rdf-ex/test/unit/turtle_decoder_test.exs

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defmodule RDF.Turtle.DecoderTest do
use ExUnit.Case, async: false
doctest RDF.Turtle.Decoder
import RDF.Sigils
alias RDF.{Turtle, Graph}
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alias RDF.NS.{XSD}
use RDF.Vocabulary.Namespace
defvocab EX,
base_iri: "http://example.org/#",
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terms: [], strict: false
defvocab P,
base_iri: "http://www.perceive.net/schemas/relationship/",
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terms: [], strict: false
test "an empty string is deserialized to an empty graph" do
assert Turtle.Decoder.decode!("") == Graph.new
assert Turtle.Decoder.decode!(" \n\r\r\n ") == Graph.new
end
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test "comments" do
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assert Turtle.Decoder.decode!("# just a comment") == Graph.new
assert Turtle.Decoder.decode!("""
<http://example.org/#S> <http://example.org/#p> _:1 . # a comment
""") == Graph.new({EX.S, EX.p, RDF.bnode("1")})
assert Turtle.Decoder.decode!("""
# a comment
<http://example.org/#S> <http://example.org/#p> <http://example.org/#O> .
""") == Graph.new({EX.S, EX.p, EX.O})
assert Turtle.Decoder.decode!("""
<http://example.org/#S> <http://example.org/#p> <http://example.org/#O> .
# a comment
""") == Graph.new({EX.S, EX.p, EX.O})
assert Turtle.Decoder.decode!("""
# Header line 1
# Header line 2
<http://example.org/#S1> <http://example.org/#p1> <http://example.org/#O1> .
# 1st comment
<http://example.org/#S1> <http://example.org/#p2> <http://example.org/#O2> . # 2nd comment
# last comment
""") == Graph.new([
{EX.S1, EX.p1, EX.O1},
{EX.S1, EX.p2, EX.O2},
])
end
test "empty lines" do
assert Turtle.Decoder.decode!("""
<http://example.org/#spiderman> <http://www.perceive.net/schemas/relationship/enemyOf> <http://example.org/#green_goblin> .
""") == Graph.new({EX.spiderman, P.enemyOf, EX.green_goblin})
assert Turtle.Decoder.decode!("""
<http://example.org/#spiderman> <http://www.perceive.net/schemas/relationship/enemyOf> <http://example.org/#green_goblin> .
""") == Graph.new({EX.spiderman, P.enemyOf, EX.green_goblin})
assert Turtle.Decoder.decode!("""
<http://example.org/#S1> <http://example.org/#p1> <http://example.org/#O1> .
<http://example.org/#S1> <http://example.org/#p2> <http://example.org/#O2> .
""") == Graph.new([
{EX.S1, EX.p1, EX.O1},
{EX.S1, EX.p2, EX.O2},
])
end
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describe "statements" do
test "a N-Triple-style statement" do
assert Turtle.Decoder.decode!(
"<http://example.org/#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.org/#Person> ."
) == Graph.new({EX.Aaron, RDF.type, EX.Person})
end
test "a statement with the 'a' keyword" do
assert Turtle.Decoder.decode!("""
<http://example.org/#Aaron> a <http://example.org/#Person> .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
end
test "multiple N-Triple-style statement" do
assert Turtle.Decoder.decode!("""
<http://example.org/#S1> <http://example.org/#p1> <http://example.org/#O1> .
<http://example.org/#S1> <http://example.org/#p2> <http://example.org/#O2> .
""") == Graph.new([
{EX.S1, EX.p1, EX.O1},
{EX.S1, EX.p2, EX.O2},
])
assert Turtle.Decoder.decode!("""
<http://example.org/#S1> <http://example.org/#p1> <http://example.org/#O1> .
<http://example.org/#S1> <http://example.org/#p2> <http://example.org/#O2> .
<http://example.org/#S2> <http://example.org/#p3> <http://example.org/#O3> .
""") == Graph.new([
{EX.S1, EX.p1, EX.O1},
{EX.S1, EX.p2, EX.O2},
{EX.S2, EX.p3, EX.O3}
])
end
test "statement with multiple objects" do
assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> "baz", 1, true .
""") == Graph.new([
{EX.Foo, EX.bar, "baz"},
{EX.Foo, EX.bar, 1},
{EX.Foo, EX.bar, true},
])
end
test "statement with multiple predications" do
assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> "baz";
<http://example.org/#baz> 42 .
""") == Graph.new([
{EX.Foo, EX.bar, "baz"},
{EX.Foo, EX.baz, 42},
])
end
end
describe "blank node property lists" do
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test "blank node property list on object position" do
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assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> [ <http://example.org/#baz> 42 ] .
