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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.platform.longevity.listeners;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.support.annotation.VisibleForTesting;
import org.junit.runner.Description;
import org.junit.runner.notification.RunNotifier;
/**
* An {@link ActionListener} for terminating early on test end due to low battery.
*/
public final class BatteryTerminator extends RunTerminator {
@VisibleForTesting
static final String OPTION = "min-battery";
private static final double DEFAULT = 0.05; // 5% battery
private final Context mContext;
private final double mMinBattery;
public BatteryTerminator(RunNotifier notifier, Bundle args, Context context) {
super(notifier);
mMinBattery = Double.parseDouble(args.getString(OPTION, String.valueOf(DEFAULT)));
mContext = context;
}
/**
* Returns the battery level of the current device, in percent format (0.05 = 5%).
*/
private double getBatteryLevel() {
Intent batteryIntent =
mContext.registerReceiver(null, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
int level = batteryIntent.getIntExtra("level", -1);
int scale = batteryIntent.getIntExtra("scale", -1);
if (level < 0 || scale <= 0) {
throw new RuntimeException("Failed to get proper battery levels.");
}
return (double)level / (double)scale;
}
@Override
public void testFinished(Description description) {
if (getBatteryLevel() < mMinBattery) {
kill(String.format("battery fell below %.2f%%", mMinBattery * 100.0f));
}
}
}
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