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|
# -*- coding: UTF-8 -*-
from rdflib import ConjunctiveGraph, Dataset, Graph, URIRef
data = """
{
"@context": {"@vocab": "http://schema.org/"},
"@graph": [
{ "@id": "http://example.org/data#jdoe",
"name": "John"
},
{ "@id": "http://example.org/data#janedoe",
"name": "Jane"
},
{ "@id": "http://example.org/data#metadata",
"@graph": [
{ "@id": "http://example.org/data",
"creator": "http://example.org/data#janedoe"
}
]
}
]
}
"""
meta_ctx = URIRef("http://example.org/data#metadata")
def test_graph():
g = Graph()
g.parse(data=data, format="application/ld+json")
assert len(g) == 2
def test_conjunctive_graph():
cg = ConjunctiveGraph()
cg.default_context.parse(data=data, format="application/ld+json")
assert len(cg) == 3
print(
"default graph (%s) contains %s triples (expected 2)"
% (cg.identifier, len(cg.default_context))
)
for ctx in cg.contexts():
print("named graph (%s) contains %s triples" % (ctx.identifier, len(ctx)))
assert len(cg.default_context) == 2
assert len(list(cg.contexts())) == 2
def test_dataset():
ds = Dataset()
ds.default_context.parse(data=data, format="application/ld+json")
assert len(ds) == 3
assert len(ds.default_context) == 2
print(
"default graph (%s) contains %s triples (expected 2)"
% (ds.identifier, len(ds.default_context))
)
contexts = dict((ctx.identifier, ctx) for ctx in ds.contexts())
assert len(contexts) == 2
assert len(contexts.pop(meta_ctx)) == 1
assert len(list(contexts.values())[0]) == 2
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