OpenTracingTracer { public static void init() { doInit(); }  static void init(); static void init(final Tracer tracer); static Tracer get(); static final String OPENTRACING_TRACER_CLASS_NAME; }
@Test(expected = ShardingSphereException.class) public void assertTracerClassError() { System.setProperty(OpenTracingTracer.OPENTRACING_TRACER_CLASS_NAME, "com.foo.FooTracer"); OpenTracingTracer.init(); }