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* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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 org.elasticsearch.monitor.fs;
import org.elasticsearch.test.ESTestCase;
import static org.hamcrest.CoreMatchers.equalTo;
public class DeviceStatsTests extends ESTestCase {
public void testDeviceStats() {
final int majorDeviceNumber = randomIntBetween(1, 1 << 8);
final int minorDeviceNumber = randomIntBetween(0, 1 << 5);
final String deviceName = randomAlphaOfLength(3);
final int readsCompleted = randomIntBetween(1, 1 << 16);
final int sectorsRead = randomIntBetween(8 * readsCompleted, 16 * readsCompleted);
final int writesCompleted = randomIntBetween(1, 1 << 16);
final int sectorsWritten = randomIntBetween(8 * writesCompleted, 16 * writesCompleted);
FsInfo.DeviceStats previous = new FsInfo.DeviceStats(
majorDeviceNumber,
minorDeviceNumber,
deviceName,
readsCompleted,
sectorsRead,
writesCompleted,
sectorsWritten,
null);
FsInfo.DeviceStats current = new FsInfo.DeviceStats(
majorDeviceNumber,
minorDeviceNumber,
deviceName,
readsCompleted + 1024,
sectorsRead + 16384,
writesCompleted + 2048,
sectorsWritten + 32768,
previous);
assertThat(current.operations(), equalTo(1024L + 2048L));
assertThat(current.readOperations(), equalTo(1024L));
assertThat(current.writeOperations(), equalTo(2048L));
assertThat(current.readKilobytes(), equalTo(16384L / 2));
assertThat(current.writeKilobytes(), equalTo(32768L / 2));
}
}