rdf-ex/test/unit/ntriples_encoder_test.exs

114 lines
3.8 KiB
Elixir

defmodule RDF.NTriples.EncoderTest do
use ExUnit.Case, async: false
alias RDF.NTriples
doctest NTriples.Encoder
alias RDF.Graph
alias RDF.NS.XSD
import RDF.Sigils
import RDF.Test.Case, only: [stream_to_string: 1]
use RDF.Vocabulary.Namespace
defvocab EX, base_iri: "http://example.org/#", terms: [], strict: false
test "stream_support?/0" do
assert NTriples.Encoder.stream_support?()
end
describe "serializing a graph" do
test "an empty graph is serialized to an empty string" do
assert NTriples.Encoder.encode!(Graph.new()) == ""
end
test "statements with IRIs only" do
assert NTriples.Encoder.encode!(
Graph.new([
{EX.S1, EX.p1(), EX.O1},
{EX.S1, EX.p1(), EX.O2},
{EX.S1, EX.p2(), EX.O3},
{EX.S2, EX.p3(), EX.O4}
])
) ==
"""
<http://example.org/#S1> <http://example.org/#p1> <http://example.org/#O1> .
<http://example.org/#S1> <http://example.org/#p1> <http://example.org/#O2> .
<http://example.org/#S1> <http://example.org/#p2> <http://example.org/#O3> .
<http://example.org/#S2> <http://example.org/#p3> <http://example.org/#O4> .
"""
end
test "statements with literals" do
assert NTriples.Encoder.encode!(
Graph.new([
{EX.S1, EX.p1(), ~L"foo"},
{EX.S1, EX.p1(), ~L"foo"en},
{EX.S1, EX.p2(), 42},
{EX.S2, EX.p3(), RDF.literal("strange things", datatype: EX.custom())}
])
) ==
"""
<http://example.org/#S1> <http://example.org/#p1> "foo"@en .
<http://example.org/#S1> <http://example.org/#p1> "foo" .
<http://example.org/#S1> <http://example.org/#p2> "42"^^<#{XSD.integer()}> .
<http://example.org/#S2> <http://example.org/#p3> "strange things"^^<#{EX.custom()}> .
"""
end
test "statements with blank nodes" do
assert NTriples.Encoder.encode!(
Graph.new([
{EX.S1, EX.p1(), RDF.bnode(1)},
{EX.S1, EX.p1(), RDF.bnode("foo")},
{EX.S1, EX.p1(), RDF.bnode(:bar)}
])
) ==
"""
<http://example.org/#S1> <http://example.org/#p1> _:b1 .
<http://example.org/#S1> <http://example.org/#p1> _:bar .
<http://example.org/#S1> <http://example.org/#p1> _:foo .
"""
end
test "string escaping" do
assert NTriples.Encoder.encode!(
Graph.new([
{EX.S, EX.p(), ~s["foo"\n\r"bar"]},
{EX.S, EX.p(), RDF.literal(~s["foo"\n\r"bar"], language: "en")}
])
) ==
"""
<http://example.org/#S> <http://example.org/#p> "\\"foo\\"\\n\\r\\"bar\\""@en .
<http://example.org/#S> <http://example.org/#p> "\\"foo\\"\\n\\r\\"bar\\"" .
"""
end
end
describe "stream/2" do
graph =
Graph.new([
{EX.S1, EX.p1(), EX.O1},
{EX.S2, EX.p2(), RDF.bnode("foo")},
{EX.S3, EX.p3(), ~L"foo"},
{EX.S3, EX.p3(), ~L"foo"en}
])
expected_result = """
<http://example.org/#S1> <http://example.org/#p1> <http://example.org/#O1> .
<http://example.org/#S2> <http://example.org/#p2> _:foo .
<http://example.org/#S3> <http://example.org/#p3> "foo"@en .
<http://example.org/#S3> <http://example.org/#p3> "foo" .
"""
assert NTriples.Encoder.stream(graph, mode: :string)
|> stream_to_string() ==
expected_result
assert NTriples.Encoder.stream(graph, mode: :iodata)
|> stream_to_string() ==
expected_result
end
end