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[jsinterp] Small updates for a85a875
* update signature tests * clarify NaN handling
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@ -516,6 +516,9 @@ class TestJSInterpreter(unittest.TestCase):
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jsi = JSInterpreter('function x(){return 42 << NaN}')
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self.assertEqual(jsi.call_function('x'), 42)
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jsi = JSInterpreter('function x(){return 42 << Infinity}')
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self.assertEqual(jsi.call_function('x'), 42)
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def test_32066(self):
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jsi = JSInterpreter("function x(){return Math.pow(3, 5) + new Date('1970-01-01T08:01:42.000+08:00') / 1000 * -239 - -24205;}")
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self.assertEqual(jsi.call_function('x'), 70)
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@ -143,6 +143,14 @@ _NSIG_TESTS = [
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'https://www.youtube.com/s/player/dac945fd/player_ias.vflset/en_US/base.js',
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'o8BkRxXhuYsBCWi6RplPdP', '3Lx32v_hmzTm6A',
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),
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(
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'https://www.youtube.com/s/player/6f20102c/player_ias.vflset/en_US/base.js',
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'lE8DhoDmKqnmJJ', 'pJTTX6XyJP2BYw',
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),
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(
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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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@ -2,7 +2,6 @@ from __future__ import unicode_literals
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import itertools
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import json
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import math
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import operator
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import re
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@ -52,6 +51,10 @@ def wraps_op(op):
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return update_and_rename_wrapper
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# NB In principle NaN cannot be checked by membership.
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# Here all NaN values are actually this one, so _NaN is _NaN,
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# although _NaN != _NaN.
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_NaN = float('nan')
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@ -126,13 +129,8 @@ def _js_comp_op(op):
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def _js_ternary(cndn, if_true=True, if_false=False):
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"""Simulate JS's ternary operator (cndn?if_true:if_false)"""
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if cndn in (False, None, 0, '', JS_Undefined):
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if cndn in (False, None, 0, '', JS_Undefined, _NaN):
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return if_false
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try:
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if math.isnan(cndn): # NB: NaN cannot be checked by membership
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return if_false
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except TypeError:
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pass
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return if_true
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