mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Joshua Gross
24b79c1182
Summary: `std::this_thread::sleep_for` is not really precise and will attempt to sleep for "at least" that much time, but may sleep much longer depending on what CPUs are doing and scheduling policies. To get this to pass on my machine, I had to substantially increase the thresholds. Changelog: [Internal] Reviewed By: shergin Differential Revision: D20689571 fbshipit-source-id: f159420d24a95da2b5d95d49ed7882e783291e98
104 lines
2.9 KiB
C++
104 lines
2.9 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#include <chrono>
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#include <thread>
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#include <gtest/gtest.h>
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#include <react/mounting/MountingTelemetry.h>
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#include <react/utils/Telemetry.h>
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using namespace facebook::react;
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#define EXPECT_EQ_WITH_THRESHOLD(a, b, threshold) \
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EXPECT_TRUE((a >= b - threshold) && (a <= b + threshold))
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TEST(MountingTelemetryTest, timepoints) {
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auto threshold = int64_t{100};
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auto timepointA = telemetryTimePointNow();
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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auto timepointB = telemetryTimePointNow();
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auto duration = telemetryDurationToMilliseconds(timepointB - timepointA);
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EXPECT_EQ_WITH_THRESHOLD(duration, 100, threshold);
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}
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TEST(MountingTelemetryTest, normalUseCase) {
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auto threshold = int64_t{100};
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auto telemetry = MountingTelemetry{};
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telemetry.willCommit();
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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telemetry.willLayout();
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std::this_thread::sleep_for(std::chrono::milliseconds(200));
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telemetry.didLayout();
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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telemetry.didCommit();
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std::this_thread::sleep_for(std::chrono::milliseconds(300));
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telemetry.willMount();
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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telemetry.didMount();
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auto commitDuration = telemetryDurationToMilliseconds(
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telemetry.getCommitEndTime() - telemetry.getCommitStartTime());
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auto layoutDuration = telemetryDurationToMilliseconds(
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telemetry.getLayoutEndTime() - telemetry.getLayoutStartTime());
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auto mountDuration = telemetryDurationToMilliseconds(
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telemetry.getMountEndTime() - telemetry.getMountStartTime());
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EXPECT_EQ_WITH_THRESHOLD(commitDuration, 400, threshold * 2);
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EXPECT_EQ_WITH_THRESHOLD(layoutDuration, 200, threshold);
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EXPECT_EQ_WITH_THRESHOLD(mountDuration, 100, threshold);
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}
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TEST(MountingTelemetryTest, abnormalUseCases) {
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// Calling `did` before `will` should crash.
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EXPECT_DEATH_IF_SUPPORTED(
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{
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auto telemetry = MountingTelemetry{};
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telemetry.didDiff();
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},
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"diffStartTime_");
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EXPECT_DEATH_IF_SUPPORTED(
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{
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auto telemetry = MountingTelemetry{};
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telemetry.didCommit();
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},
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"commitStartTime_");
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EXPECT_DEATH_IF_SUPPORTED(
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{
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auto telemetry = MountingTelemetry{};
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telemetry.didMount();
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},
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"mountStartTime_");
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// Getting `start` *or* `end` timepoints before a pair of `will` and `did`
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// should crash.
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EXPECT_DEATH_IF_SUPPORTED(
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{
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auto telemetry = MountingTelemetry{};
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telemetry.willCommit();
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telemetry.getCommitStartTime();
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},
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"commitEndTime_");
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EXPECT_DEATH_IF_SUPPORTED(
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{
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auto telemetry = MountingTelemetry{};
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telemetry.willCommit();
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telemetry.getCommitEndTime();
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},
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"commitEndTime_");
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}
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