103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
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// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/json/json_reader.h"
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#include "base/json/json_writer.h"
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#include "base/memory/ptr_util.h"
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#include "base/strings/string_number_conversions.h"
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#include "base/time/time.h"
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#include "base/values.h"
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#include "build/build_config.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#include "testing/perf/perf_result_reporter.h"
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namespace base {
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namespace {
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constexpr char kMetricPrefixJSON[] = "JSON.";
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constexpr char kMetricReadTime[] = "read_time";
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constexpr char kMetricWriteTime[] = "write_time";
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perf_test::PerfResultReporter SetUpReporter(const std::string& story_name) {
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perf_test::PerfResultReporter reporter(kMetricPrefixJSON, story_name);
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reporter.RegisterImportantMetric(kMetricReadTime, "ms");
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reporter.RegisterImportantMetric(kMetricWriteTime, "ms");
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return reporter;
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}
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// Generates a simple dictionary value with simple data types, a string and a
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// list.
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DictionaryValue GenerateDict() {
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DictionaryValue root;
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root.SetDoubleKey("Double", 3.141);
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root.SetBoolKey("Bool", true);
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root.SetIntKey("Int", 42);
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root.SetStringKey("String", "Foo");
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ListValue list;
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list.Append(2.718);
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list.Append(false);
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list.Append(123);
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list.Append("Bar");
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root.SetKey("List", std::move(list));
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return root;
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}
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// Generates a tree-like dictionary value with a size of O(breadth ** depth).
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DictionaryValue GenerateLayeredDict(int breadth, int depth) {
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if (depth == 1)
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return GenerateDict();
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DictionaryValue root = GenerateDict();
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DictionaryValue next = GenerateLayeredDict(breadth, depth - 1);
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for (int i = 0; i < breadth; ++i) {
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root.SetKey("Dict" + base::NumberToString(i), next.Clone());
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}
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return root;
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}
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} // namespace
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class JSONPerfTest : public testing::Test {
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public:
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void TestWriteAndRead(int breadth, int depth) {
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std::string description = "Breadth: " + base::NumberToString(breadth) +
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", Depth: " + base::NumberToString(depth);
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DictionaryValue dict = GenerateLayeredDict(breadth, depth);
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std::string json;
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TimeTicks start_write = TimeTicks::Now();
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JSONWriter::Write(dict, &json);
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TimeTicks end_write = TimeTicks::Now();
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auto reporter = SetUpReporter("breadth_" + base::NumberToString(breadth) +
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"_depth_" + base::NumberToString(depth));
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reporter.AddResult(kMetricWriteTime, end_write - start_write);
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TimeTicks start_read = TimeTicks::Now();
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JSONReader::Read(json);
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TimeTicks end_read = TimeTicks::Now();
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reporter.AddResult(kMetricReadTime, end_read - start_read);
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}
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};
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// Times out on Android (crbug.com/906686).
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#if defined(OS_ANDROID)
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#define MAYBE_StressTest DISABLED_StressTest
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#else
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#define MAYBE_StressTest StressTest
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#endif
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TEST_F(JSONPerfTest, MAYBE_StressTest) {
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for (int i = 0; i < 4; ++i) {
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for (int j = 0; j < 12; ++j) {
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TestWriteAndRead(i + 1, j + 1);
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}
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}
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}
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} // namespace base
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