()->GetEntries(&entries);
   EXPECT_TRUE(entries.empty());

   trace_net_log_observer()->WatchForTraceStart(net_log());
   EnableTraceLog();
   BoundNetLog bound_net_log =
       BoundNetLog::Make(net_log(), net::NetLog::SOURCE_NONE);
   net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
   bound_net_log.BeginEvent(NetLog::TYPE_URL_REQUEST_START_JOB);
   bound_net_log.EndEvent(NetLog::TYPE_REQUEST_ALIVE);

   net_log()->GetEntries(&entries);
   EXPECT_EQ(3u, entries.size());
   EndTraceAndFlush();
   trace_net_log_observer()->StopWatchForTraceStart();
   EXPECT_EQ(3u, trace_events()->GetSize());
   const base::DictionaryValue* item1 = NULL;
   ASSERT_TRUE(trace_events()->GetDictionary(0, &item1));
   const base::DictionaryValue* item2 = NULL;
   ASSERT_TRUE(trace_events()->GetDictionary(1, &item2));
   const base::DictionaryValue* item3 = NULL;
   ASSERT_TRUE(trace_events()->GetDictionary(2, &item3));

   TraceEntryInfo actual_item1 = GetTraceEntryInfoFromValue(*item1);
   TraceEntryInfo actual_item2 = GetTraceEntryInfoFromValue(*item2);
   TraceEntryInfo actual_item3 = GetTraceEntryInfoFromValue(*item3);
   EXPECT_EQ(kNetLogTracingCategory, actual_item1.category);
   EXPECT_EQ(base::StringPrintf("0x%d", entries[0].source.id), actual_item1.id);
   EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
             actual_item1.phase);
   EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_CANCELLED),
             actual_item1.name);
   EXPECT_EQ(NetLog::SourceTypeToString(entries[0].source.type),
             actual_item1.source_type);

   EXPECT_EQ(kNetLogTracingCategory, actual_item2.category);
   EXPECT_EQ(base::StringPrintf("0x%d", entries[1].source.id), actual_item2.id);
   EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_BEGIN),
             actual_item2.phase);
   EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_URL_REQUEST_START_JOB),
             actual_item2.name);
   EXPECT_EQ(NetLog::SourceTypeToString(entries[1].source.type),
             actual_item2.source_type);

   EXPECT_EQ(kNetLogTracingCategory, actual_item3.category);
   EXPECT_EQ(base::StringPrintf("0x%d", entries[2].source.id), actual_item3.id);
   EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_END),
             actual_item3.phase);
   EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_REQUEST_ALIVE),
             actual_item3.name);
   EXPECT_EQ(NetLog::SourceTypeToString(entries[2].source.type),
             actual_item3.source_type);
 }

 TEST_F(TraceNetLogObserverTest, EnableAndDisableTracing) {
   trace_net_log_observer()->WatchForTraceStart(net_log());
   EnableTraceLog();
   net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
   TraceLog::GetInstance()->SetDisabled();
   net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);
   EnableTraceLog();
   net_log()->AddGlobalEntry(NetLog::TYPE_URL_REQUEST_START_JOB);

   EndTraceAndFlush();
   trace_net_log_observer()->StopWatchForTraceStart();

   CapturingNetLog::CapturedEntryList entries;
   net_log()->GetEntries(&entries);
   EXPECT_EQ(3u, entries.size());
   EXPECT_EQ(2u, trace_events()->GetSize());
   const base::DictionaryValue* item1 = NULL;
   ASSERT_TRUE(trace_events()->GetDictionary(0, &item1));
   const base::DictionaryValue* item2 = NULL;
   ASSERT_TRUE(trace_events()->GetDictionary(1, &item2));

   TraceEntryInfo actual_item1 = GetTraceEntryInfoFromValue(*item1);
   TraceEntryInfo actual_item2 = GetTraceEntryInfoFromValue(*item2);
   EXPECT_EQ(kNetLogTracingCategory, actual_item1.category);
   EXPECT_EQ(base::StringPrintf("0x%d", entries[0].source.id), actual_item1.id);
   EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
             actual_item1.phase);
   EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_CANCELLED),
             actual_item1.name);
   EXPECT_EQ(NetLog::SourceTypeToString(entries[0].source.type),
             actual_item1.source_type);

