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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;
import static com.google.common.truth.Truth.assertThat;
import static io.opencensus.implcore.tags.TagsTestUtil.tagContextToList;
import io.opencensus.common.Scope;
import io.opencensus.implcore.internal.CurrentState;
import io.opencensus.implcore.internal.CurrentState.State;
import io.opencensus.tags.Tag;
import io.opencensus.tags.TagContext;
import io.opencensus.tags.TagKey;
import io.opencensus.tags.TagValue;
import io.opencensus.tags.Tagger;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/**
* Unit tests for the methods in {@link TaggerImpl} and {@link TagContextBuilderImpl} that interact
* with the current {@link TagContext}.
*/
@RunWith(JUnit4.class)
public class ScopedTagContextsTest {
private static final TagKey KEY_1 = TagKey.create("key 1");
private static final TagKey KEY_2 = TagKey.create("key 2");
private static final TagValue VALUE_1 = TagValue.create("value 1");
private static final TagValue VALUE_2 = TagValue.create("value 2");
private final Tagger tagger = new TaggerImpl(new CurrentState(State.ENABLED));
@Test
public void defaultTagContext() {
TagContext defaultTagContext = tagger.getCurrentTagContext();
assertThat(tagContextToList(defaultTagContext)).isEmpty();
assertThat(defaultTagContext).isInstanceOf(TagContextImpl.class);
}
@Test
public void withTagContext() {
assertThat(tagContextToList(tagger.getCurrentTagContext())).isEmpty();
TagContext scopedTags = tagger.emptyBuilder().put(KEY_1, VALUE_1).build();
Scope scope = tagger.withTagContext(scopedTags);
try {
assertThat(tagger.getCurrentTagContext()).isSameAs(scopedTags);
} finally {
scope.close();
}
assertThat(tagContextToList(tagger.getCurrentTagContext())).isEmpty();
}
@Test
public void createBuilderFromCurrentTags() {
TagContext scopedTags = tagger.emptyBuilder().put(KEY_1, VALUE_1).build();
Scope scope = tagger.withTagContext(scopedTags);
try {
TagContext newTags = tagger.currentBuilder().put(KEY_2, VALUE_2).build();
assertThat(tagContextToList(newTags))
.containsExactly(Tag.create(KEY_1, VALUE_1), Tag.create(KEY_2, VALUE_2));
assertThat(tagger.getCurrentTagContext()).isSameAs(scopedTags);
} finally {
scope.close();
}
}
@Test
public void setCurrentTagsWithBuilder() {
assertThat(tagContextToList(tagger.getCurrentTagContext())).isEmpty();
Scope scope = tagger.emptyBuilder().put(KEY_1, VALUE_1).buildScoped();
try {
assertThat(tagContextToList(tagger.getCurrentTagContext()))
.containsExactly(Tag.create(KEY_1, VALUE_1));
} finally {
scope.close();
}
assertThat(tagContextToList(tagger.getCurrentTagContext())).isEmpty();
}
@Test
public void addToCurrentTagsWithBuilder() {
TagContext scopedTags = tagger.emptyBuilder().put(KEY_1, VALUE_1).build();
Scope scope1 = tagger.withTagContext(scopedTags);
try {
Scope scope2 = tagger.currentBuilder().put(KEY_2, VALUE_2).buildScoped();
try {
assertThat(tagContextToList(tagger.getCurrentTagContext()))
.containsExactly(Tag.create(KEY_1, VALUE_1), Tag.create(KEY_2, VALUE_2));
} finally {
scope2.close();
}
assertThat(tagger.getCurrentTagContext()).isSameAs(scopedTags);
} finally {
scope1.close();
}
}
}
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