[jsinterp] Small updates for a85a875

* update signature tests
* clarify NaN handling
This commit is contained in:
dirkf 2023-05-19 13:09:18 +01:00
parent d1c6c5c4d6
commit d89c2137ba
3 changed files with 16 additions and 7 deletions

View file

@ -516,6 +516,9 @@ class TestJSInterpreter(unittest.TestCase):
jsi = JSInterpreter('function x(){return 42 << NaN}')
self.assertEqual(jsi.call_function('x'), 42)
jsi = JSInterpreter('function x(){return 42 << Infinity}')
self.assertEqual(jsi.call_function('x'), 42)
def test_32066(self):
jsi = JSInterpreter("function x(){return Math.pow(3, 5) + new Date('1970-01-01T08:01:42.000+08:00') / 1000 * -239 - -24205;}")
self.assertEqual(jsi.call_function('x'), 70)

View file

@ -143,6 +143,14 @@ _NSIG_TESTS = [
'https://www.youtube.com/s/player/dac945fd/player_ias.vflset/en_US/base.js',
'o8BkRxXhuYsBCWi6RplPdP', '3Lx32v_hmzTm6A',
),
(
'https://www.youtube.com/s/player/6f20102c/player_ias.vflset/en_US/base.js',
'lE8DhoDmKqnmJJ', 'pJTTX6XyJP2BYw',
),
(
'https://www.youtube.com/s/player/cfa9e7cb/player_ias.vflset/en_US/base.js',
'qO0NiMtYQ7TeJnfFG2', 'k9cuJDHNS5O7kQ',
),
]

View file

@ -2,7 +2,6 @@ from __future__ import unicode_literals
import itertools
import json
import math
import operator
import re
@ -52,6 +51,10 @@ def wraps_op(op):
return update_and_rename_wrapper
# NB In principle NaN cannot be checked by membership.
# Here all NaN values are actually this one, so _NaN is _NaN,
# although _NaN != _NaN.
_NaN = float('nan')
@ -126,13 +129,8 @@ def _js_comp_op(op):
def _js_ternary(cndn, if_true=True, if_false=False):
"""Simulate JS's ternary operator (cndn?if_true:if_false)"""
if cndn in (False, None, 0, '', JS_Undefined):
if cndn in (False, None, 0, '', JS_Undefined, _NaN):
return if_false
try:
if math.isnan(cndn): # NB: NaN cannot be checked by membership
return if_false
except TypeError:
pass
return if_true