   EXPECT_EQ(kNetLogTracingCategory, actual_item2.category);
   EXPECT_EQ(base::StringPrintf("0x%d", entries[2].source.id), actual_item2.id);
   EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
             actual_item2.phase);
   EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_URL_REQUEST_START_JOB),
             actual_item2.name);
   EXPECT_EQ(NetLog::SourceTypeToString(entries[2].source.type),
             actual_item2.source_type);
 }

 TEST_F(TraceNetLogObserverTest, DestroyObserverWhileTracing) {
   trace_net_log_observer()->WatchForTraceStart(net_log());
   EnableTraceLog();
   net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
   trace_net_log_observer()->StopWatchForTraceStart();
   set_trace_net_log_observer(NULL);
   net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);

   EndTraceAndFlush();

   CapturingNetLog::CapturedEntryList entries;
   net_log()->GetEntries(&entries);
   EXPECT_EQ(2u, entries.size());
   EXPECT_EQ(1u, trace_events()->GetSize());

   const base::DictionaryValue* item1 = NULL;
   ASSERT_TRUE(trace_events()->GetDictionary(0, &item1));

   TraceEntryInfo actual_item1 = GetTraceEntryInfoFromValue(*item1);
   EXPECT_EQ(kNetLogTracingCategory, actual_item1.category);
   EXPECT_EQ(base::StringPrintf("0x%d", entries[0].source.id), actual_item1.id);
   EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
             actual_item1.phase);
   EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_CANCELLED),
             actual_item1.name);
   EXPECT_EQ(NetLog::SourceTypeToString(entries[0].source.type),
             actual_item1.source_type);
 }

 TEST_F(TraceNetLogObserverTest, DestroyObserverWhileNotTracing) {
   trace_net_log_observer()->WatchForTraceStart(net_log());
   net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
   trace_net_log_observer()->StopWatchForTraceStart();
   set_trace_net_log_observer(NULL);
   net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);
   net_log()->AddGlobalEntry(NetLog::TYPE_URL_REQUEST_START_JOB);

   EndTraceAndFlush();

   CapturingNetLog::CapturedEntryList entries;
   net_log()->GetEntries(&entries);
   EXPECT_EQ(3u, entries.size());
   EXPECT_EQ(0u, trace_events()->GetSize());
 }

 TEST_F(TraceNetLogObserverTest, CreateObserverAfterTracingStarts) {
   set_trace_net_log_observer(NULL);
   EnableTraceLog();
   set_trace_net_log_observer(new TraceNetLogObserver());
   trace_net_log_observer()->WatchForTraceStart(net_log());
   net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
   trace_net_log_observer()->StopWatchForTraceStart();
   net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);
   net_log()->AddGlobalEntry(NetLog::TYPE_URL_REQUEST_START_JOB);

   EndTraceAndFlush();

   CapturingNetLog::CapturedEntryList entries;
   net_log()->GetEntries(&entries);
   EXPECT_EQ(3u, entries.size());
   EXPECT_EQ(0u, trace_events()->GetSize());
 }

 TEST_F(TraceNetLogObserverTest, EventsWithAndWithoutParameters) {
   trace_net_log_observer()->WatchForTraceStart(net_log());
   EnableTraceLog();
   NetLog::ParametersCallback net_log_callback;
   std::string param = "bar";
   net_log_callback = NetLog::StringCallback("foo", &param);

   net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED, net_log_callback);
   net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);

   EndTraceAndFlush();
   trace_net_log_observer()->StopWatchForTraceStart();

   CapturingNetLog::CapturedEntryList entries;
   net_log()->GetEntries(&entries);
   EXPECT_EQ(2u, entries.size());
   EXPECT_EQ(2u, trace_events()->GetSize());
   const base::DictionaryValue* item1 = NULL;
   ASSERT_TRUE(trace_events()->GetDictionary(0, &item1));
   const base::DictionaryValue* item2 = NULL;
   ASSERT_TRUE(trace_events()->GetDictionary(1, &item2));

