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KamonHistogramTest.java
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KamonHistogramTest.java
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/*
* Copyright (c) 2017 Contributors to the Eclipse Foundation
*
* See the NOTICE file(s) distributed with this work for additional
* information regarding copyright ownership.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.internal.utils.metrics.instruments.histogram;
import static org.assertj.core.api.Assertions.assertThat;
import org.assertj.core.data.Percentage;
import org.junit.Before;
import org.junit.Test;
public class KamonHistogramTest {
private Histogram sut;
@Before
public void setup() {
sut = KamonHistogram.newHistogram("TestHistogram");
sut.reset();
}
@Test
public void record() {
sut.record(4711L);
final Long[] recordedValues = sut.getRecordedValues();
assertThat(recordedValues).hasSize(1);
assertThat(recordedValues[0]).isCloseTo(4711L, Percentage.withPercentage(1));
}
@Test
public void getRecordsDoesNotResetHistogram() {
sut.record(4711L);
assertThat(sut.getRecordedValues()).hasSize(1);
assertThat(sut.getRecordedValues()).hasSize(1);
}
@Test
public void resets() {
sut.record(4711L);
assertThat(sut.getRecordedValues()).hasSize(1);
sut.reset();
assertThat(sut.getRecordedValues()).hasSize(0);
}
}