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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* 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.cluster;
import org.elasticsearch.test.ElasticsearchTestCase;
import org.junit.Test;
import static org.hamcrest.Matchers.equalTo;
public class DiskUsageTests extends ElasticsearchTestCase {
@Test
public void diskUsageCalcTest() {
DiskUsage du = new DiskUsage("node1", 100, 40);
assertThat(du.getFreeDiskAsPercentage(), equalTo(40.0));
assertThat(du.getFreeBytes(), equalTo(40L));
assertThat(du.getUsedBytes(), equalTo(60L));
assertThat(du.getTotalBytes(), equalTo(100L));
}
@Test
public void randomDiskUsageTest() {
int iters = atLeast(1000);
for (int i = 1; i < iters; i++) {
long total = between(Integer.MIN_VALUE, Integer.MAX_VALUE);
long free = between(Integer.MIN_VALUE, Integer.MAX_VALUE);
if (free > total || total <= 0) {
try {
new DiskUsage("random", total, free);
fail("should never reach this");
} catch (IllegalStateException e) {
}
} else {
DiskUsage du = new DiskUsage("random", total, free);
assertThat(du.getFreeBytes(), equalTo(free));
assertThat(du.getTotalBytes(), equalTo(total));
assertThat(du.getUsedBytes(), equalTo(total - free));
assertThat(du.getFreeDiskAsPercentage(), equalTo(100.0 * ((double)free / total)));
}
}
}
}
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