| /* |
| * 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 io.opencensus.trace.Span.Kind; |
| import io.opencensus.trace.samplers.Samplers; |
| import java.util.Collections; |
| 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 final 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); |
| } |
| |
| @Test |
| public void doNotCrash_NoopImplementation() throws Exception { |
| SpanBuilder spanBuilder = tracer.spanBuilder("MySpanName"); |
| spanBuilder.setParentLinks(Collections.<Span>emptyList()); |
| spanBuilder.setRecordEvents(true); |
| spanBuilder.setSampler(Samplers.alwaysSample()); |
| spanBuilder.setSpanKind(Kind.SERVER); |
| assertThat(spanBuilder.startSpan()).isSameAs(BlankSpan.INSTANCE); |
| } |
| } |