public void OriginHeader_InjectFromChildSpan()
{
var traceId = TraceId.CreateFromInt(9);
const ulong spanId = 7;
const SamplingPriority samplingPriority = SamplingPriority.UserKeep;
const string origin = "synthetics";
var propagatedContext = new SpanContext(traceId, spanId, samplingPriority, null, origin);
var propagator = new DDSpanContextPropagator(new DatadogTraceIdConvention());
using var firstSpan = _tracer.StartActive("First Span", propagatedContext);
using var secondSpan = _tracer.StartActive("Child", firstSpan.Span.Context);
IHeadersCollection headers = WebRequest.CreateHttp("http://localhost").Headers.Wrap();
propagator.Inject(secondSpan.Span.Context, headers);
var resultContext = propagator.Extract(headers);
Assert.NotNull(resultContext);
Assert.Equal(firstSpan.Span.Context.Origin, resultContext.Origin);
Assert.Equal(secondSpan.Span.Context.Origin, resultContext.Origin);
Assert.Equal(origin, resultContext.Origin);
}
