test: reuse example namespaces (#2485)

Reuse global definitions for example namespaces, `http://example.com/`,
`http://example.org/`, `example:`, and `urn:example:`.

This makes tests more consistent in that they use the same symbol name
for the same namespace.

test/test_dataset/test_dataset.py

@@ -3,12 +3,12 @@
 import shutil
 import tempfile
 from test.data import context1, likes, pizza, tarek
+from test.utils.namespace import EGSCHEME
 
 import pytest
 
 from rdflib import URIRef, plugin
 from rdflib.graph import DATASET_DEFAULT_GRAPH_ID, Dataset, Graph
-from rdflib.namespace import Namespace
 from rdflib.store import Store
 
 # Will also run SPARQLUpdateStore tests against local SPARQL1.1 endpoint if
@@ -232,9 +232,6 @@ def test_iter(get_dataset):
     assert i_new == i_trad  # both should be 3
 
 
-EGSCHEMA = Namespace("example:")
-
-
 def test_subgraph_without_identifier() -> None:
     """
     Graphs with no identifies assigned are identified by Skolem IRIs with a
@@ -257,7 +254,7 @@ def test_subgraph_without_identifier() -> None:
     )
 
     subgraph: Graph = dataset.graph()
-    subgraph.add((EGSCHEMA["subject"], EGSCHEMA["predicate"], EGSCHEMA["object"]))
+    subgraph.add((EGSCHEME["subject"], EGSCHEME["predicate"], EGSCHEME["object"]))
 
     namespaces = set(nman.namespaces())
     assert next(

test/test_graph/test_diff.py

@@ -17,7 +17,7 @@
 from rdflib import Graph
 from rdflib.compare import graph_diff
 from rdflib.graph import ConjunctiveGraph, Dataset
-from rdflib.namespace import FOAF, RDF, Namespace
+from rdflib.namespace import FOAF, RDF
 from rdflib.term import BNode, Literal
 
 if TYPE_CHECKING:
@@ -128,9 +128,6 @@ def as_params(self) -> ParameterSet:
         return pytest.param(self, marks=self.marks)
 
 
-EGSCHEME = Namespace("example:")
-
-
 @pytest.mark.parametrize(
     "test_case",
     [

test/test_graph/test_graph_http.py

@@ -12,12 +12,13 @@
     ctx_http_handler,
 )
 from test.utils.httpservermock import ServedBaseHTTPServerMock
+from test.utils.namespace import EGDO
 from test.utils.wildcard import URL_PARSE_RESULT_WILDCARD
 from urllib.error import HTTPError
 
 import pytest
 
-from rdflib import Graph, Namespace
+from rdflib import Graph
 
 """
 Test that correct content negotiation headers are passed
@@ -61,8 +62,6 @@
                 ]
                 """
 
-EG = Namespace("http://example.org/")
-
 
 class ContentNegotiationHandler(BaseHTTPRequestHandler):
     def do_GET(self):  # noqa: N802
@@ -106,7 +105,7 @@ def log_message(self, *args):
 class TestGraphHTTP:
     def test_content_negotiation(self) -> None:
         expected = Graph()
-        expected.add((EG.a, EG.b, EG.c))
+        expected.add((EGDO.a, EGDO.b, EGDO.c))
         expected_triples = GraphHelper.triple_set(expected)
 
         with ctx_http_handler(ContentNegotiationHandler) as server:
@@ -121,7 +120,7 @@ def test_content_negotiation(self) -> None:
 
     def test_content_negotiation_no_format(self) -> None:
         expected = Graph()
-        expected.add((EG.a, EG.b, EG.c))
+        expected.add((EGDO.a, EGDO.b, EGDO.c))
         expected_triples = GraphHelper.triple_set(expected)
 
         with ctx_http_handler(ContentNegotiationHandler) as server:
@@ -135,7 +134,7 @@ def test_content_negotiation_no_format(self) -> None:
 
     def test_source(self) -> None:
         expected = Graph()
-        expected.add((EG["a"], EG["b"], EG["c"]))
+        expected.add((EGDO["a"], EGDO["b"], EGDO["c"]))
         expected_triples = GraphHelper.triple_set(expected)
 
