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FrameTimingBenchmark.kt
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FrameTimingBenchmark.kt
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/*
* Copyright 2022 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.macrobenchmark.benchmark.frames
import android.content.Intent
import android.graphics.Point
import androidx.benchmark.macro.CompilationMode
import androidx.benchmark.macro.ExperimentalMetricApi
import androidx.benchmark.macro.FrameTimingMetric
import androidx.benchmark.macro.StartupMode
import androidx.benchmark.macro.TraceSectionMetric
import androidx.benchmark.macro.junit4.MacrobenchmarkRule
import androidx.test.ext.junit.runners.AndroidJUnit4
import androidx.test.filters.LargeTest
import androidx.test.uiautomator.By
import androidx.test.uiautomator.Direction
import com.example.macrobenchmark.benchmark.util.DEFAULT_ITERATIONS
import com.example.macrobenchmark.benchmark.util.TARGET_PACKAGE
import org.junit.Rule
import org.junit.Test
import org.junit.runner.RunWith
@LargeTest
@RunWith(AndroidJUnit4::class)
class FrameTimingBenchmark {
@get:Rule
val benchmarkRule = MacrobenchmarkRule()
// [START macrobenchmark_control_your_app]
@Test
fun scrollList() {
benchmarkRule.measureRepeated(
// [START_EXCLUDE]
packageName = TARGET_PACKAGE,
metrics = listOf(FrameTimingMetric()),
// Try switching to different compilation modes to see the effect
// it has on frame timing metrics.
compilationMode = CompilationMode.None(),
startupMode = StartupMode.WARM, // restarts activity each iteration
iterations = DEFAULT_ITERATIONS,
// [END_EXCLUDE]
setupBlock = {
// Before starting to measure, navigate to the UI to be measured
val intent = Intent("$packageName.RECYCLER_VIEW_ACTIVITY")
startActivityAndWait(intent)
}
) {
val recycler = device.findObject(By.res(packageName, "recycler"))
// Set gesture margin to avoid triggering gesture navigation
// with input events from automation.
recycler.setGestureMargin(device.displayWidth / 5)
// Scroll down several times
repeat(3) { recycler.fling(Direction.DOWN) }
}
}
// [END macrobenchmark_control_your_app]
@OptIn(ExperimentalMetricApi::class)
@Test
fun scrollComposeList() {
benchmarkRule.measureRepeated(
// [START_EXCLUDE]
packageName = TARGET_PACKAGE,
metrics = listOf(
FrameTimingMetric(),
// Measure custom trace sections by name EntryRow (which is added to the EntryRow composable).
// Mode.Sum measure combined duration and also how many times it occurred in the trace.
// This way, you can estimate whether a composable recomposes more than it should.
TraceSectionMetric("EntryRowCustomTrace", TraceSectionMetric.Mode.Sum),
// This trace section takes into account the SQL wildcard character %,
// which can find trace sections without knowing the full name.
// This way, you can measure composables produced by the composition tracing
// and measure how long they took and how many times they recomposed.
// WARNING: This metric only shows results when running with composition tracing, otherwise it won't be visible in the outputs.
TraceSectionMetric("%EntryRow (%", TraceSectionMetric.Mode.Sum),
),
// Try switching to different compilation modes to see the effect
// it has on frame timing metrics.
compilationMode = CompilationMode.None(),
startupMode = StartupMode.WARM, // restarts activity each iteration
iterations = DEFAULT_ITERATIONS,
// [END_EXCLUDE]
setupBlock = {
// Before starting to measure, navigate to the UI to be measured
val intent = Intent("$packageName.COMPOSE_ACTIVITY")
startActivityAndWait(intent)
}
) {
/**
* Compose does not have view IDs so we cannot directly access composables from UiAutomator.
* To access a composable we need to set:
* 1) Modifier.semantics { testTagsAsResourceId = true } once, high in the compose hierarchy
* 2) Add Modifier.testTag("someIdentifier") to all of the composables you want to access
*
* Once done that, we can access the composable using By.res("someIdentifier")
*/
val column = device.findObject(By.res("myLazyColumn"))
// Set gesture margin to avoid triggering gesture navigation
// with input events from automation.
column.setGestureMargin(device.displayWidth / 5)
// Scroll down several times
repeat(1) { column.drag(Point(column.visibleCenter.x, column.visibleBounds.top)) }
}
}
}