gh-131878: Fix input of unicode characters with two or more code points in new pyrepl on Windows (gh-131901)

Co-authored-by: Tomas R. <tomas.roun8@gmail.com>
Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

Lib/test/test_pyrepl/test_eventqueue.py

@@ -53,7 +53,7 @@ class EventQueueTestBase:
         mock_keymap.compile_keymap.return_value = {"a": "b"}
         eq = self.make_eventqueue()
         eq.keymap = {b"a": "b"}
-        eq.push("a")
+        eq.push(b"a")
         mock_keymap.compile_keymap.assert_called()
         self.assertEqual(eq.events[0].evt, "key")
         self.assertEqual(eq.events[0].data, "b")
@@ -63,7 +63,7 @@ class EventQueueTestBase:
         mock_keymap.compile_keymap.return_value = {"a": "b"}
         eq = self.make_eventqueue()
         eq.keymap = {b"c": "d"}
-        eq.push("a")
+        eq.push(b"a")
         mock_keymap.compile_keymap.assert_called()
         self.assertEqual(eq.events[0].evt, "key")
         self.assertEqual(eq.events[0].data, "a")
@@ -73,13 +73,13 @@ class EventQueueTestBase:
         mock_keymap.compile_keymap.return_value = {"a": "b"}
         eq = self.make_eventqueue()
         eq.keymap = {b"a": {b"b": "c"}}
-        eq.push("a")
+        eq.push(b"a")
         mock_keymap.compile_keymap.assert_called()
         self.assertTrue(eq.empty())
-        eq.push("b")
+        eq.push(b"b")
         self.assertEqual(eq.events[0].evt, "key")
         self.assertEqual(eq.events[0].data, "c")
-        eq.push("d")
+        eq.push(b"d")
         self.assertEqual(eq.events[1].evt, "key")
         self.assertEqual(eq.events[1].data, "d")
 
@@ -88,32 +88,32 @@ class EventQueueTestBase:
         mock_keymap.compile_keymap.return_value = {"a": "b"}
         eq = self.make_eventqueue()
         eq.keymap = {b"a": {b"b": "c"}}
-        eq.push("a")
+        eq.push(b"a")
         mock_keymap.compile_keymap.assert_called()
         self.assertTrue(eq.empty())
         eq.flush_buf()
-        eq.push("\033")
+        eq.push(b"\033")
         self.assertEqual(eq.events[0].evt, "key")
         self.assertEqual(eq.events[0].data, "\033")
-        eq.push("b")
+        eq.push(b"b")
         self.assertEqual(eq.events[1].evt, "key")
         self.assertEqual(eq.events[1].data, "b")
 
     def test_push_special_key(self):
         eq = self.make_eventqueue()
         eq.keymap = {}
-        eq.push("\x1b")
-        eq.push("[")
-        eq.push("A")
+        eq.push(b"\x1b")
+        eq.push(b"[")
+        eq.push(b"A")
         self.assertEqual(eq.events[0].evt, "key")
         self.assertEqual(eq.events[0].data, "\x1b")
 
     def test_push_unrecognized_escape_sequence(self):
         eq = self.make_eventqueue()
         eq.keymap = {}
-        eq.push("\x1b")
-        eq.push("[")
-        eq.push("Z")
+        eq.push(b"\x1b")
+        eq.push(b"[")
+        eq.push(b"Z")
         self.assertEqual(len(eq.events), 3)
         self.assertEqual(eq.events[0].evt, "key")
         self.assertEqual(eq.events[0].data, "\x1b")
@@ -122,12 +122,54 @@ class EventQueueTestBase:
         self.assertEqual(eq.events[2].evt, "key")
         self.assertEqual(eq.events[2].data, "Z")
 
-    def test_push_unicode_character(self):
+    def test_push_unicode_character_as_str(self):
         eq = self.make_eventqueue()
         eq.keymap = {}
-        eq.push("ч")
-        self.assertEqual(eq.events[0].evt, "key")
-        self.assertEqual(eq.events[0].data, "ч")
+        with self.assertRaises(AssertionError):
+            eq.push("ч")
+        with self.assertRaises(AssertionError):
+            eq.push("ñ")
+
+    def test_push_unicode_character_two_bytes(self):
+        eq = self.make_eventqueue()
+        eq.keymap = {}
+
+        encoded = "ч".encode(eq.encoding, "replace")
+        self.assertEqual(len(encoded), 2)
+
+        eq.push(encoded[0])
+        e = eq.get()
+        self.assertIsNone(e)
+
+        eq.push(encoded[1])
+        e = eq.get()
+        self.assertEqual(e.evt, "key")
+        self.assertEqual(e.data, "ч")
+
+    def test_push_single_chars_and_unicode_character_as_str(self):
+        eq = self.make_eventqueue()
+        eq.keymap = {}
+
+        def _event(evt, data, raw=None):
+            r = raw if raw is not None else data.encode(eq.encoding)
+            e = Event(evt, data, r)
+            return e
+
+        def _push(keys):
+            for k in keys:
+                eq.push(k)
+
+        self.assertIsInstance("ñ", str)
+
+        # If an exception happens during push, the existing events must be
+        # preserved and we can continue to push.
+        _push(b"b")
+        with self.assertRaises(AssertionError):
+            _push("ñ")
+        _push(b"a")
+
+        self.assertEqual(eq.get(), _event("key", "b"))
+        self.assertEqual(eq.get(), _event("key", "a"))
 
 
 @unittest.skipIf(support.MS_WINDOWS, "No Unix event queue on Windows")