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/*
* Copyright (C) 2017 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 android.os;
import android.content.Context;
import android.content.SharedPreferences;
import android.perftests.utils.BenchmarkState;
import android.perftests.utils.PerfStatusReporter;
import android.support.test.InstrumentationRegistry;
import android.support.test.filters.LargeTest;
import android.support.test.runner.AndroidJUnit4;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
@RunWith(AndroidJUnit4.class)
@LargeTest
public class SharedPreferencesTest {
@Rule
public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();
@Test
public void timeCachedGetSharedPreferences() {
final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
final Context context = InstrumentationRegistry.getTargetContext();
// Do the real work once as we're only interested in cache-hit performance
SharedPreferences prefs = context.getSharedPreferences("test", Context.MODE_PRIVATE);
while (state.keepRunning()) {
prefs = context.getSharedPreferences("test", Context.MODE_PRIVATE);
}
}
}
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