def test_time_interval_schema_org(self):

        data = '''<?xml version="1.0" encoding="utf-8" ?>
        <rdf:RDF
         xmlns:dct="http://purl.org/dc/terms/"
         xmlns:schema="http://schema.org/"
         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
        <rdfs:SomeClass rdf:about="http://example.org">
            <dct:temporal>
                <dct:PeriodOfTime>
                    <schema:startDate rdf:datatype="http://www.w3.org/2001/XMLSchema#date">1905-03-01</schema:startDate>
                    <schema:endDate rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2013-01-05</schema:endDate>
                </dct:PeriodOfTime>
            </dct:temporal>
        </rdfs:SomeClass>
        </rdf:RDF>
        '''

        g = Graph()

        g.parse(data=data)

        p = RDFProfile(g)

        start, end = p._time_interval(URIRef('http://example.org'),
                                      DCT.temporal)

        eq_(start, '1905-03-01')
        eq_(end, '2013-01-05')
    def test_time_interval_w3c_time(self):

        data = '''<?xml version="1.0" encoding="utf-8" ?>
        <rdf:RDF
         xmlns:dct="http://purl.org/dc/terms/"
         xmlns:time="http://www.w3.org/2006/time"
         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
        <rdfs:SomeClass rdf:about="http://example.org">
          <dct:temporal>
            <dct:PeriodOfTime>
              <time:hasBeginning>
                <time:Instant>
                  <time:inXSDDateTime rdf:datatype="http://www.w3.org/2001/XMLSchema#date">1904</time:inXSDDateTime>
                </time:Instant>
              </time:hasBeginning>
              <time:hasEnd>
                <time:Instant>
                  <time:inXSDDateTime rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2014-03-22</time:inXSDDateTime>
                </time:Instant>
              </time:hasEnd>
            </dct:PeriodOfTime>
          </dct:temporal>
        </rdfs:SomeClass>
        </rdf:RDF>
        '''

        g = Graph()

        g.parse(data=data)

        p = RDFProfile(g)

        start, end = p._time_interval(URIRef('http://example.org'),
                                      DCT.temporal)

        eq_(start, '1904-01-01')
        eq_(end, '2014-03-22')