         with ServedBaseHTTPServerMock() as httpmock:
@@ -145,7 +144,7 @@ def test_source(self) -> None:
                 MockHTTPResponse(
                     200,
                     "OK",
-                    f"<{EG['a']}> <{EG['b']}> <{EG['c']}>.".encode(),
+                    f"<{EGDO['a']}> <{EGDO['b']}> <{EGDO['c']}>.".encode(),
                     {"Content-Type": ["text/turtle"]},
                 )
             )
@@ -155,7 +154,7 @@ def test_source(self) -> None:
 
     def test_3xx(self) -> None:
         expected = Graph()
-        expected.add((EG["a"], EG["b"], EG["c"]))
+        expected.add((EGDO["a"], EGDO["b"], EGDO["c"]))
         expected_triples = GraphHelper.triple_set(expected)
 
         with ServedBaseHTTPServerMock() as httpmock:
@@ -193,7 +192,7 @@ def test_3xx(self) -> None:
                 MockHTTPResponse(
                     200,
                     "OK",
-                    f"<{EG['a']}> <{EG['b']}> <{EG['c']}>.".encode(),
+                    f"<{EGDO['a']}> <{EGDO['b']}> <{EGDO['c']}>.".encode(),
                     {"Content-Type": ["text/turtle"]},
                 )
             )

test/test_graph/test_skolemization.py

@@ -1,19 +1,17 @@
 import logging
 import re
 from test.utils import GraphHelper
+from test.utils.namespace import EGDC
 from typing import Pattern, Union
 
 import pytest
 
 from rdflib import Graph
-from rdflib.namespace import Namespace
 from rdflib.term import BNode, Literal, URIRef
 
-EG = Namespace("http://example.com/")
-
 base_triples = {
-    (EG.subject, EG.predicate, EG.object0),
-    (EG.subject, EG.predicate, EG.object1),
+    (EGDC.subject, EGDC.predicate, EGDC.object0),
+    (EGDC.subject, EGDC.predicate, EGDC.object1),
 }
 
 
@@ -40,7 +38,7 @@ def test_skolemization(
     g = Graph()
     for triple in base_triples:
         g.add(triple)
-    g.add((EG.scheck, EG.pcheck, node))
+    g.add((EGDC.scheck, EGDC.pcheck, node))
     assert len(g) == 3
     dsg = g.skolemize()
     if expected_uri is None:
@@ -50,7 +48,7 @@ def test_skolemization(
         iset = GraphHelper.triple_or_quad_set(dsg)
         logging.debug("iset = %s", iset)
         assert iset.issuperset(base_triples)
-        check_triples = list(dsg.triples((EG.scheck, EG.pcheck, None)))
+        check_triples = list(dsg.triples((EGDC.scheck, EGDC.pcheck, None)))
         assert len(check_triples) == 1
         sbnode = check_triples[0][2]
         logging.debug("sbnode = %s, sbnode_value = %s", sbnode, f"{sbnode}")
@@ -77,7 +75,7 @@ def test_deskolemization(
     g = Graph()
     for triple in base_triples:
         g.add(triple)
-    g.add((EG.scheck, EG.pcheck, URIRef(iri)))
+    g.add((EGDC.scheck, EGDC.pcheck, URIRef(iri)))
     assert len(g) == 3
     dsg = g.de_skolemize()
     if expected_bnode_value is None:
@@ -87,7 +85,7 @@ def test_deskolemization(
         iset = GraphHelper.triple_or_quad_set(dsg)
         logging.debug("iset = %s", iset)
         assert iset.issuperset(base_triples)
-        check_triples = list(dsg.triples((EG.scheck, EG.pcheck, None)))
+        check_triples = list(dsg.triples((EGDC.scheck, EGDC.pcheck, None)))
         assert len(check_triples) == 1
         bnode = check_triples[0][2]
         logging.debug("bnode = %s, bnode_value = %s", bnode, f"{bnode}")

test/test_issues/test_issue1043.py

@@ -1,8 +1,9 @@
 import io
 import sys
 import unittest
+from test.utils.namespace import EGDO
 
-from rdflib import RDFS, XSD, Graph, Literal, Namespace
+from rdflib import RDFS, XSD, Graph, Literal
 
 
 class TestIssue1043(unittest.TestCase):
@@ -19,8 +20,7 @@ def test_issue_1043(self):
         g = Graph()
         g.bind("xsd", XSD)
         g.bind("rdfs", RDFS)
-        n = Namespace("http://example.org/")
-        g.add((n.number, RDFS.label, Literal(0.00000004, datatype=XSD.decimal)))
+        g.add((EGDO.number, RDFS.label, Literal(0.00000004, datatype=XSD.decimal)))
         g.print()
         sys.stdout = sys.__stdout__
         self.assertEqual(capturedOutput.getvalue(), expected)

test/test_issues/test_issue1484.py

@@ -1,17 +1,17 @@
 import io
 import json
 import unittest
+from test.utils.namespace import EGDO
 