""") == Graph.new([
{EX.Foo, EX.bar, RDF.bnode("b0")},
{RDF.bnode("b0"), EX.baz, 42},
])
end
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test "blank node property list on subject position" do
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assert Turtle.Decoder.decode!("""
[ <http://example.org/#baz> 42 ] <http://example.org/#bar> false .
""") == Graph.new([
{RDF.bnode("b0"), EX.baz, 42},
{RDF.bnode("b0"), EX.bar, false},
])
end
test "a single blank node property list" do
assert Turtle.Decoder.decode!("[ <http://example.org/#foo> 42 ] .") ==
Graph.new([{RDF.bnode("b0"), EX.foo, 42}])
end
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test "nested blank node property list" do
assert Turtle.Decoder.decode!("""
[ <http://example.org/#p1> [ <http://example.org/#p2> <http://example.org/#o2> ] ; <http://example.org/#p> <http://example.org/#o> ].
""") == Graph.new([
{RDF.bnode("b0"), EX.p1, RDF.bnode("b1")},
{RDF.bnode("b1"), EX.p2, EX.o2},
{RDF.bnode("b0"), EX.p, EX.o},
])
end
test "blank node via []" do
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assert Turtle.Decoder.decode!("""
[] <http://xmlns.com/foaf/0.1/name> "Aaron Swartz" .
""") == Graph.new({RDF.bnode("b0"), ~I<http://xmlns.com/foaf/0.1/name>, "Aaron Swartz"})
assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> [] .
""") == Graph.new({EX.Foo, EX.bar, RDF.bnode("b0")})
assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> [ ] .
""") == Graph.new({EX.Foo, EX.bar, RDF.bnode("b0")})
end
end
test "blank node" do
assert Turtle.Decoder.decode!("""
_:foo <http://example.org/#p> <http://example.org/#O> .
""") == Graph.new({RDF.bnode("foo"), EX.p, EX.O})
assert Turtle.Decoder.decode!("""
<http://example.org/#S> <http://example.org/#p> _:1 .
""") == Graph.new({EX.S, EX.p, RDF.bnode("1")})
assert Turtle.Decoder.decode!("""
_:foo <http://example.org/#p> _:bar .
""") == Graph.new({RDF.bnode("foo"), EX.p, RDF.bnode("bar")})
end
describe "quoted literals" do
test "an untyped string literal" do
assert Turtle.Decoder.decode!("""
<http://example.org/#spiderman> <http://www.perceive.net/schemas/relationship/realname> "Peter Parker" .
""") == Graph.new({EX.spiderman, P.realname, RDF.literal("Peter Parker")})
end
test "an untyped long quoted string literal" do
assert Turtle.Decoder.decode!("""
<http://example.org/#spiderman> <http://www.perceive.net/schemas/relationship/realname> '''Peter Parker''' .
""") == Graph.new({EX.spiderman, P.realname, RDF.literal("Peter Parker")})
end
test "a typed literal" do
assert Turtle.Decoder.decode!("""
<http://example.org/#spiderman> <http://example.org/#p> "42"^^<http://www.w3.org/2001/XMLSchema#integer> .
""") == Graph.new({EX.spiderman, EX.p, RDF.literal(42)})
end
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test "a typed literal with type as a prefixed name" do
assert Turtle.Decoder.decode!("""
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
<http://example.org/#spiderman> <http://example.org/#p> "42"^^xsd:integer .
""") == Graph.new({EX.spiderman, EX.p, RDF.literal(42)})
end
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test "a language tagged literal" do
assert Turtle.Decoder.decode!("""
<http://example.org/#S> <http://example.org/#p> "foo"@en .
""") == Graph.new({EX.S, EX.p, RDF.literal("foo", language: "en")})
end
test "a '@prefix' or '@base' language tagged literal" do
assert Turtle.Decoder.decode!("""
<http://example.org/#S> <http://example.org/#p> "foo"@prefix .
""") == Graph.new({EX.S, EX.p, RDF.literal("foo", language: "prefix")})
assert Turtle.Decoder.decode!("""
<http://example.org/#S> <http://example.org/#p> "foo"@base .
""") == Graph.new({EX.S, EX.p, RDF.literal("foo", language: "base")})
end
end
describe "shorthand literals" do
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test "boolean" do
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assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> true .
""") == Graph.new({EX.Foo, EX.bar, RDF.Boolean.new(true)})
assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> false .
""") == Graph.new({EX.Foo, EX.bar, RDF.Boolean.new(false)})
end
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test "integer" do
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assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> 42 .
