[jsinterp] Fix bitwise operations (#15985)

Authored by: bashonly

test/test_jsinterp.py

@@ -9,7 +9,12 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 import math
 
-from yt_dlp.jsinterp import JS_Undefined, JSInterpreter, js_number_to_string
+from yt_dlp.jsinterp import (
+    JS_Undefined,
+    JSInterpreter,
+    int_to_int32,
+    js_number_to_string,
+)
 
 
 class NaN:
@@ -101,8 +106,8 @@ class TestJSInterpreter(unittest.TestCase):
         self._test('function f(){return 5 ^ 9;}', 12)
         self._test('function f(){return 0.0 << NaN}', 0)
         self._test('function f(){return null << undefined}', 0)
-        # TODO: Does not work due to number too large
-        # self._test('function f(){return 21 << 4294967297}', 42)
+        self._test('function f(){return -12616 ^ 5041}', -8951)
+        self._test('function f(){return 21 << 4294967297}', 42)
 
     def test_array_access(self):
         self._test('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}', [5, 2, 7])
@@ -447,6 +452,22 @@ class TestJSInterpreter(unittest.TestCase):
     def test_splice(self):
         self._test('function f(){var T = ["0", "1", "2"]; T["splice"](2, 1, "0")[0]; return T }', ['0', '1', '0'])
 
+    def test_int_to_int32(self):
+        for inp, exp in [
+            (0, 0),
+            (1, 1),
+            (-1, -1),
+            (-8951, -8951),
+            (2147483647, 2147483647),
+            (2147483648, -2147483648),
+            (2147483649, -2147483647),
+            (-2147483649, 2147483647),
+            (-2147483648, -2147483648),
+            (-16799986688, 379882496),
+            (39570129568, 915423904),
+        ]:
+            assert int_to_int32(inp) == exp
+
     def test_js_number_to_string(self):
         for test, radix, expected in [
             (0, None, '0'),