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()) 35 .isSameInstanceAs(Tracer.getNoopTracer()); 36 } 37 38 @Test defaultBinaryPropagationHandler()39 public void defaultBinaryPropagationHandler() { 40 assertThat(TraceComponent.newNoopTraceComponent().getPropagationComponent()) 41 .isSameInstanceAs(PropagationComponent.getNoopPropagationComponent()); 42 } 43 44 @Test defaultClock()45 public void defaultClock() { 46 assertThat(TraceComponent.newNoopTraceComponent().getClock()).isInstanceOf(ZeroTimeClock.class); 47 } 48 49 @Test defaultTraceExporter()50 public void defaultTraceExporter() { 51 assertThat(TraceComponent.newNoopTraceComponent().getExportComponent()) 52 .isInstanceOf(ExportComponent.newNoopExportComponent().getClass()); 53 } 54 55 @Test defaultTraceConfig()56 public void defaultTraceConfig() { 57 assertThat(TraceComponent.newNoopTraceComponent().getTraceConfig()) 58 .isSameInstanceAs(TraceConfig.getNoopTraceConfig()); 59 } 60 } 61