gh-142224: unicodedata: support bidi classes for unassigned code points (GH-144815)

Author: StanFromIreland

Lib/test/test_unicodedata.py

@@ -319,7 +319,7 @@ def test_category(self):
         self.assertRaises(TypeError, self.db.category, 'xx')
 
     def test_bidirectional(self):
-        self.assertEqual(self.db.bidirectional('\uFFFE'), '')
+        self.assertEqual(self.db.bidirectional('\uFFFE'), 'BN')
         self.assertEqual(self.db.bidirectional(' '), 'WS')
         self.assertEqual(self.db.bidirectional('A'), 'L')
         self.assertEqual(self.db.bidirectional('\U00020000'), 'L')
@@ -347,6 +347,17 @@ def test_bidirectional(self):
         self.assertRaises(TypeError, self.db.bidirectional)
         self.assertRaises(TypeError, self.db.bidirectional, 'xx')
 
+    def test_bidirectional_unassigned(self):
+        if self.old:
+            return
+        self.assertEqual(self.db.bidirectional('\u0378'), 'L')
+        self.assertEqual(self.db.bidirectional('\u077F'), 'AL')
+        self.assertEqual(self.db.bidirectional('\u20CF'), 'ET')
+        self.assertEqual(self.db.bidirectional('\u0590'), 'R')
+        self.assertEqual(self.db.bidirectional('\uFFFF'), 'BN')
+        self.assertEqual(self.db.bidirectional('\U0001FFFE'), 'BN')
+        self.assertEqual(self.db.bidirectional('\U00010D01'), 'AL')
+
     def test_decomposition(self):
         self.assertEqual(self.db.decomposition('\uFFFE'),'')
         self.assertEqual(self.db.decomposition('\u00bc'), '<fraction> 0031 2044 0034')
@@ -676,9 +687,9 @@ class UnicodeFunctionsTest(unittest.TestCase, BaseUnicodeFunctionsTest):
 
     # Update this if the database changes. Make sure to do a full rebuild
     # (e.g. 'make distclean && make') to get the correct checksum.
-    expectedchecksum = ('83cc43a2fbb779185832b4c049217d80b05bf349'
+    expectedchecksum = ('668dbbea1136e69d4f00677a5988b23bc78aefc6'
                         if quicktest else
-                        '180bdc91143d8aa2eb9dd6726e66d37606205942')
+                        'b869af769bd8fe352c04622ab90533dc54df5cf3')
 
     @requires_resource('network')
     def test_all_names(self):
@@ -966,9 +977,9 @@ def graphemes(*args):
 class Unicode_3_2_0_FunctionsTest(unittest.TestCase, BaseUnicodeFunctionsTest):
     db = unicodedata.ucd_3_2_0
     old = True
-    expectedchecksum = ('4154d8d1232837e255edf3cdcbb5ab184d71f4a4'
+    expectedchecksum = ('2164a66700e03cba9c9f5ed9e9a8d594d2da136a'
                         if quicktest else
-                        '3aabaf66823b21b3d305dad804a62f6f6387c93e')
+                        'a8276cec9b6991779c5bdaa46c1ae7cc50bc2403')
 
 
 class UnicodeMiscTest(unittest.TestCase):

Misc/NEWS.d/next/Library/2026-02-13-00-00-00.gh-issue-142224.BidiMissing.rst

@@ -0,0 +1,2 @@
+:func:`unicodedata.bidirectional` now return the correct default bidi class
+for unassigned code points.