forked from census-instrumentation/opencensus-java
/
ContextUtilsTest.java
49 lines (43 loc) · 1.53 KB
/
ContextUtilsTest.java
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/*
* Copyright 2019, 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.unsafe;
import static com.google.common.truth.Truth.assertThat;
import io.opencensus.trace.BlankSpan;
import io.opencensus.trace.Ctx;
import io.opencensus.trace.Span;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Unit tests for {@link ContextUtils}. */
@RunWith(JUnit4.class)
public class ContextUtilsTest {
@Test
public void testGetCurrentSpan_DefaultContext() {
Span span = CtxUtils.getValue(CtxUtils.currentContext());
assertThat(span).isEqualTo(BlankSpan.INSTANCE);
}
@Test
public void testGetCurrentSpan_ContextSetToNull() {
Ctx orig = CtxUtils.withValue(CtxUtils.currentContext(), null).attach();
try {
Span span = CtxUtils.getValue(CtxUtils.currentContext());
// ContextUtils.getValue always returns non-null.
assertThat(span).isEqualTo(BlankSpan.INSTANCE);
} finally {
CtxUtils.currentContext().detach(orig);
}
}
}