better tests for base support in n3/turtle. Fixes #248.

test/test_n3.py

@@ -2,7 +2,6 @@
 from rdflib.namespace import Namespace
 
 
-
 test_data = """
 #  Definitions of terms describing the n3 model
 #
@@ -58,7 +57,6 @@
 """
 
 
-
 import unittest
 from urllib2 import URLError
 
@@ -89,53 +87,95 @@ def testFileName(self):
         self.assertRaises(Exception, g.parse, data=test_data, format="n3")
         # or.. (challenging comment below):
         # This isn't the expected result based on my reading of n3 bits
-        #g.parse(data=test_data, format="n3")
-        #s = g.value(predicate=URIRef("http://www.example.com/p"), object=URIRef("http://www.example.com/q"))
-        #self.assertEquals(s, URIRef("http://www.example.org/foo.txt"))
+        # g.parse(data=test_data, format="n3")
+        # s = g.value(predicate=URIRef("http://www.example.com/p"), object=URIRef("http://www.example.com/q"))
+        # self.assertEquals(s, URIRef("http://www.example.org/foo.txt"))
 
-    def testBase(self):
+    def testBaseCumulative(self):
         """
         Test that the n3 parser supports base declarations
         This is issue #22
         """
 
         input = """
-@prefix : <http://example.com> . 
+@prefix : <http://example.com/> .
 # default base
 <foo> :name "Foo" .
-# change it 
+# change it
 @base <http://example.com/doc/> .
 <bar> :name "Bar" .
-# and change it more - they are cummalative
+# and change it more - they are cumulative
 @base <doc2/> .
 <bing> :name "Bing" .
+# unless abosulute
+@base <http://test.com/> .
+<bong> :name "Bong" .
+
 """
         g = Graph()
         g.parse(data=input, format="n3")
+        print list(g)
+        self.assertTrue((None, None, Literal('Foo')) in g)
+        self.assertTrue(
+            (URIRef('http://example.com/doc/bar'), None, None) in g)
+        self.assertTrue(
+            (URIRef('http://example.com/doc/doc2/bing'), None, None) in g)
+        self.assertTrue((URIRef('http://test.com/bong'), None, None) in g)
+
+    def testBaseExplicit(self):
+        """
+        Test that the n3 parser supports resolving relative URIs
+        and that base will override
+        """
+
+        input = """
+@prefix : <http://example.com/> .
+# default base
+<foo> :name "Foo" .
+# change it
+@base <http://example.com/doc/> .
+<bar> :name "Bar" .
+"""
+        g = Graph()
+        g.parse(data=input, publicID='http://blah.com/', format="n3")
+        print list(g)
+        self.assertTrue(
+            (URIRef('http://blah.com/foo'), None, Literal('Foo')) in g)
+        self.assertTrue(
+            (URIRef('http://example.com/doc/bar'), None, None) in g)
+
+    def testBaseSerialize(self):
+        g = Graph()
+        g.add((URIRef('http://example.com/people/Bob'), URIRef(
+            'urn:knows'), URIRef('http://example.com/people/Linda')))
+        s = g.serialize(base='http://example.com/', format='n3')
+        self.assertTrue('<people/Bob>' in s)
+        g2 = ConjunctiveGraph()
+        g2.parse(data=s, publicID='http://example.com/', format='n3')
+        self.assertEqual(list(g), list(g2))
+
+    def testIssue23(self):
+        input = """<http://example.com/article1> <http://example.com/title> "this word is in \u201Cquotes\u201D"."""
 
-    def testIssue23(self): 
-        input="""<http://example.com/article1> <http://example.com/title> "this word is in \u201Cquotes\u201D"."""
-
         g = Graph()
         g.parse(data=input, format="n3")
 
         # Note difference in case of hex code, cwm allows lower-case
-        input="""<http://example.com/article1> <http://example.com/title> "this word is in \u201cquotes\u201d"."""
-               
+        input = """<http://example.com/article1> <http://example.com/title> "this word is in \u201cquotes\u201d"."""
+
         g.parse(data=input, format="n3")
 
-    def testIssue29(self): 
-        input="""@prefix foo-bar: <http://example.org/> .
+    def testIssue29(self):
+        input = """@prefix foo-bar: <http://example.org/> .
 
 foo-bar:Ex foo-bar:name "Test" . """
-        
+
         g = Graph()
         g.parse(data=input, format="n3")
-
 
-    def testIssue68(self): 
-        input="""@prefix : <http://some.url/pome#>.\n\n:Brecon a :Place;\n\t:hasLord\n\t\t:Bernard_of_Neufmarch\xc3\xa9 .\n """
-        
+    def testIssue68(self):
+        input = """@prefix : <http://some.url/pome#>.\n\n:Brecon a :Place;\n\t:hasLord\n\t\t:Bernard_of_Neufmarch\xc3\xa9 .\n """
+
         g = Graph()
         g.parse(data=input, format="n3")
 
@@ -146,10 +186,11 @@ def testIssue156(self):
         g = Graph()
         g.parse("test/n3/issue156.n3", format="n3")
 
-    def testDotInPrefix(self): 
-        g=Graph()
-        g.parse(data="@prefix a.1: <http://example.org/> .\n a.1:cake <urn:x> <urn:y> . \n", format='n3')
-
+    def testDotInPrefix(self):
+        g = Graph()
+        g.parse(
+            data="@prefix a.1: <http://example.org/> .\n a.1:cake <urn:x> <urn:y> . \n",
+            format='n3')
 
     def testModel(self):
         g = ConjunctiveGraph()
@@ -163,15 +204,15 @@ def testModel(self):
 
         g.close()
 
-
     def testParse(self):
         g = ConjunctiveGraph()
         try:
-            g.parse("http://groups.csail.mit.edu/dig/2005/09/rein/examples/troop42-policy.n3", format="n3")
+            g.parse(
+                "http://groups.csail.mit.edu/dig/2005/09/rein/examples/troop42-policy.n3", format="n3")
         except URLError:
             from nose import SkipTest
-            raise SkipTest('No network to retrieve the information, skipping test')
-
+            raise SkipTest(
+                'No network to retrieve the information, skipping test')
 
 
 if __name__ == '__main__':