toRdf/0118-out.nq nquad blank node as predicate is not allowed

[mvanassche]

in https://w3c.github.io/json-ld-api/tests/toRdf/0118-out.nq _:b0 is used as a predicate in a triple.

According to https://www.w3.org/TR/n-quads/:

• predicate ::= IRIREF

[pchampin]

This test sets the produceGeneralizedRdf flag to true, it is supposed to produce Generalized RDF.

Granted, the output file is therefore not valid N-Quads, and there is no specification for "generalized N-Quads". From that perspective, this test-case is a bit dodgy. But it can easily be spotted as such (as it sets produceGeneralizedRdf to true) so it can (and should) be skipped by strict implementations (i.e. those not supporting generalized RDF).

[gkellogg]

The tests README could, perhaps, informally define the syntax for generalized N-Quads.