   TraceEntryInfo actual_item1 = GetTraceEntryInfoFromValue(*item1);
   TraceEntryInfo actual_item2 = GetTraceEntryInfoFromValue(*item2);
   EXPECT_EQ(kNetLogTracingCategory, actual_item1.category);
   EXPECT_EQ(base::StringPrintf("0x%d", entries[0].source.id), actual_item1.id);
   EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
             actual_item1.phase);
   EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_CANCELLED),
             actual_item1.name);
   EXPECT_EQ(NetLog::SourceTypeToString(entries[0].source.type),
             actual_item1.source_type);

   EXPECT_EQ(kNetLogTracingCategory, actual_item2.category);
   EXPECT_EQ(base::StringPrintf("0x%d", entries[1].source.id), actual_item2.id);
   EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
             actual_item2.phase);
   EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_REQUEST_ALIVE),
             actual_item2.name);
   EXPECT_EQ(NetLog::SourceTypeToString(entries[1].source.type),
             actual_item2.source_type);

   std::string item1_params;
   std::string item2_params;
   EXPECT_TRUE(item1->GetString("args.params.foo", &item1_params));
   EXPECT_EQ("bar", item1_params);

   EXPECT_TRUE(item2->GetString("args.params", &item2_params));
   EXPECT_TRUE(item2_params.empty());
 }

 }  // namespace

 }  // namespace net
	// Copyright 2014 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/base/trace_net_log_observer.h"

	#include <string>
	#include <vector>

	#include "base/debug/trace_event.h"
	#include "base/debug/trace_event_impl.h"
	#include "base/json/json_reader.h"
	#include "base/logging.h"
	#include "base/memory/ref_counted.h"
	#include "base/memory/ref_counted_memory.h"
	#include "base/memory/scoped_ptr.h"
	#include "base/run_loop.h"
	#include "base/strings/stringprintf.h"
	#include "base/values.h"
	#include "net/base/capturing_net_log.h"
	#include "net/base/net_log.h"
	#include "testing/gtest/include/gtest/gtest.h"

	using base::debug::TraceLog;

	namespace net {

	namespace {

	// TraceLog category for NetLog events.
	const char kNetLogTracingCategory[] = TRACE_DISABLED_BY_DEFAULT("netlog");

	struct TraceEntryInfo {
	std::string category;
	std::string id;
	std::string phase;
	std::string name;
	std::string source_type;
	};

	TraceEntryInfo GetTraceEntryInfoFromValue(const base::DictionaryValue& value) {
	TraceEntryInfo info;
	EXPECT_TRUE(value.GetString("cat", &info.category));
	EXPECT_TRUE(value.GetString("id", &info.id));
	EXPECT_TRUE(value.GetString("ph", &info.phase));
	EXPECT_TRUE(value.GetString("name", &info.name));
	EXPECT_TRUE(value.GetString("args.source_type", &info.source_type));

	return info;
	}

	class TraceNetLogObserverTest : public testing::Test {
	public:
	TraceNetLogObserverTest() {
	TraceLog* tracelog = TraceLog::GetInstance();
	DCHECK(tracelog);
	DCHECK(!tracelog->IsEnabled());
	trace_buffer_.SetOutputCallback(json_output_.GetCallback());
	trace_net_log_observer_.reset(new TraceNetLogObserver());
	trace_events_.reset(new base::ListValue());
	}

	virtual ~TraceNetLogObserverTest() {
	DCHECK(!TraceLog::GetInstance()->IsEnabled());
	}

	void OnTraceDataCollected(
	base::RunLoop* run_loop,
	const scoped_refptr<base::RefCountedString>& events_str,
	bool has_more_events) {
	DCHECK(trace_events_->empty());
	trace_buffer_.Start();
	trace_buffer_.AddFragment(events_str->data());
	trace_buffer_.Finish();

	scoped_ptr<base::Value> trace_value;
	trace_value.reset(base::JSONReader::Read(
	json_output_.json_output,
	base::JSON_PARSE_RFC \| base::JSON_DETACHABLE_CHILDREN));

