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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 static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import io.opencensus.common.Scope;
import java.util.concurrent.Callable;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
/** Unit tests for {@link SpanBuilder}. */
@RunWith(JUnit4.class)
// Need to suppress warnings for MustBeClosed because Java-6 does not support try-with-resources.
@SuppressWarnings("MustBeClosedChecker")
public class SpanBuilderTest {
private Tracer tracer = Tracing.getTracer();
@Mock private SpanBuilder spanBuilder;
@Mock private Span span;
@Before
public void setUp() {
MockitoAnnotations.initMocks(this);
when(spanBuilder.startSpan()).thenReturn(span);
}
@Test
public void startScopedSpan() {
assertThat(tracer.getCurrentSpan()).isSameAs(BlankSpan.INSTANCE);
Scope scope = spanBuilder.startScopedSpan();
try {
assertThat(tracer.getCurrentSpan()).isSameAs(span);
} finally {
scope.close();
}
verify(span).end(EndSpanOptions.DEFAULT);
assertThat(tracer.getCurrentSpan()).isSameAs(BlankSpan.INSTANCE);
}
@Test
public void startSpanAndRun() {
assertThat(tracer.getCurrentSpan()).isSameAs(BlankSpan.INSTANCE);
spanBuilder.startSpanAndRun(
new Runnable() {
@Override
public void run() {
assertThat(tracer.getCurrentSpan()).isSameAs(span);
}
});
verify(span).end(EndSpanOptions.DEFAULT);
assertThat(tracer.getCurrentSpan()).isSameAs(BlankSpan.INSTANCE);
}
@Test
public void startSpanAndCall() throws Exception {
final Object ret = new Object();
assertThat(tracer.getCurrentSpan()).isSameAs(BlankSpan.INSTANCE);
assertThat(
spanBuilder.startSpanAndCall(
new Callable<Object>() {
@Override
public Object call() throws Exception {
assertThat(tracer.getCurrentSpan()).isSameAs(span);
return ret;
}
}))
.isEqualTo(ret);
verify(span).end(EndSpanOptions.DEFAULT);
assertThat(tracer.getCurrentSpan()).isSameAs(BlankSpan.INSTANCE);
}
}
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