1 /* 2 * Copyright 2017, OpenCensus Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package io.opencensus.trace; 18 19 import static com.google.common.truth.Truth.assertThat; 20 21 import io.opencensus.internal.ZeroTimeClock; 22 import io.opencensus.trace.config.TraceConfig; 23 import io.opencensus.trace.export.ExportComponent; 24 import io.opencensus.trace.propagation.PropagationComponent; 25 import org.junit.Test; 26 import org.junit.runner.RunWith; 27 import org.junit.runners.JUnit4; 28 29 /** Unit tests for {@link TraceComponent}. */ 30 @RunWith(JUnit4.class) 31 public class TraceComponentTest { 32 @Test defaultTracer()33 public void defaultTracer() { 34 assertThat(TraceComponent.newNoopTraceComponent().getTracer()).isSameAs(Tracer.getNoopTracer()); 35 } 36 37 @Test defaultBinaryPropagationHandler()38 public void defaultBinaryPropagationHandler() { 39 assertThat(TraceComponent.newNoopTraceComponent().getPropagationComponent()) 40 .isSameAs(PropagationComponent.getNoopPropagationComponent()); 41 } 42 43 @Test defaultClock()44 public void defaultClock() { 45 assertThat(TraceComponent.newNoopTraceComponent().getClock()).isInstanceOf(ZeroTimeClock.class); 46 } 47 48 @Test defaultTraceExporter()49 public void defaultTraceExporter() { 50 assertThat(TraceComponent.newNoopTraceComponent().getExportComponent()) 51 .isInstanceOf(ExportComponent.newNoopExportComponent().getClass()); 52 } 53 54 @Test defaultTraceConfig()55 public void defaultTraceConfig() { 56 assertThat(TraceComponent.newNoopTraceComponent().getTraceConfig()) 57 .isSameAs(TraceConfig.getNoopTraceConfig()); 58 } 59 } 60