### Question:
TracingContextUtils { public static Span getSpan(Context context) { Span span = context.getValue(CONTEXT_SPAN_KEY); return span == null ? DefaultSpan.getInvalid() : span; } private  TracingContextUtils(); static Context withSpan(Span span, Context context); static Span getCurrentSpan(); static Span getSpan(Context context); @Nullable static Span getSpanWithoutDefault(Context context); static Scope currentContextWith(Span span);  }### Answer:
@Test void testGetSpan_DefaultContext() { Span span = TracingContextUtils.getSpan(Context.current()); assertThat(span).isSameAs(DefaultSpan.getInvalid()); }