### Question:
ZipkinRequestUUIDImpl implements ZipkinRequestUUID { @Override public boolean isZipkinTracingReady() { return zipkinData != null; } ZipkinRequestUUIDImpl(@Nonnull RequestUUID cougarUuid);  ZipkinRequestUUIDImpl(@Nonnull RequestUUID cougarUuid, @Nullable ZipkinDataBuilder zipkinDataBuilder); @Override String getRootUUIDComponent(); @Override String getParentUUIDComponent(); @Override String getLocalUUIDComponent(); @Override @Nonnull RequestUUID getNewSubUUID(); @Override @Nonnull ZipkinData getZipkinData(); @Override boolean isZipkinTracingEnabled(); @Override boolean isZipkinTracingReady(); @Override ZipkinData buildZipkinData(@Nonnull String spanName); @Override String getUUID(); @Override String toCougarLogString(); @Override String toString();  }### Answer:
@Test public void isZipkinTracingReady_WhenZipkinDataHasNotBeenBuilt_ShouldReturnFalse() { victim = new ZipkinRequestUUIDImpl(cougarUuid, zipkinDataBuilder); assertFalse(victim.isZipkinTracingReady()); }