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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 TraceOptions}. */
@RunWith(JUnit4.class)
public class TraceOptionsTest {
private static final byte[] firstBytes = {(byte) 0xff};
private static final byte[] secondBytes = {1};
private static final byte[] thirdBytes = {6};
@Test
public void getOptions() {
assertThat(TraceOptions.DEFAULT.getOptions()).isEqualTo(0);
assertThat(TraceOptions.builder().setIsSampled(false).build().getOptions()).isEqualTo(0);
assertThat(TraceOptions.builder().setIsSampled(true).build().getOptions()).isEqualTo(1);
assertThat(TraceOptions.builder().setIsSampled(true).setIsSampled(false).build().getOptions())
.isEqualTo(0);
assertThat(TraceOptions.fromBytes(firstBytes).getOptions()).isEqualTo(-1);
assertThat(TraceOptions.fromBytes(secondBytes).getOptions()).isEqualTo(1);
assertThat(TraceOptions.fromBytes(thirdBytes).getOptions()).isEqualTo(6);
}
@Test
public void isSampled() {
assertThat(TraceOptions.DEFAULT.isSampled()).isFalse();
assertThat(TraceOptions.builder().setIsSampled(true).build().isSampled()).isTrue();
}
@Test
public void toFromBytes() {
assertThat(TraceOptions.fromBytes(firstBytes).getBytes()).isEqualTo(firstBytes);
assertThat(TraceOptions.fromBytes(secondBytes).getBytes()).isEqualTo(secondBytes);
assertThat(TraceOptions.fromBytes(thirdBytes).getBytes()).isEqualTo(thirdBytes);
}
@Test
public void builder_FromOptions() {
assertThat(
TraceOptions.builder(TraceOptions.fromBytes(thirdBytes))
.setIsSampled(true)
.build()
.getOptions())
.isEqualTo(6 | 1);
}
@Test
public void traceOptions_EqualsAndHashCode() {
EqualsTester tester = new EqualsTester();
tester.addEqualityGroup(TraceOptions.DEFAULT);
tester.addEqualityGroup(
TraceOptions.fromBytes(secondBytes), TraceOptions.builder().setIsSampled(true).build());
tester.addEqualityGroup(TraceOptions.fromBytes(firstBytes));
tester.testEquals();
}
@Test
public void traceOptions_ToString() {
assertThat(TraceOptions.DEFAULT.toString()).contains("sampled=false");
assertThat(TraceOptions.builder().setIsSampled(true).build().toString())
.contains("sampled=true");
}
}
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