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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.implcore.tags.propagation;
import static com.google.common.truth.Truth.assertThat;
import com.google.common.collect.ImmutableSet;
import io.opencensus.implcore.tags.TagsComponentImplBase;
import io.opencensus.implcore.tags.TagsTestUtil;
import io.opencensus.tags.Tag;
import io.opencensus.tags.TagContext;
import io.opencensus.tags.TagKey;
import io.opencensus.tags.TagValue;
import io.opencensus.tags.TaggingState;
import io.opencensus.tags.TagsComponent;
import io.opencensus.tags.propagation.TagContextBinarySerializer;
import io.opencensus.tags.propagation.TagContextDeserializationException;
import io.opencensus.tags.propagation.TagContextSerializationException;
import java.util.Iterator;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Tests for {@link TagContextBinarySerializerImpl}.
*
* <p>Thorough serialization/deserialization tests are in {@link TagContextSerializationTest},
* {@link TagContextDeserializationTest}, and {@link TagContextRoundtripTest}.
*/
@RunWith(JUnit4.class)
public final class TagContextBinarySerializerImplTest {
private final TagsComponent tagsComponent = new TagsComponentImplBase();
private final TagContextBinarySerializer serializer =
tagsComponent.getTagPropagationComponent().getBinarySerializer();
private final TagContext tagContext =
new TagContext() {
@Override
public Iterator<Tag> getIterator() {
return ImmutableSet.<Tag>of(Tag.create(TagKey.create("key"), TagValue.create("value")))
.iterator();
}
};
@Test
public void toByteArray_TaggingDisabled() throws TagContextSerializationException {
tagsComponent.setState(TaggingState.DISABLED);
assertThat(serializer.toByteArray(tagContext)).isEmpty();
}
@Test
public void toByteArray_TaggingReenabled() throws TagContextSerializationException {
final byte[] serialized = serializer.toByteArray(tagContext);
tagsComponent.setState(TaggingState.DISABLED);
assertThat(serializer.toByteArray(tagContext)).isEmpty();
tagsComponent.setState(TaggingState.ENABLED);
assertThat(serializer.toByteArray(tagContext)).isEqualTo(serialized);
}
@Test
public void fromByteArray_TaggingDisabled()
throws TagContextDeserializationException, TagContextSerializationException {
byte[] serialized = serializer.toByteArray(tagContext);
tagsComponent.setState(TaggingState.DISABLED);
assertThat(TagsTestUtil.tagContextToList(serializer.fromByteArray(serialized))).isEmpty();
}
@Test
public void fromByteArray_TaggingReenabled()
throws TagContextDeserializationException, TagContextSerializationException {
byte[] serialized = serializer.toByteArray(tagContext);
tagsComponent.setState(TaggingState.DISABLED);
assertThat(TagsTestUtil.tagContextToList(serializer.fromByteArray(serialized))).isEmpty();
tagsComponent.setState(TaggingState.ENABLED);
assertThat(serializer.fromByteArray(serialized)).isEqualTo(tagContext);
}
}
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