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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 com.google.common.testing.EqualsTester;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link SpanContext}. */
@RunWith(JUnit4.class)
public class SpanContextTest {
private static final byte[] firstTraceIdBytes =
new byte[] {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 'a'};
private static final byte[] secondTraceIdBytes =
new byte[] {0, 0, 0, 0, 0, 0, 0, '0', 0, 0, 0, 0, 0, 0, 0, 0};
private static final byte[] firstSpanIdBytes = new byte[] {0, 0, 0, 0, 0, 0, 0, 'a'};
private static final byte[] secondSpanIdBytes = new byte[] {'0', 0, 0, 0, 0, 0, 0, 0};
private static final Tracestate firstTracestate = Tracestate.builder().set("foo", "bar").build();
private static final Tracestate secondTracestate = Tracestate.builder().set("foo", "baz").build();
private static final SpanContext first =
SpanContext.create(
TraceId.fromBytes(firstTraceIdBytes),
SpanId.fromBytes(firstSpanIdBytes),
TraceOptions.DEFAULT,
firstTracestate);
private static final SpanContext second =
SpanContext.create(
TraceId.fromBytes(secondTraceIdBytes),
SpanId.fromBytes(secondSpanIdBytes),
TraceOptions.builder().setIsSampled(true).build(),
secondTracestate);
@Test
public void invalidSpanContext() {
assertThat(SpanContext.INVALID.getTraceId()).isEqualTo(TraceId.INVALID);
assertThat(SpanContext.INVALID.getSpanId()).isEqualTo(SpanId.INVALID);
assertThat(SpanContext.INVALID.getTraceOptions()).isEqualTo(TraceOptions.DEFAULT);
}
@Test
public void isValid() {
assertThat(SpanContext.INVALID.isValid()).isFalse();
assertThat(
SpanContext.create(
TraceId.fromBytes(firstTraceIdBytes), SpanId.INVALID, TraceOptions.DEFAULT)
.isValid())
.isFalse();
assertThat(
SpanContext.create(
TraceId.INVALID, SpanId.fromBytes(firstSpanIdBytes), TraceOptions.DEFAULT)
.isValid())
.isFalse();
assertThat(first.isValid()).isTrue();
assertThat(second.isValid()).isTrue();
}
@Test
public void getTraceId() {
assertThat(first.getTraceId()).isEqualTo(TraceId.fromBytes(firstTraceIdBytes));
assertThat(second.getTraceId()).isEqualTo(TraceId.fromBytes(secondTraceIdBytes));
}
@Test
public void getSpanId() {
assertThat(first.getSpanId()).isEqualTo(SpanId.fromBytes(firstSpanIdBytes));
assertThat(second.getSpanId()).isEqualTo(SpanId.fromBytes(secondSpanIdBytes));
}
@Test
public void getTraceOptions() {
assertThat(first.getTraceOptions()).isEqualTo(TraceOptions.DEFAULT);
assertThat(second.getTraceOptions())
.isEqualTo(TraceOptions.builder().setIsSampled(true).build());
}
@Test
public void getTracestate() {
assertThat(first.getTracestate()).isEqualTo(firstTracestate);
assertThat(second.getTracestate()).isEqualTo(secondTracestate);
}
@Test
public void spanContext_EqualsAndHashCode() {
EqualsTester tester = new EqualsTester();
tester.addEqualityGroup(
first,
SpanContext.create(
TraceId.fromBytes(firstTraceIdBytes),
SpanId.fromBytes(firstSpanIdBytes),
TraceOptions.DEFAULT),
SpanContext.create(
TraceId.fromBytes(firstTraceIdBytes),
SpanId.fromBytes(firstSpanIdBytes),
TraceOptions.builder().setIsSampled(false).build(),
firstTracestate));
tester.addEqualityGroup(
second,
SpanContext.create(
TraceId.fromBytes(secondTraceIdBytes),
SpanId.fromBytes(secondSpanIdBytes),
TraceOptions.builder().setIsSampled(true).build(),
secondTracestate));
tester.testEquals();
}
@Test
public void spanContext_ToString() {
assertThat(first.toString()).contains(TraceId.fromBytes(firstTraceIdBytes).toString());
assertThat(first.toString()).contains(SpanId.fromBytes(firstSpanIdBytes).toString());
assertThat(first.toString()).contains(TraceOptions.DEFAULT.toString());
assertThat(second.toString()).contains(TraceId.fromBytes(secondTraceIdBytes).toString());
assertThat(second.toString()).contains(SpanId.fromBytes(secondSpanIdBytes).toString());
assertThat(second.toString())
.contains(TraceOptions.builder().setIsSampled(true).build().toString());
}
}
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