How to use

getSubspanSpanName

method

in

com.nike.wingtips.spring.interceptor.WingtipsAsyncClientHttpRequestInterceptor

@DataProvider(value = {
  "spanNameFromStrategy   |   PATCH           |   spanNameFromStrategy",
  "null                   |   PATCH           |   asyncresttemplate_downstream_call-PATCH",
  "                       |   PATCH           |   asyncresttemplate_downstream_call-PATCH",
  "[whitespace]           |   PATCH           |   asyncresttemplate_downstream_call-PATCH",
  "null                   |   null            |   asyncresttemplate_downstream_call-UNKNOWN_HTTP_METHOD",
}, splitBy = "\\|")
@Test
public void getSubspanSpanName_works_as_expected(
  String strategyResult, HttpMethod httpMethod, String expectedResult
) {
  // given
  if ("[whitespace]".equals(strategyResult)) {
    strategyResult = "  \n\r\t  ";
  }
  initialSpanNameFromStrategy.set(strategyResult);
  doReturn(httpMethod).when(requestMock).getMethod();
  WingtipsAsyncClientHttpRequestInterceptor interceptor = new WingtipsAsyncClientHttpRequestInterceptor(
    true, tagAndNamingStrategy, tagAndNamingAdapterMock
  );
  // when
  String result = interceptor.getSubspanSpanName(requestMock, tagAndNamingStrategy, tagAndNamingAdapterMock);
  // then
  assertThat(result).isEqualTo(expectedResult);
}

@Test
public void createAsyncSubSpanAndExecute_trigger_null_subspanFinisher_in_catch_block_branch_for_code_coverage() {
  // given
  Tracer.getInstance().startRequestWithRootSpan("someRootSpan");
  TracingState tracingStateBeforeInterceptorCall = TracingState.getCurrentThreadTracingState();
  WingtipsAsyncClientHttpRequestInterceptor interceptorSpy = spy(new WingtipsAsyncClientHttpRequestInterceptor(
    true, tagAndNamingStrategy, tagAndNamingAdapterMock
  ));
  RuntimeException explodingSubspanNameMethodEx =
    new RuntimeException("Intentional exception thrown by getSubspanSpanName()");
  doThrow(explodingSubspanNameMethodEx).when(interceptorSpy).getSubspanSpanName(
    any(HttpRequest.class), any(HttpTagAndSpanNamingStrategy.class), any(HttpTagAndSpanNamingAdapter.class)
  );
  HttpRequestWrapperWithModifiableHeaders wrapperRequest =
    new HttpRequestWrapperWithModifiableHeaders(requestMock);
  byte[] body = new byte[]{42};
  // when
  Throwable ex = catchThrowable(
    () -> interceptorSpy.createAsyncSubSpanAndExecute(wrapperRequest, body, executionMock)
  );
  // then
  assertThat(ex).isSameAs(explodingSubspanNameMethodEx);
  verify(interceptorSpy).getSubspanSpanName(wrapperRequest, tagAndNamingStrategy, tagAndNamingAdapterMock);
  // TracingState should have been reset even though an exception occurred in some unexpected place.
  assertThat(normalizeTracingState(TracingState.getCurrentThreadTracingState()))
    .isEqualTo(normalizeTracingState(tracingStateBeforeInterceptorCall));
}

  getSubspanSpanName(wrapperRequest, tagAndNamingStrategy, tagAndNamingAdapter),
  Span.SpanPurpose.CLIENT
);

  getSubspanSpanName(wrapperRequest, tagAndNamingStrategy, tagAndNamingAdapter),
  Span.SpanPurpose.CLIENT
);