Add test case for same secondary attributes between parent/child.

Author: guzman-raphael

tests/schema.py

@@ -348,3 +348,21 @@ class ThingC(dj.Manual):
     -> [unique, nullable] ThingB
     """
 
+
+@schema
+class Parent(dj.Manual):
+    definition = """
+    parent_id: int
+    ---
+    name: varchar(30)
+    """
+
+
+@schema
+class Child(dj.Manual):
+    definition = """
+    -> Parent
+    child_id: int
+    ---
+    name: varchar(30)
+    """

tests/test_fetch.py

@@ -243,3 +243,6 @@ def test_fetch_format(self):
             assert_dict_equal(l1, l2, 'Primary key is not returned correctly')
         # revert configuration of fetch format
         dj.config['fetch_format'] = 'array'
+
+    def test_same_secondary_attribute(self):
+        print(schema.Child * schema.Parent().proj())