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StartedKamonTimerTest.java
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StartedKamonTimerTest.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.timer;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatCode;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import java.util.List;
import java.util.Map;
import org.assertj.core.api.Assertions;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.junit.MockitoJUnitRunner;
@RunWith(MockitoJUnitRunner.class)
public class StartedKamonTimerTest {
private StartedTimer sut;
@Before
public void setup() {
sut = Timers.newTimer("TestTimer").start();
}
@Test
public void getName() {
assertThat(sut.getName()).isEqualTo("TestTimer");
}
@Test
public void getOnStopHandlers() {
final OnStopHandler onStopHandler = mock(OnStopHandler.class);
sut.onStop(onStopHandler);
final List<OnStopHandler> onStopHandlers = sut.getOnStopHandlers();
Assertions.assertThat(onStopHandlers)
.hasSize(2)
.contains(onStopHandler);
}
@Test
public void onStopIsCalled() {
final OnStopHandler onStopHandler = mock(OnStopHandler.class);
sut.onStop(onStopHandler);
final StoppedTimer stopped = sut.stop();
verify(onStopHandler).handleStoppedTimer(stopped);
}
@Test
public void isRunning() {
assertThat(sut.isRunning()).isTrue();
sut.stop();
assertThat(sut.isRunning()).isFalse();
}
@Test
public void stopAStoppedTimerCausesNoException() {
sut.stop();
assertThatCode(() -> sut.stop()).doesNotThrowAnyException();
}
@Test
public void getSegments() {
assertThat(sut.getSegments().keySet()).isEmpty();
final StartedTimer testSegment = sut.startNewSegment("TEST");
final Map<String, StartedTimer> segments = sut.getSegments();
Assertions.assertThat(segments).hasSize(1);
assertThat(segments).containsEntry("TEST", testSegment);
}
@Test
public void segmentHasSameTags() {
sut.tag("tag1", "value1");
final StartedTimer testSegment = sut.startNewSegment("TEST");
final Map<String, String> segmentTags = testSegment.getTags();
final Map<String, String> parentTags = sut.getTags();
assertThat(parentTags.keySet()).hasSize(2);
assertThat(parentTags).containsEntry("segment", "overall");
assertThat(parentTags).containsEntry("tag1", "value1");
assertThat(segmentTags.keySet()).hasSize(2);
assertThat(segmentTags).containsEntry("segment", "TEST");
assertThat(segmentTags).containsEntry("tag1", "value1");
}
@Test
public void segmentsAreGettingStoppedToo() {
final StartedTimer testSegment = sut.startNewSegment("TEST");
assertThat(testSegment.isRunning()).isTrue();
sut.stop();
assertThat(testSegment.isRunning()).isFalse();
}
@Test
public void onStopHandlersOfSegmentsAreCalledToo() {
final OnStopHandler onStopHandler = mock(OnStopHandler.class);
final OnStopHandler segmentOnStopHandler = mock(OnStopHandler.class);
sut.onStop(onStopHandler);
final StartedTimer testSegment = sut.startNewSegment("TEST");
testSegment.onStop(segmentOnStopHandler);
final StoppedTimer stop = sut.stop();
verify(onStopHandler).handleStoppedTimer(stop);
verify(segmentOnStopHandler).handleStoppedTimer(any(StoppedTimer.class));
}
@Test
public void startTimeStampAlwaysSet() {
assertThat(sut.getStartNanoTime()).isPositive();
}
@Test
public void canHandleAlreadyStoppedSegments() {
final StartedTimer testSegment = sut.startNewSegment("Test");
testSegment.stop();
sut.stop();
// No Exception occurred if successful.
}
@Test
public void taggingWorks() {
sut.tag("stringTag", "1");
sut.tag("longTag", 1L);
sut.tag("booleanTag", false);
sut.tag("doubleTag", 1.0);
assertThat(sut.getTags()).hasSize(5); // 4 tags + segment tag
assertThat(sut.getTag("stringTag")).isEqualTo("1");
assertThat(sut.getTag("longTag")).isEqualTo("1");
assertThat(sut.getTag("booleanTag")).isEqualTo("false");
assertThat(sut.getTag("doubleTag")).isEqualTo("1.0");
}
}