Add unit test for tree cursors

gramps/gen/db/test/cursor_test.py

@@ -31,6 +31,8 @@ if config.get('preferences.use-bsddb3') or sys.version_info[0] >= 3:
 else:
     from bsddb import dbshelve, db
 
+from ..read import DbBsddbTreeCursor
+
 class Data(object):
 
     def __init__(self, handle,surname, name):
@@ -76,6 +78,7 @@ class CursorTest(unittest.TestCase):
             os.mkdir(env_name)
         self.env.open(env_name,env_flags)
         (self.person_map,self.surnames) = self._open_tables()
+        (self.place_map, self.placerefs) = self._open_treetables()
         
     def _open_tables(self):
         dbmap = dbshelve.DBShelf(self.env)
@@ -101,9 +104,35 @@ class CursorTest(unittest.TestCase):
 
         return (person_map,surnames)
 
+    def _open_treetables(self):
+        dbmap = dbshelve.DBShelf(self.env)
+        dbmap.db.set_pagesize(16384)
+        dbmap.open(self.full_name, 'places', db.DB_HASH,
+                       db.DB_CREATE|db.DB_AUTO_COMMIT, 0o666)
+        place_map     = dbmap
+
+        table_flags = db.DB_CREATE|db.DB_AUTO_COMMIT
+
+        placerefs = db.DB(self.env)
+        placerefs.set_flags(db.DB_DUP|db.DB_DUPSORT)
+        placerefs.open(self.full_name, "placerefs", db.DB_BTREE,
+                               flags=table_flags)
+
+        def find_placeref(key,data):
+            val = data[2]
+            if isinstance(val, UNITYPE):
+                val = val.encode('utf-8')
+            return val
+
+        place_map.associate(placerefs, find_placeref, table_flags)
+
+        return (place_map, placerefs)
+
     def tearDown(self):
         self.person_map.close()
         self.surnames.close()
+        self.place_map.close()
+        self.placerefs.close()
         self.env.close()
         shutil.rmtree(self._tmpdir)
         
@@ -183,6 +212,28 @@ class CursorTest(unittest.TestCase):
 
         self.assertEqual(v.handle, data.handle)
 
+    def test_treecursor(self):
+        #fill with data
+        the_txn = self.env.txn_begin()
+        data = [(b'1', 'countryA',  ''  ),
+                (b'2', 'localityA', '1' ),
+                (b'3', 'localityB', '1' ),
+                (b'4', 'countryB',  ''  ),
+                (b'5', 'streetA',   '2' ),
+                (b'6', 'countryB',  ''  )]
+        for d in data:
+            self.place_map.put(d[0], d, txn=the_txn)
+        the_txn.commit()
+
+        cursor_txn = self.env.txn_begin()
+        cursor = DbBsddbTreeCursor(self.placerefs, self.place_map, False,
+                                   cursor_txn)
+        placenames = set([d[1] for handle, d in cursor])
+        
+        cursor.close()
+        cursor_txn.commit()
+        pldata = set([d[1] for d in data])
+        self.assertEqual(placenames, pldata)
 
 def testSuite():
     suite = unittest.makeSuite(CursorTest, 'test')