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September 21, 2017 07:47
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From android-perf-testing codelab
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/* | |
* Copyright 2015, Google Inc. | |
* | |
* 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.google.android.perftesting.testrules; | |
import android.os.Trace; | |
import org.junit.rules.ExternalResource; | |
import org.junit.runner.Description; | |
import org.junit.runners.model.Statement; | |
/** | |
* This rule enables {@link Trace Tracing} for each test. The section name | |
* used for the Trace API is the name of the test being run. | |
* | |
* To enable AndroidTracing on a test simply add this rule like so and it will be enabled/disabled | |
* when the platform support for Tracing exists (API Level 18 or higher). | |
* | |
* <pre> | |
* @Rule | |
* public EnableTestTracing mEnableTestTracing = new EnableTestTracing(); | |
* </pre> | |
*/ | |
public class EnableTestTracing extends ExternalResource { | |
private String mTestName; | |
@Override | |
public Statement apply(Statement base, Description description) { | |
mTestName = description.getMethodName(); | |
return super.apply(base, description); | |
} | |
@Override | |
public void before() { | |
if (android.os.Build.VERSION.SDK_INT >= 18) { | |
Trace.beginSection(mTestName); | |
} | |
} | |
@Override | |
public void after() { | |
if (android.os.Build.VERSION.SDK_INT >= 18) { | |
Trace.endSection(); | |
} | |
} | |
} |
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