string conversion and equality checks

1 files changed, 37 insertions, 0 deletions

diff --git a/test/extractor/generic/test_constant.py b/test/extractor/generic/test_constant.py
index 7fdb8ac..aa33fb4 100644
--- a/test/extractor/generic/test_constant.py
+++ b/test/extractor/generic/test_constant.py
@@ -78,6 +78,43 @@ class TestConstant(unittest.TestCase):
         #self.assertRaises(ValueError, Constant, schema, [
         #    (ns.bse.author, Foo())])
 
+    def test_eq(self):
+        schema_a = '''
+            bse:author rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:string ;
+                owl:maxCardinality "1"^^xsd:number .
+            '''
+        schema_b = '''
+            bse:comment rdfs:subClassOf bsfs:Predicate ;
+                rdfs:domain bsfs:Entity ;
+                rdfs:range xsd:string ;
+                owl:maxCardinality "INF"^^xsd:number .
+            '''
+        tuples_a = [(ns.bse.author, 'Me, myself, and I')]
+        tuples_b = [(ns.bse.comment, 'the quick brown fox jumps over the lazy dog.') ]
+        # distinct instances, same data
+        self.assertEqual(
+            Constant(schema_a, tuples_a),
+            Constant(schema_a, tuples_a))
+        self.assertEqual(
+            hash(Constant(schema_a, tuples_a)),
+            hash(Constant(schema_a, tuples_a)))
+        # different data
+        self.assertNotEqual(
+            Constant(schema_a, tuples_a),
+            Constant(schema_b, tuples_b))
+        self.assertNotEqual(
+            hash(Constant(schema_a, tuples_a)),
+            hash(Constant(schema_b, tuples_b)))
+        # different objects
+        class Foo(): pass
+        self.assertNotEqual(Constant(schema_a, tuples_a), Foo())
+        self.assertNotEqual(hash(Constant(schema_a, tuples_a)), hash(Foo()))
+        self.assertNotEqual(Constant(schema_a, tuples_a), 123)
+        self.assertNotEqual(hash(Constant(schema_a, tuples_a)), hash(123))
+        self.assertNotEqual(Constant(schema_a, tuples_a), None)
+        self.assertNotEqual(hash(Constant(schema_a, tuples_a)), hash(None))
 
 
 ## main ##