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/*
* Copyright 2017, OpenCensus Authors
*
* 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
*
* 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 io.opencensus.trace;
import static com.google.common.truth.Truth.assertThat;
import static org.mockito.Matchers.eq;
import static org.mockito.Matchers.same;
import static org.mockito.Mockito.verify;
import java.util.Collections;
import java.util.EnumSet;
import java.util.Map;
import java.util.Random;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.Mockito;
/** Unit tests for {@link Span}. */
@RunWith(JUnit4.class)
public class SpanTest {
private Random random;
private SpanContext spanContext;
private SpanContext notSampledSpanContext;
private EnumSet<Span.Options> spanOptions;
@Before
public void setUp() {
random = new Random(1234);
spanContext =
SpanContext.create(
TraceId.generateRandomId(random),
SpanId.generateRandomId(random),
TraceOptions.builder().setIsSampled().build());
notSampledSpanContext =
SpanContext.create(
TraceId.generateRandomId(random),
SpanId.generateRandomId(random),
TraceOptions.DEFAULT);
spanOptions = EnumSet.of(Span.Options.RECORD_EVENTS);
}
@Test(expected = NullPointerException.class)
public void newSpan_WithNullContext() {
new NoopSpan(null, null);
}
@Test(expected = IllegalArgumentException.class)
public void newSpan_SampledContextAndNullOptions() {
new NoopSpan(spanContext, null);
}
@Test(expected = IllegalArgumentException.class)
public void newSpan_SampledContextAndEmptyOptions() {
new NoopSpan(spanContext, EnumSet.noneOf(Span.Options.class));
}
@Test
public void getOptions_WhenNullOptions() {
Span span = new NoopSpan(notSampledSpanContext, null);
assertThat(span.getOptions()).isEmpty();
}
@Test
public void getContextAndOptions() {
Span span = new NoopSpan(spanContext, spanOptions);
assertThat(span.getContext()).isEqualTo(spanContext);
assertThat(span.getOptions()).isEqualTo(spanOptions);
}
@Test
public void addAttributeCallsAddAttributesByDefault() {
Span span = Mockito.spy(new NoopSpan(spanContext, spanOptions));
span.putAttribute("MyKey", AttributeValue.booleanAttributeValue(true));
span.end();
verify(span)
.addAttributes(
eq(Collections.singletonMap("MyKey", AttributeValue.booleanAttributeValue(true))));
}
@Test
public void endCallsEndWithDefaultOptions() {
Span span = Mockito.spy(new NoopSpan(spanContext, spanOptions));
span.end();
verify(span).end(same(EndSpanOptions.DEFAULT));
}
// No-op implementation of the Span for testing only.
private static class NoopSpan extends Span {
private NoopSpan(SpanContext context, EnumSet<Span.Options> options) {
super(context, options);
}
@Override
public void addAttributes(Map<String, AttributeValue> attributes) {}
@Override
public void addAnnotation(String description, Map<String, AttributeValue> attributes) {}
@Override
public void addAnnotation(Annotation annotation) {}
@Override
public void addNetworkEvent(NetworkEvent networkEvent) {}
@Override
public void addLink(Link link) {}
@Override
public void end(EndSpanOptions options) {}
}
}
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