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[jsinterp] Fix div bug breaking player 8c7583ff
Thx bashonly: https://github.com/ytdl-org/youtube-dl/issues/32292#issuecomment-1585639223 Fixes #32292
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3 changed files with 54 additions and 1 deletions
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@ -33,6 +33,55 @@ class TestJSInterpreter(unittest.TestCase):
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jsi = JSInterpreter('function x4(a){return 2*a+1;}')
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self.assertEqual(jsi.call_function('x4', 3), 7)
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def test_add(self):
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jsi = JSInterpreter('function f(){return 42 + 7;}')
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self.assertEqual(jsi.call_function('f'), 49)
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jsi = JSInterpreter('function f(){return 42 + undefined;}')
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self.assertTrue(math.isnan(jsi.call_function('f')))
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jsi = JSInterpreter('function f(){return 42 + null;}')
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self.assertEqual(jsi.call_function('f'), 42)
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def test_sub(self):
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jsi = JSInterpreter('function f(){return 42 - 7;}')
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self.assertEqual(jsi.call_function('f'), 35)
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jsi = JSInterpreter('function f(){return 42 - undefined;}')
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self.assertTrue(math.isnan(jsi.call_function('f')))
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jsi = JSInterpreter('function f(){return 42 - null;}')
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self.assertEqual(jsi.call_function('f'), 42)
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def test_mul(self):
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jsi = JSInterpreter('function f(){return 42 * 7;}')
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self.assertEqual(jsi.call_function('f'), 294)
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jsi = JSInterpreter('function f(){return 42 * undefined;}')
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self.assertTrue(math.isnan(jsi.call_function('f')))
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jsi = JSInterpreter('function f(){return 42 * null;}')
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self.assertEqual(jsi.call_function('f'), 0)
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def test_div(self):
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jsi = JSInterpreter('function f(a, b){return a / b;}')
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self.assertTrue(math.isnan(jsi.call_function('f', 0, 0)))
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self.assertTrue(math.isnan(jsi.call_function('f', JS_Undefined, 1)))
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self.assertTrue(math.isinf(jsi.call_function('f', 2, 0)))
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self.assertEqual(jsi.call_function('f', 0, 3), 0)
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def test_mod(self):
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jsi = JSInterpreter('function f(){return 42 % 7;}')
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self.assertEqual(jsi.call_function('f'), 0)
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jsi = JSInterpreter('function f(){return 42 % 0;}')
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self.assertTrue(math.isnan(jsi.call_function('f')))
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jsi = JSInterpreter('function f(){return 42 % undefined;}')
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self.assertTrue(math.isnan(jsi.call_function('f')))
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def test_exp(self):
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jsi = JSInterpreter('function f(){return 42 ** 2;}')
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self.assertEqual(jsi.call_function('f'), 1764)
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jsi = JSInterpreter('function f(){return 42 ** undefined;}')
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self.assertTrue(math.isnan(jsi.call_function('f')))
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jsi = JSInterpreter('function f(){return 42 ** null;}')
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self.assertEqual(jsi.call_function('f'), 1)
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jsi = JSInterpreter('function f(){return undefined ** 42;}')
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self.assertTrue(math.isnan(jsi.call_function('f')))
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def test_empty_return(self):
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jsi = JSInterpreter('function f(){return; y()}')
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self.assertEqual(jsi.call_function('f'), None)
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@ -151,6 +151,10 @@ _NSIG_TESTS = [
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'https://www.youtube.com/s/player/cfa9e7cb/player_ias.vflset/en_US/base.js',
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'qO0NiMtYQ7TeJnfFG2', 'k9cuJDHNS5O7kQ',
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),
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(
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'https://www.youtube.com/s/player/8c7583ff/player_ias.vflset/en_US/base.js',
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'E2AQVN6y_zM7uN9w8z', '9A2dbY5GDZrt9A',
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),
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]
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@ -82,7 +82,7 @@ def _js_arith_op(op):
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def _js_div(a, b):
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if JS_Undefined in (a, b) or not (a and b):
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if JS_Undefined in (a, b) or not (a or b):
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return _NaN
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return operator.truediv(a or 0, b) if b else float('inf')
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