/**
* Copyright 2014 Netflix, Inc.
* <p/>
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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.netflix.servo.monitor;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
public class BasicDistributionSummaryTest extends AbstractMonitorTest<BasicDistributionSummary> {
public BasicDistributionSummary newInstance(String name) {
return new BasicDistributionSummary(MonitorConfig.builder(name).build());
}
@Test
public void testGetValue() throws Exception {
BasicDistributionSummary m = newInstance("foo");
// initial values
assertEquals(m.getValue().longValue(), 0L);
assertEquals(m.getCount().longValue(), 0L);
assertEquals(m.getTotalAmount().longValue(), 0L);
assertEquals(m.getMax().longValue(), 0L);
assertEquals(m.getMin().longValue(), 0L);
m.record(42);
assertEquals(m.getValue().longValue(), 42L);
assertEquals(m.getTotalAmount().longValue(), 42L);
assertEquals(m.getCount().longValue(), 1L);
assertEquals(m.getMax().longValue(), 42L);
assertEquals(m.getMin().longValue(), 42L);
m.record(21);
assertEquals(m.getValue().longValue(), 31L);
assertEquals(m.getTotalAmount().longValue(), 63L);
assertEquals(m.getCount().longValue(), 2L);
assertEquals(m.getMax().longValue(), 42L);
assertEquals(m.getMin().longValue(), 21L);
}
@Test
public void testRecord0() throws Exception {
BasicDistributionSummary c = newInstance("foo");
assertEquals(c.getCount().longValue(), 0L);
c.record(42);
assertEquals(c.getCount().longValue(), 1L);
// Explicit 0 should be counted
c.record(0);
assertEquals(c.getCount().longValue(), 2L);
// Negative values should be ignored
c.record(-1);
assertEquals(c.getCount().longValue(), 2L);
}
}