chrome/browser/task_profiler/task_profiler_data_serializer_unittest.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <string>
   6
   7 #include "base/basictypes.h"
   8 #include "base/json/json_writer.h"
   9 #include "base/process/process_handle.h"
  10 #include "base/strings/string_number_conversions.h"
  11 #include "base/tracked_objects.h"
  12 #include "base/values.h"
  13 #include "chrome/browser/task_profiler/task_profiler_data_serializer.h"
  14 #include "content/public/common/process_type.h"
  15 #include "testing/gtest/include/gtest/gtest.h"
  16
  17 namespace {
  18
  19 std::string GetProcessIdString() {
  20   return base::IntToString(base::GetCurrentProcId());
  21 }
  22
  23 void ExpectSerialization(
  24     const tracked_objects::ProcessDataSnapshot& process_data,
  25     int process_type,
  26     const std::string& expected_json) {
  27   base::DictionaryValue serialized_value;
  28   task_profiler::TaskProfilerDataSerializer::ToValue(
  29       process_data, process_type, &serialized_value);
  30
  31   std::string serialized_json;
  32   base::JSONWriter::Write(&serialized_value, &serialized_json);
  33
  34   EXPECT_EQ(expected_json, serialized_json);
  35 }
  36
  37 }  // anonymous namespace
  38
  39 // Tests the JSON serialization format for profiled process data.
  40 TEST(TaskProfilerDataSerializerTest, SerializeProcessDataToJson) {
  41   {
  42     // Empty data.
  43     tracked_objects::ProcessDataSnapshot process_data;
  44     int process_type = content::PROCESS_TYPE_BROWSER;
  45     ExpectSerialization(process_data, process_type,
  46                         "{"
  47                           "\"descendants\":["
  48                           "],"
  49                           "\"list\":["
  50                           "],"
  51                           "\"process_id\":" + GetProcessIdString() + ","
  52                           "\"process_type\":\"Browser\""
  53                         "}");
  54   }
  55
  56   {
  57     // Non-empty data.
  58     tracked_objects::ProcessDataSnapshot process_data;
  59
  60     tracked_objects::BirthOnThreadSnapshot parent;
  61     parent.location.file_name = "path/to/foo.cc";
  62     parent.location.function_name = "WhizBang";
  63     parent.location.line_number = 101;
  64     parent.thread_name = "CrBrowserMain";
  65
  66     tracked_objects::BirthOnThreadSnapshot child;
  67     child.location.file_name = "path/to/bar.cc";
  68     child.location.function_name = "FizzBoom";
  69     child.location.line_number = 433;
  70     child.thread_name = "Chrome_IOThread";
  71
  72
  73     // Add a snapshot.
  74     process_data.tasks.push_back(tracked_objects::TaskSnapshot());
  75     process_data.tasks.back().birth = parent;
  76     process_data.tasks.back().death_data.count = 37;
  77     process_data.tasks.back().death_data.run_duration_max = 5;
  78     process_data.tasks.back().death_data.run_duration_sample = 3;
  79     process_data.tasks.back().death_data.run_duration_sum = 17;
  80     process_data.tasks.back().death_data.queue_duration_max = 53;
  81     process_data.tasks.back().death_data.queue_duration_sample = 13;
  82     process_data.tasks.back().death_data.queue_duration_sum = 79;
  83     process_data.tasks.back().death_thread_name = "WorkerPool/-1340960768";
  84
  85     // Add a second snapshot.
  86     process_data.tasks.push_back(tracked_objects::TaskSnapshot());
  87     process_data.tasks.back().birth = child;
  88     process_data.tasks.back().death_data.count = 41;
  89     process_data.tasks.back().death_data.run_duration_max = 205;
  90     process_data.tasks.back().death_data.run_duration_sample = 203;
  91     process_data.tasks.back().death_data.run_duration_sum = 2017;
  92     process_data.tasks.back().death_data.queue_duration_max = 2053;
  93     process_data.tasks.back().death_data.queue_duration_sample = 2013;
  94     process_data.tasks.back().death_data.queue_duration_sum = 2079;
  95     process_data.tasks.back().death_thread_name = "PAC thread #3";
  96
  97     // Add a parent-child pair.
  98     process_data.descendants.push_back(
  99         tracked_objects::ParentChildPairSnapshot());
 100     process_data.descendants.back().parent = parent;
 101     process_data.descendants.back().child = child;
 102
 103     int process_type = content::PROCESS_TYPE_RENDERER;
 104     ExpectSerialization(process_data, process_type,
 105                        "{"
 106                           "\"descendants\":["
 107                              "{"
 108                                "\"child_location\":{"
 109                                   "\"file_name\":\"path/to/bar.cc\","
 110                                   "\"function_name\":\"FizzBoom\","
 111                                  "\"line_number\":433"
 112                                "},"
 113                                "\"child_thread\":\"Chrome_IOThread\","
 114                                "\"parent_location\":{"
 115                                   "\"file_name\":\"path/to/foo.cc\","
 116                                   "\"function_name\":\"WhizBang\","
 117                                   "\"line_number\":101"
 118                                "},"
 119                                "\"parent_thread\":\"CrBrowserMain\""
 120                              "}"
 121                           "],"
 122                           "\"list\":[{"
 123                              "\"birth_location\":{"
 124                                 "\"file_name\":\"path/to/foo.cc\","
 125                                 "\"function_name\":\"WhizBang\","
 126                                 "\"line_number\":101"
 127                              "},"
 128                              "\"birth_thread\":\"CrBrowserMain\","
 129                              "\"death_data\":{"
 130                                 "\"count\":37,"
 131                                 "\"queue_ms\":79,"
 132                                 "\"queue_ms_max\":53,"
 133                                 "\"queue_ms_sample\":13,"
 134                                 "\"run_ms\":17,"
 135                                 "\"run_ms_max\":5,"
 136                                 "\"run_ms_sample\":3"
 137                              "},"
 138                              "\"death_thread\":\"WorkerPool/-1340960768\""
 139                           "},{"
 140                              "\"birth_location\":{"
 141                                 "\"file_name\":\"path/to/bar.cc\","
 142                                 "\"function_name\":\"FizzBoom\","
 143                                 "\"line_number\":433"
 144                              "},"
 145                              "\"birth_thread\":\"Chrome_IOThread\","
 146                              "\"death_data\":{"
 147                                 "\"count\":41,"
 148                                 "\"queue_ms\":2079,"
 149                                 "\"queue_ms_max\":2053,"
 150                                 "\"queue_ms_sample\":2013,"
 151                                 "\"run_ms\":2017,"
 152                                 "\"run_ms_max\":205,"
 153                                 "\"run_ms_sample\":203"
 154                              "},"
 155                              "\"death_thread\":\"PAC thread #3\""
 156                           "}],"
 157                           "\"process_id\":" + GetProcessIdString() + ","
 158                           "\"process_type\":\"Tab\""
 159                         "}");
 160   }
 161 }