	ASSERT_TRUE(trace_value) << json_output_.json_output;
	base::ListValue* trace_events = NULL;
	ASSERT_TRUE(trace_value->GetAsList(&trace_events));

	trace_events_ = FilterNetLogTraceEvents(*trace_events);

	if (!has_more_events)
	run_loop->Quit();
	}

	static void EnableTraceLog() {
	TraceLog::GetInstance()->SetEnabled(
	base::debug::CategoryFilter(kNetLogTracingCategory),
	TraceLog::RECORDING_MODE,
	base::debug::TraceOptions());
	}

	void EndTraceAndFlush() {
	base::RunLoop run_loop;
	TraceLog::GetInstance()->SetDisabled();
	TraceLog::GetInstance()->Flush(
	base::Bind(&TraceNetLogObserverTest::OnTraceDataCollected,
	base::Unretained(this),
	base::Unretained(&run_loop)));
	run_loop.Run();
	}

	void set_trace_net_log_observer(TraceNetLogObserver* trace_net_log_observer) {
	trace_net_log_observer_.reset(trace_net_log_observer);
	}

	static scoped_ptr<base::ListValue> FilterNetLogTraceEvents(
	const base::ListValue& trace_events) {
	scoped_ptr<base::ListValue> filtered_trace_events(new base::ListValue());
	for (size_t i = 0; i < trace_events.GetSize(); i++) {
	const base::DictionaryValue* dict = NULL;
	if (!trace_events.GetDictionary(i, &dict)) {
	ADD_FAILURE() << "Unexpected non-dictionary event in trace_events";
	continue;
	}
	std::string category;
	if (!dict->GetString("cat", &category)) {
	ADD_FAILURE()
	<< "Unexpected item without a category field in trace_events";
	continue;
	}
	if (category != kNetLogTracingCategory)
	continue;
	filtered_trace_events->Append(dict->DeepCopy());
	}
	return filtered_trace_events.Pass();
	}

	base::ListValue* trace_events() const {
	return trace_events_.get();
	}

	CapturingNetLog* net_log() {
	return &net_log_;
	}

	TraceNetLogObserver* trace_net_log_observer() const {
	return trace_net_log_observer_.get();
	}

	private:
	scoped_ptr<base::ListValue> trace_events_;
	base::debug::TraceResultBuffer trace_buffer_;
	base::debug::TraceResultBuffer::SimpleOutput json_output_;
	CapturingNetLog net_log_;
	scoped_ptr<TraceNetLogObserver> trace_net_log_observer_;
	};

	TEST_F(TraceNetLogObserverTest, TracingNotEnabled) {
	trace_net_log_observer()->WatchForTraceStart(net_log());
	net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);

	EndTraceAndFlush();
	trace_net_log_observer()->StopWatchForTraceStart();

	EXPECT_EQ(0u, trace_events()->GetSize());
	}

	TEST_F(TraceNetLogObserverTest, TraceEventCaptured) {
	CapturingNetLog::CapturedEntryList entries;
	net_log()->GetEntries(&entries);
	EXPECT_TRUE(entries.empty());

	trace_net_log_observer()->WatchForTraceStart(net_log());
	EnableTraceLog();
	BoundNetLog bound_net_log =
	BoundNetLog::Make(net_log(), net::NetLog::SOURCE_NONE);
	net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
	bound_net_log.BeginEvent(NetLog::TYPE_URL_REQUEST_START_JOB);
	bound_net_log.EndEvent(NetLog::TYPE_REQUEST_ALIVE);

	net_log()->GetEntries(&entries);
	EXPECT_EQ(3u, entries.size());
	EndTraceAndFlush();
	trace_net_log_observer()->StopWatchForTraceStart();
	EXPECT_EQ(3u, trace_events()->GetSize());
	const base::DictionaryValue* item1 = NULL;
	ASSERT_TRUE(trace_events()->GetDictionary(0, &item1));
	const base::DictionaryValue* item2 = NULL;
	ASSERT_TRUE(trace_events()->GetDictionary(1, &item2));
	const base::DictionaryValue* item3 = NULL;
	ASSERT_TRUE(trace_events()->GetDictionary(2, &item3));

	TraceEntryInfo actual_item1 = GetTraceEntryInfoFromValue(*item1);
	TraceEntryInfo actual_item2 = GetTraceEntryInfoFromValue(*item2);
	TraceEntryInfo actual_item3 = GetTraceEntryInfoFromValue(*item3);
	EXPECT_EQ(kNetLogTracingCategory, actual_item1.category);
	EXPECT_EQ(base::StringPrintf("0x%d", entries[0].source.id), actual_item1.id);
	EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
	actual_item1.phase);
	EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_CANCELLED),
	actual_item1.name);
	EXPECT_EQ(NetLog::SourceTypeToString(entries[0].source.type),
	actual_item1.source_type);

