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85 lines
2.5 KiB
85 lines
2.5 KiB
4 months ago
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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/time/time.h"
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#include "base/values.h"
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#include "testing/gtest/include/gtest/gtest.h"
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#include "testing/perf/perf_test.h"
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namespace base {
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namespace {
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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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std::unique_ptr<DictionaryValue> GenerateDict() {
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auto root = std::make_unique<DictionaryValue>();
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root->SetDouble("Double", 3.141);
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root->SetBoolean("Bool", true);
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root->SetInteger("Int", 42);
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root->SetString("String", "Foo");
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auto list = std::make_unique<ListValue>();
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list->Set(0, std::make_unique<Value>(2.718));
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list->Set(1, std::make_unique<Value>(false));
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list->Set(2, std::make_unique<Value>(123));
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list->Set(3, std::make_unique<Value>("Bar"));
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root->Set("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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std::unique_ptr<DictionaryValue> GenerateLayeredDict(int breadth, int depth) {
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if (depth == 1)
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return GenerateDict();
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auto root = GenerateDict();
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auto next = GenerateLayeredDict(breadth, depth - 1);
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for (int i = 0; i < breadth; ++i) {
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root->Set("Dict" + std::to_string(i), next->CreateDeepCopy());
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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: " + std::to_string(breadth) +
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", Depth: " + std::to_string(depth);
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auto 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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perf_test::PrintResult("Write", "", description,
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(end_write - start_write).InMillisecondsF(), "ms",
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true);
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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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perf_test::PrintResult("Read", "", description,
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(end_read - start_read).InMillisecondsF(), "ms",
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true);
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}
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};
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TEST_F(JSONPerfTest, 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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