Github user afs commented on a diff in the pull request:
https://github.com/apache/jena/pull/211#discussion_r98633112
--- Diff:
jena-arq/src/test/java/org/apache/jena/riot/writer/TestJsonLDWriter.java ---
@@ -460,15 +468,77 @@ private Model simpleModel(String ns) {
// compactArrays is false -> an array for all props, even when
there's only one value
assertTrue(jsonld.indexOf("\"jobTitle\" : [ \"Professor\" ]") >
-1);
}
+
+ /**
+ * Test blanknodes.
+ *
+ * Several graphs, blanknodes with an id given by the user, or
generated by jena
+ */
+ @Test public final void blankNodesTest() throws IOException {
+ // create a dataset with one named graph, and some blanknodes
+
+ Dataset ds = null;
+ Model m = ModelFactory.createDefaultModel();
+ Model m2 = ModelFactory.createDefaultModel();
+ ds = DatasetFactory.create(m);
+ String namedModelName = "http://ex.com/namedgraph";;
+ ds.addNamedModel(namedModelName, m2);
+
+ Resource s = m.createResource();
+ m.add(s, RDFS.label, "blank node 1 in default graph");
+
+ s = m2.createResource();
+ m2.add(s, RDFS.label, "blank node 2 in named graph");
+
+ // blanknodes with given id, shared by the 2 graphs
+
+ s = m.createResource(AnonId.create("_:foo"));
+ m.add(s, RDFS.label, "_:foo in default graph");
+
+ s = m2.createResource(AnonId.create("_:foo"));
+ m2.add(s, RDFS.label, "_:foo in named graph");
+
+ s = m.createResource(AnonId.create("xxx"));
+ m.add(s, RDFS.label, "xxx in default");
+
+ s = m2.createResource(AnonId.create("xxx"));
+ m2.add(s, RDFS.label, "xxx in named");
+
+ // this id will probably be changed in output
+ s = m.createResource(AnonId.create("_:b0"));
+ m.add(s, RDFS.label, "? in default graph");
+
+ s = m2.createResource(AnonId.create("_:b0"));
+ m2.add(s, RDFS.label, "? in named graph");
+
+ // write to jsonld
+
+ String jsonld = dataset2jsonld(ds.asDatasetGraph(),
RDFFormat.JSONLD, null);
+ System.out.println(jsonld);
+
+ // check we have kept the blanknodes identifiers that were valid
jsonld bn identifiers
+ assertTrue(jsonld.indexOf("\"_:foo\"") > -1);
--- End diff --
` if ( jsonld.contains("\"_:foo\"") )`
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