""") == Graph.new({EX.Foo, EX.bar, RDF.Integer.new(42)})
end
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test "decimal" do
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assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> 3.14 .
""") == Graph.new({EX.Foo, EX.bar, RDF.Literal.new("3.14", datatype: XSD.decimal)})
end
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test "double" do
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assert Turtle.Decoder.decode!("""
<http://example.org/#Foo> <http://example.org/#bar> 1.2e3 .
""") == Graph.new({EX.Foo, EX.bar, RDF.Double.new("1.2e3")})
end
end
describe "prefixed names" do
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test "non-empty prefixed names" do
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assert Turtle.Decoder.decode!("""
@prefix ex: <http://example.org/#> .
ex:Aaron <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ex:Person .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
assert Turtle.Decoder.decode!("""
@prefix ex: <http://example.org/#> .
ex:Aaron <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ex:Person .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
assert Turtle.Decoder.decode!("""
PREFIX ex: <http://example.org/#>
ex:Aaron <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ex:Person .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
assert Turtle.Decoder.decode!("""
prefix ex: <http://example.org/#>
ex:Aaron <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> ex:Person .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
end
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test "empty prefixed name" do
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assert Turtle.Decoder.decode!("""
@prefix : <http://example.org/#> .
:Aaron <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> :Person .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
assert Turtle.Decoder.decode!("""
PREFIX : <http://example.org/#>
:Aaron <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> :Person .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
end
end
describe "collections" do
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test "non-empty collection" do
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assert Turtle.Decoder.decode!("""
@prefix : <http://example.org/#> .
:subject :predicate ( :a :b :c ) .
""") == Graph.new([
{EX.subject, EX.predicate, RDF.bnode("b0")},
{RDF.bnode("b0"), RDF.first, EX.a},
{RDF.bnode("b0"), RDF.rest, RDF.bnode("b1")},
{RDF.bnode("b1"), RDF.first, EX.b},
{RDF.bnode("b1"), RDF.rest, RDF.bnode("b2")},
{RDF.bnode("b2"), RDF.first, EX.c},
{RDF.bnode("b2"), RDF.rest, RDF.nil},
])
end
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test "empty collection" do
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assert Turtle.Decoder.decode!("""
@prefix : <http://example.org/#> .
:subject :predicate () .
""") == Graph.new({EX.subject, EX.predicate, RDF.nil})
end
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test "nested collection" do
assert Turtle.Decoder.decode!("""
@prefix : <http://example.org/#> .
:subject :predicate ( :a (:b :c) ) .
""") == Graph.new([
{EX.subject, EX.predicate, RDF.bnode("b0")},
{RDF.bnode("b0"), RDF.first, EX.a},
{RDF.bnode("b0"), RDF.rest, RDF.bnode("b3")},
{RDF.bnode("b3"), RDF.first, RDF.bnode("b1")},
{RDF.bnode("b3"), RDF.rest, RDF.nil},
{RDF.bnode("b1"), RDF.first, EX.b},
{RDF.bnode("b1"), RDF.rest, RDF.bnode("b2")},
{RDF.bnode("b2"), RDF.first, EX.c},
{RDF.bnode("b2"), RDF.rest, RDF.nil},
])
end
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end
describe "relative IRIs" do
test "without explicit in-doc base and no document_base option option given" do
assert_raise RuntimeError, fn ->
Turtle.Decoder.decode!(
"<#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <#Person> .")
end
end
test "without explicit in-doc base, but document_base option given" do
assert Turtle.Decoder.decode!("""
<#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <#Person> .
""", base: "http://example.org/") == Graph.new({EX.Aaron, RDF.type, EX.Person})
end
test "with @base given" do
assert Turtle.Decoder.decode!("""
@base <http://example.org/> .
<#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <#Person> .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
assert Turtle.Decoder.decode!("""
@base <http://example.org/#> .
<#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <#Person> .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
end
test "with BASE given" do
assert Turtle.Decoder.decode!("""
BASE <http://example.org/>
<#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <#Person> .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
assert Turtle.Decoder.decode!("""
base <http://example.org/#>
<#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <#Person> .
""") == Graph.new({EX.Aaron, RDF.type, EX.Person})
end
test "when a given base is itself relative" do
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assert_raise RuntimeError, fn ->
Turtle.Decoder.decode!("""
@base <foo> .
<#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <#Person> .
""")
end
assert_raise RuntimeError, fn ->
Turtle.Decoder.decode!(
"<#Aaron> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <#Person> .",
base: "foo")
end
end
end
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end