xref: /aosp_15_r20/external/libchrome/base/json/json_perftest.cc (revision 635a864187cb8b6c713ff48b7e790a6b21769273)
1*635a8641SAndroid Build Coastguard Worker // Copyright 2017 The Chromium Authors. All rights reserved.
2*635a8641SAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be
3*635a8641SAndroid Build Coastguard Worker // found in the LICENSE file.
4*635a8641SAndroid Build Coastguard Worker 
5*635a8641SAndroid Build Coastguard Worker #include "base/json/json_reader.h"
6*635a8641SAndroid Build Coastguard Worker #include "base/json/json_writer.h"
7*635a8641SAndroid Build Coastguard Worker #include "base/memory/ptr_util.h"
8*635a8641SAndroid Build Coastguard Worker #include "base/time/time.h"
9*635a8641SAndroid Build Coastguard Worker #include "base/values.h"
10*635a8641SAndroid Build Coastguard Worker #include "testing/gtest/include/gtest/gtest.h"
11*635a8641SAndroid Build Coastguard Worker #include "testing/perf/perf_test.h"
12*635a8641SAndroid Build Coastguard Worker 
13*635a8641SAndroid Build Coastguard Worker namespace base {
14*635a8641SAndroid Build Coastguard Worker 
15*635a8641SAndroid Build Coastguard Worker namespace {
16*635a8641SAndroid Build Coastguard Worker // Generates a simple dictionary value with simple data types, a string and a
17*635a8641SAndroid Build Coastguard Worker // list.
GenerateDict()18*635a8641SAndroid Build Coastguard Worker std::unique_ptr<DictionaryValue> GenerateDict() {
19*635a8641SAndroid Build Coastguard Worker   auto root = std::make_unique<DictionaryValue>();
20*635a8641SAndroid Build Coastguard Worker   root->SetDouble("Double", 3.141);
21*635a8641SAndroid Build Coastguard Worker   root->SetBoolean("Bool", true);
22*635a8641SAndroid Build Coastguard Worker   root->SetInteger("Int", 42);
23*635a8641SAndroid Build Coastguard Worker   root->SetString("String", "Foo");
24*635a8641SAndroid Build Coastguard Worker 
25*635a8641SAndroid Build Coastguard Worker   auto list = std::make_unique<ListValue>();
26*635a8641SAndroid Build Coastguard Worker   list->Set(0, std::make_unique<Value>(2.718));
27*635a8641SAndroid Build Coastguard Worker   list->Set(1, std::make_unique<Value>(false));
28*635a8641SAndroid Build Coastguard Worker   list->Set(2, std::make_unique<Value>(123));
29*635a8641SAndroid Build Coastguard Worker   list->Set(3, std::make_unique<Value>("Bar"));
30*635a8641SAndroid Build Coastguard Worker   root->Set("List", std::move(list));
31*635a8641SAndroid Build Coastguard Worker 
32*635a8641SAndroid Build Coastguard Worker   return root;
33*635a8641SAndroid Build Coastguard Worker }
34*635a8641SAndroid Build Coastguard Worker 
35*635a8641SAndroid Build Coastguard Worker // Generates a tree-like dictionary value with a size of O(breadth ** depth).
GenerateLayeredDict(int breadth,int depth)36*635a8641SAndroid Build Coastguard Worker std::unique_ptr<DictionaryValue> GenerateLayeredDict(int breadth, int depth) {
37*635a8641SAndroid Build Coastguard Worker   if (depth == 1)
38*635a8641SAndroid Build Coastguard Worker     return GenerateDict();
39*635a8641SAndroid Build Coastguard Worker 
40*635a8641SAndroid Build Coastguard Worker   auto root = GenerateDict();
41*635a8641SAndroid Build Coastguard Worker   auto next = GenerateLayeredDict(breadth, depth - 1);
42*635a8641SAndroid Build Coastguard Worker 
43*635a8641SAndroid Build Coastguard Worker   for (int i = 0; i < breadth; ++i) {
44*635a8641SAndroid Build Coastguard Worker     root->Set("Dict" + std::to_string(i), next->CreateDeepCopy());
45*635a8641SAndroid Build Coastguard Worker   }
46*635a8641SAndroid Build Coastguard Worker 
47*635a8641SAndroid Build Coastguard Worker   return root;
48*635a8641SAndroid Build Coastguard Worker }
49*635a8641SAndroid Build Coastguard Worker 
50*635a8641SAndroid Build Coastguard Worker }  // namespace
51*635a8641SAndroid Build Coastguard Worker 
52*635a8641SAndroid Build Coastguard Worker class JSONPerfTest : public testing::Test {
53*635a8641SAndroid Build Coastguard Worker  public:
TestWriteAndRead(int breadth,int depth)54*635a8641SAndroid Build Coastguard Worker   void TestWriteAndRead(int breadth, int depth) {
55*635a8641SAndroid Build Coastguard Worker     std::string description = "Breadth: " + std::to_string(breadth) +
56*635a8641SAndroid Build Coastguard Worker                               ", Depth: " + std::to_string(depth);
57*635a8641SAndroid Build Coastguard Worker     auto dict = GenerateLayeredDict(breadth, depth);
58*635a8641SAndroid Build Coastguard Worker     std::string json;
59*635a8641SAndroid Build Coastguard Worker 
60*635a8641SAndroid Build Coastguard Worker     TimeTicks start_write = TimeTicks::Now();
61*635a8641SAndroid Build Coastguard Worker     JSONWriter::Write(*dict, &json);
62*635a8641SAndroid Build Coastguard Worker     TimeTicks end_write = TimeTicks::Now();
63*635a8641SAndroid Build Coastguard Worker     perf_test::PrintResult("Write", "", description,
64*635a8641SAndroid Build Coastguard Worker                            (end_write - start_write).InMillisecondsF(), "ms",
65*635a8641SAndroid Build Coastguard Worker                            true);
66*635a8641SAndroid Build Coastguard Worker 
67*635a8641SAndroid Build Coastguard Worker     TimeTicks start_read = TimeTicks::Now();
68*635a8641SAndroid Build Coastguard Worker     JSONReader::Read(json);
69*635a8641SAndroid Build Coastguard Worker     TimeTicks end_read = TimeTicks::Now();
70*635a8641SAndroid Build Coastguard Worker     perf_test::PrintResult("Read", "", description,
71*635a8641SAndroid Build Coastguard Worker                            (end_read - start_read).InMillisecondsF(), "ms",
72*635a8641SAndroid Build Coastguard Worker                            true);
73*635a8641SAndroid Build Coastguard Worker   }
74*635a8641SAndroid Build Coastguard Worker };
75*635a8641SAndroid Build Coastguard Worker 
TEST_F(JSONPerfTest,StressTest)76*635a8641SAndroid Build Coastguard Worker TEST_F(JSONPerfTest, StressTest) {
77*635a8641SAndroid Build Coastguard Worker   for (int i = 0; i < 4; ++i) {
78*635a8641SAndroid Build Coastguard Worker     for (int j = 0; j < 12; ++j) {
79*635a8641SAndroid Build Coastguard Worker       TestWriteAndRead(i + 1, j + 1);
80*635a8641SAndroid Build Coastguard Worker     }
81*635a8641SAndroid Build Coastguard Worker   }
82*635a8641SAndroid Build Coastguard Worker }
83*635a8641SAndroid Build Coastguard Worker 
84*635a8641SAndroid Build Coastguard Worker }  // namespace base
85