Add test for issue 248, GCraph.serialize() + base kwarg

test/test_issue248.py

@@ -0,0 +1,130 @@
+import rdflib
+from nose.exc import SkipTest
+import unittest
+
+
+class TestSerialization(unittest.TestCase):
+
+    def test_issue_248(self):
+        """
+        Ed Summers Thu, 24 May 2007 12:21:17 -0700
+
+        As discussed with eikeon in #redfoot it appears that the n3 serializer
+        is ignoring the base option to Graph.serialize...example follows:
+
+        --
+
+        #!/usr/bin/env python
+
+        from rdflib.Graph import Graph
+        from rdflib.URIRef import URIRef
+        from rdflib import Literal, Namespace, RDF
+
+        graph = Graph()
+        DC = Namespace('http://purl.org/dc/terms/')
+        SKOS = Namespace('http://www.w3.org/2004/02/skos/core#')
+        LCCO = Namespace('http://loc.gov/catdir/cpso/lcco/')
+
+        graph.bind('dc', DC)
+        graph.bind('skos', SKOS)
+        graph.bind('lcco', LCCO)
+
+        concept = URIRef(LCCO['1'])
+        graph.add((concept, RDF.type, SKOS['Concept']))
+        graph.add((concept, SKOS['prefLabel'], Literal('Scrapbooks')))
+        graph.add((concept, DC['LCC'], Literal('AC999.0999 - AC999999.Z9999')))
+
+        print graph.serialize(format='n3', base=LCCO)
+
+        --
+
+        Which generates:
+
+        --
+
+        @prefix dc: <http://purl.org/dc/terms/>.
+        @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
+        @prefix skos: <http://www.w3.org/2004/02/skos/core#>.
+
+         <http://loc.gov/catdir/cpso/lcco/1> a skos:Concept;
+            dc:LCC "AC999.0999 - AC999999.Z9999";
+            skos:prefLabel "Scrapbooks".
+
+        --
+
+        Notice
+
+         <http://loc.gov/catdir/cpso/lcco/1> a skos:Concept;
+
+        instead of:
+
+         <1> a skos:Concept;
+
+        //Ed
+
+        """
+        graph = rdflib.Graph()
+        DC = rdflib.Namespace('http://purl.org/dc/terms/')
+        SKOS = rdflib.Namespace('http://www.w3.org/2004/02/skos/core#')
+        LCCO = rdflib.Namespace('http://loc.gov/catdir/cpso/lcco/')
+
+        graph.bind('dc', DC)
+        graph.bind('skos', SKOS)
+        graph.bind('lcco', LCCO)
+
+        concept = rdflib.URIRef(LCCO['1'])
+        graph.add(
+            (concept,
+             rdflib.RDF.type,
+             SKOS['Concept']))
+        graph.add(
+            (concept,
+             SKOS['prefLabel'],
+             rdflib.Literal('Scrapbooks')))
+        graph.add(
+            (concept,
+             DC['LCC'],
+             rdflib.Literal('AC999.0999 - AC999999.Z9999')))
+        sg = graph.serialize(format='n3', base=LCCO)
+        # See issue 248
+        self.assert_(
+            '<http://loc.gov/catdir/cpso/lcco/1>' in sg, sg)  # BAD BAD
+        # Actual test should be the inverse of the below ...
+        self.assert_('<1> a skos:Concept ;' not in sg, sg)
+
+    def test_base(self):
+        """
+        Further investigations
+        """
+
+        raise SkipTest("base kwarg under investigation")
+
+        gp = """\
+<?xml version="1.0" encoding="UTF-8"?>
+<rdf:RDF
+   xmlns:lcco="http://loc.gov/catdir/cpso/lcco/"
+   xmlns:dc="http://purl.org/dc/terms/"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:skos="http://www.w3.org/2004/02/skos/core#"
+>
+  <rdf:Description rdf:about="lcco:1">
+    <dc:LCC>AC999.0999 - AC999999.Z9999</dc:LCC>
+    <rdf:type
+        rdf:resource="http://www.w3.org/2004/02/skos/core#Concept"/>
+    <skos:prefLabel>Scrapbooks</skos:prefLabel>
+  </rdf:Description>
+</rdf:RDF>
+"""
+        DC = rdflib.Namespace('http://purl.org/dc/terms/')
+        SKOS = rdflib.Namespace('http://www.w3.org/2004/02/skos/core#')
+        LCCO = rdflib.Namespace('http://loc.gov/catdir/cpso/lcco/')
+        graph = rdflib.Graph()
+        graph.bind('dc', DC)
+        graph.bind('skos', SKOS)
+        graph.bind('lcco', LCCO)
+        graph.parse(data=gp, format="xml")
+        sg = graph.serialize(format='n3', base=LCCO)
+        self.assert_('<1> a skos:Concept ;' not in sg, sg)  # BAD BAD BAD
+
+if __name__ == "__main__":
+    unittest.main()