R4 FHIR Path resolve broken

[madduci]

Hello

I've bumped the Core Library in HAPI FHIR to the 6.5.13 with this PR: hapifhir/hapi-fhir#6769

A test case for R4 fails, when it comes to evaluate the presence of a reference.
The test case is as follows:

org/hl7/fhir/r4/utils/FhirPathEngineR4Test.java

       @Test
	public void testCrossResourceBoundaries() throws FHIRException {
		Specimen specimen = new Specimen();
		specimen.setReceivedTimeElement(new DateTimeType("2011-01-01"));

		Observation o = new Observation();
		o.setId("O1");
		o.setStatus(Observation.ObservationStatus.FINAL);
		o.setSpecimen(new Reference(specimen));

		IParser p = ourCtx.newJsonParser();
		o = (Observation) p.parseResource(p.encodeResourceToString(o));

		List<Base> value;

		value = ourCtx.newFhirPath().evaluate(o, "Observation.specimen", Base.class);
		assertThat(value).hasSize(1);
		value = ourCtx.newFhirPath().evaluate(o, "Observation.specimen.resolve()", Base.class);
		assertThat(value).hasSize(1);

		value = ourCtx.newFhirPath().evaluate(o, "Observation.specimen.resolve().receivedTime", Base.class);
		assertThat(value).hasSize(1);
		assertEquals("2011-01-01", ((DateTimeType) value.get(0)).getValueAsString());
	}

The assertion testing that Observation.speciment.resolve() has size 1 fails.

The evaluated JSON is

{"resourceType":"Observation","id":"O1","contained":[{"resourceType":"Specimen","id":"a2567398-191d-456b-8d78-112da93728f4","receivedTime":"2011-01-01"}],"status":"final","specimen":{"reference":"#a2567398-191d-456b-8d78-112da93728f4"}}

[madduci]

I've seen that the Parsing is whole handled in HAPI-FHIR Framework itself, i close the issue here