package com.google.instrumentation.trace;

import static com.google.common.truth.Truth.assertThat;

import org.junit.Test;

/** Unit tests for {@link TraceComponentImpl}. */
public class TraceComponentImplTest {
  @Test
  public void implementationOfTracer() {
    // TODO(bdrutu): Change this when TracerImpl is available.
    assertThat(Tracing.getTracer()).isSameAs(Tracer.getNoopTracer());
  }

  @Test
  public void implementationOfBinaryPropagationHandler() {
    assertThat(Tracing.getBinaryPropagationHandler())
        .isSameAs(BinaryPropagationHandlerImpl.INSTANCE);
  }
}

@@ -115,16 +115,82 @@
 it.Test;
+%0Aimport org.junit.runner.RunWith;%0Aimport org.junit.runners.JUnit4;
 %0A%0A/** Un
@@ -233,16 +233,39 @@
 pl%7D. */%0A
+@RunWith(JUnit4.class)%0A
 public c

Add a missing RunWith annotation. (#246)