	EXPECT_EQ(kNetLogTracingCategory, actual_item2.category);
	EXPECT_EQ(base::StringPrintf("0x%d", entries[1].source.id), actual_item2.id);
	EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_BEGIN),
	actual_item2.phase);
	EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_URL_REQUEST_START_JOB),
	actual_item2.name);
	EXPECT_EQ(NetLog::SourceTypeToString(entries[1].source.type),
	actual_item2.source_type);

	EXPECT_EQ(kNetLogTracingCategory, actual_item3.category);
	EXPECT_EQ(base::StringPrintf("0x%d", entries[2].source.id), actual_item3.id);
	EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_END),
	actual_item3.phase);
	EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_REQUEST_ALIVE),
	actual_item3.name);
	EXPECT_EQ(NetLog::SourceTypeToString(entries[2].source.type),
	actual_item3.source_type);
	}

	TEST_F(TraceNetLogObserverTest, EnableAndDisableTracing) {
	trace_net_log_observer()->WatchForTraceStart(net_log());
	EnableTraceLog();
	net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
	TraceLog::GetInstance()->SetDisabled();
	net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);
	EnableTraceLog();
	net_log()->AddGlobalEntry(NetLog::TYPE_URL_REQUEST_START_JOB);

	EndTraceAndFlush();
	trace_net_log_observer()->StopWatchForTraceStart();

	CapturingNetLog::CapturedEntryList entries;
	net_log()->GetEntries(&entries);
	EXPECT_EQ(3u, entries.size());
	EXPECT_EQ(2u, trace_events()->GetSize());
	const base::DictionaryValue* item1 = NULL;
	ASSERT_TRUE(trace_events()->GetDictionary(0, &item1));
	const base::DictionaryValue* item2 = NULL;
	ASSERT_TRUE(trace_events()->GetDictionary(1, &item2));

	TraceEntryInfo actual_item1 = GetTraceEntryInfoFromValue(*item1);
	TraceEntryInfo actual_item2 = GetTraceEntryInfoFromValue(*item2);
	EXPECT_EQ(kNetLogTracingCategory, actual_item1.category);
	EXPECT_EQ(base::StringPrintf("0x%d", entries[0].source.id), actual_item1.id);
	EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
	actual_item1.phase);
	EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_CANCELLED),
	actual_item1.name);
	EXPECT_EQ(NetLog::SourceTypeToString(entries[0].source.type),
	actual_item1.source_type);

	EXPECT_EQ(kNetLogTracingCategory, actual_item2.category);
	EXPECT_EQ(base::StringPrintf("0x%d", entries[2].source.id), actual_item2.id);
	EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
	actual_item2.phase);
	EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_URL_REQUEST_START_JOB),
	actual_item2.name);
	EXPECT_EQ(NetLog::SourceTypeToString(entries[2].source.type),
	actual_item2.source_type);
	}

	TEST_F(TraceNetLogObserverTest, DestroyObserverWhileTracing) {
	trace_net_log_observer()->WatchForTraceStart(net_log());
	EnableTraceLog();
	net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
	trace_net_log_observer()->StopWatchForTraceStart();
	set_trace_net_log_observer(NULL);
	net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);

	EndTraceAndFlush();

	CapturingNetLog::CapturedEntryList entries;
	net_log()->GetEntries(&entries);
	EXPECT_EQ(2u, entries.size());
	EXPECT_EQ(1u, trace_events()->GetSize());

	const base::DictionaryValue* item1 = NULL;
	ASSERT_TRUE(trace_events()->GetDictionary(0, &item1));

	TraceEntryInfo actual_item1 = GetTraceEntryInfoFromValue(*item1);
	EXPECT_EQ(kNetLogTracingCategory, actual_item1.category);
	EXPECT_EQ(base::StringPrintf("0x%d", entries[0].source.id), actual_item1.id);
	EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
	actual_item1.phase);
	EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_CANCELLED),
	actual_item1.name);
	EXPECT_EQ(NetLog::SourceTypeToString(entries[0].source.type),
	actual_item1.source_type);
	}