-from rdflib import RDF, RDFS, Graph, Namespace
+from rdflib import RDF, RDFS, Graph
 
 
 class TestIssue1484_json(unittest.TestCase):
     def test_issue_1484_json(self):
         """
         Test JSON-LD parsing of result from json.dump
         """
-        n = Namespace("http://example.org/")
-        jsondata = {"@id": n.s, "@type": [n.t], n.p: {"@id": n.o}}
+        jsondata = {"@id": EGDO.s, "@type": [EGDO.t], EGDO.p: {"@id": EGDO.o}}
 
         s = io.StringIO()
         json.dump(jsondata, s, indent=2, separators=(",", ": "))
@@ -22,14 +22,14 @@ def test_issue_1484_json(self):
             print("S: ", s.read())
             s.seek(0)
 
-        b = n.base
+        b = EGDO.base
         g = Graph()
         g.bind("rdf", RDF)
         g.bind("rdfs", RDFS)
         g.parse(source=s, publicID=b, format="json-ld")
 
-        assert (n.s, RDF.type, n.t) in g
-        assert (n.s, n.p, n.o) in g
+        assert (EGDO.s, RDF.type, EGDO.t) in g
+        assert (EGDO.s, EGDO.p, EGDO.o) in g
 
 
 class TestIssue1484_str(unittest.TestCase):
@@ -39,7 +39,6 @@ def test_issue_1484_str(self):
 
         (Previously passes, but broken by earlier fix for above.)
         """
-        n = Namespace("http://example.org/")
         jsonstr = """
             {
               "@id": "http://example.org/s",
@@ -52,14 +51,14 @@ def test_issue_1484_str(self):
             }
         """
 
-        b = n.base
+        b = EGDO.base
         g = Graph()
         g.bind("rdf", RDF)
         g.bind("rdfs", RDFS)
         g.parse(data=jsonstr, publicID=b, format="json-ld")
 
-        assert (n.s, RDF.type, n.t) in g
-        assert (n.s, n.p, n.o) in g
+        assert (EGDO.s, RDF.type, EGDO.t) in g
+        assert (EGDO.s, EGDO.p, EGDO.o) in g
 
 
 if __name__ == "__main__":

test/test_issues/test_issue274.py

@@ -1,19 +1,19 @@
 from test.utils import eq_
+from test.utils.namespace import EGDO
 from unittest import TestCase
 
 import pytest
 
-from rdflib import RDFS, XSD, BNode, Graph, Literal, Namespace
+from rdflib import RDFS, XSD, BNode, Graph, Literal
 from rdflib.plugins.sparql.operators import (
     register_custom_function,
     unregister_custom_function,
 )
 
-EX = Namespace("http://example.org/")
 G = Graph()
 G.add((BNode(), RDFS.label, Literal("bnode")))
 NS = {
-    "ex": EX,
+    "ex": EGDO,
     "rdfs": RDFS,
     "xsd": XSD,
 }
@@ -176,21 +176,21 @@ def f(x, y):
         return Literal("%s %s" % (x, y), datatype=XSD.string)
 
     def setUp(self):
-        register_custom_function(EX.f, self.f)
+        register_custom_function(EGDO.f, self.f)
 
     def tearDown(self):
-        unregister_custom_function(EX.f, self.f)
+        unregister_custom_function(EGDO.f, self.f)
 
     def test_register_twice_fail(self):
         with self.assertRaises(ValueError):
-            register_custom_function(EX.f, self.f)
+            register_custom_function(EGDO.f, self.f)
 
     def test_register_override(self):
-        register_custom_function(EX.f, self.f, override=True)
+        register_custom_function(EGDO.f, self.f, override=True)
 
     def test_wrong_unregister_warns(self):
         with pytest.warns(UserWarning):
-            unregister_custom_function(EX.notexist)
+            unregister_custom_function(EGDO.notexist)
 
     def test_f(self):
         res = query("""SELECT (ex:f(42, "hello") as ?x) {}""")