	TEST_F(TraceNetLogObserverTest, DestroyObserverWhileNotTracing) {
	trace_net_log_observer()->WatchForTraceStart(net_log());
	net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
	trace_net_log_observer()->StopWatchForTraceStart();
	set_trace_net_log_observer(NULL);
	net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);
	net_log()->AddGlobalEntry(NetLog::TYPE_URL_REQUEST_START_JOB);

	EndTraceAndFlush();

	CapturingNetLog::CapturedEntryList entries;
	net_log()->GetEntries(&entries);
	EXPECT_EQ(3u, entries.size());
	EXPECT_EQ(0u, trace_events()->GetSize());
	}

	TEST_F(TraceNetLogObserverTest, CreateObserverAfterTracingStarts) {
	set_trace_net_log_observer(NULL);
	EnableTraceLog();
	set_trace_net_log_observer(new TraceNetLogObserver());
	trace_net_log_observer()->WatchForTraceStart(net_log());
	net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED);
	trace_net_log_observer()->StopWatchForTraceStart();
	net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);
	net_log()->AddGlobalEntry(NetLog::TYPE_URL_REQUEST_START_JOB);

	EndTraceAndFlush();

	CapturingNetLog::CapturedEntryList entries;
	net_log()->GetEntries(&entries);
	EXPECT_EQ(3u, entries.size());
	EXPECT_EQ(0u, trace_events()->GetSize());
	}

	TEST_F(TraceNetLogObserverTest, EventsWithAndWithoutParameters) {
	trace_net_log_observer()->WatchForTraceStart(net_log());
	EnableTraceLog();
	NetLog::ParametersCallback net_log_callback;
	std::string param = "bar";
	net_log_callback = NetLog::StringCallback("foo", &param);

	net_log()->AddGlobalEntry(NetLog::TYPE_CANCELLED, net_log_callback);
	net_log()->AddGlobalEntry(NetLog::TYPE_REQUEST_ALIVE);

	EndTraceAndFlush();
	trace_net_log_observer()->StopWatchForTraceStart();

	CapturingNetLog::CapturedEntryList entries;
	net_log()->GetEntries(&entries);
	EXPECT_EQ(2u, entries.size());
	EXPECT_EQ(2u, trace_events()->GetSize());
	const base::DictionaryValue* item1 = NULL;
	ASSERT_TRUE(trace_events()->GetDictionary(0, &item1));
	const base::DictionaryValue* item2 = NULL;
	ASSERT_TRUE(trace_events()->GetDictionary(1, &item2));

	TraceEntryInfo actual_item1 = GetTraceEntryInfoFromValue(*item1);
	TraceEntryInfo actual_item2 = GetTraceEntryInfoFromValue(*item2);
	EXPECT_EQ(kNetLogTracingCategory, actual_item1.category);
	EXPECT_EQ(base::StringPrintf("0x%d", entries[0].source.id), actual_item1.id);
	EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
	actual_item1.phase);
	EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_CANCELLED),
	actual_item1.name);
	EXPECT_EQ(NetLog::SourceTypeToString(entries[0].source.type),
	actual_item1.source_type);

	EXPECT_EQ(kNetLogTracingCategory, actual_item2.category);
	EXPECT_EQ(base::StringPrintf("0x%d", entries[1].source.id), actual_item2.id);
	EXPECT_EQ(std::string(1, TRACE_EVENT_PHASE_NESTABLE_ASYNC_INSTANT),
	actual_item2.phase);
	EXPECT_EQ(NetLog::EventTypeToString(NetLog::TYPE_REQUEST_ALIVE),
	actual_item2.name);
	EXPECT_EQ(NetLog::SourceTypeToString(entries[1].source.type),
	actual_item2.source_type);

	std::string item1_params;
	std::string item2_params;
	EXPECT_TRUE(item1->GetString("args.params.foo", &item1_params));
	EXPECT_EQ("bar", item1_params);

	EXPECT_TRUE(item2->GetString("args.params", &item2_params));
	EXPECT_TRUE(item2_params.empty());
	}

	} // namespace

	} // namespace net