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[jsinterp] Bring on-par with youtube-dl

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Code from: https://github.com/ytdl-org/youtube-dl/pull/31175, https://github.com/ytdl-org/youtube-dl/pull/31182

Authored by pukkandan, dirkf
This commit is contained in:
pukkandan 2022-08-19 03:46:16 +05:30
parent 8a3da4c68c
commit be13a6e525
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GPG key ID: 7EEE9E1E817D0A39
2 changed files with 295 additions and 61 deletions
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120
test/test_jsinterp.py
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@ -7,8 +7,10 @@ import unittest
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import math
import re
from yt_dlp.jsinterp import JSInterpreter
from yt_dlp.jsinterp import JS_Undefined, JSInterpreter
class TestJSInterpreter(unittest.TestCase):
@ -66,6 +68,9 @@ class TestJSInterpreter(unittest.TestCase):
jsi = JSInterpreter('function f(){return 0 && 1 || 2;}')
self.assertEqual(jsi.call_function('f'), 2)
jsi = JSInterpreter('function f(){return 0 ?? 42;}')
self.assertEqual(jsi.call_function('f'), 0)
def test_array_access(self):
jsi = JSInterpreter('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}')
self.assertEqual(jsi.call_function('f'), [5, 2, 7])
@ -229,6 +234,119 @@ class TestJSInterpreter(unittest.TestCase):
''')
self.assertEqual(jsi.call_function('x')([]), 1)
def test_null(self):
jsi = JSInterpreter('''
function x() { return null; }
''')
self.assertEqual(jsi.call_function('x'), None)
jsi = JSInterpreter('''
function x() { return [null > 0, null < 0, null == 0, null === 0]; }
''')
self.assertEqual(jsi.call_function('x'), [False, False, False, False])
jsi = JSInterpreter('''
function x() { return [null >= 0, null <= 0]; }
''')
self.assertEqual(jsi.call_function('x'), [True, True])
def test_undefined(self):
jsi = JSInterpreter('''
function x() { return undefined === undefined; }
''')
self.assertEqual(jsi.call_function('x'), True)
jsi = JSInterpreter('''
function x() { return undefined; }
''')
self.assertEqual(jsi.call_function('x'), JS_Undefined)
jsi = JSInterpreter('''
function x() { let v; return v; }
''')
self.assertEqual(jsi.call_function('x'), JS_Undefined)
jsi = JSInterpreter('''
function x() { return [undefined === undefined, undefined == undefined, undefined < undefined, undefined > undefined]; }
''')
self.assertEqual(jsi.call_function('x'), [True, True, False, False])
jsi = JSInterpreter('''
function x() { return [undefined === 0, undefined == 0, undefined < 0, undefined > 0]; }
''')
self.assertEqual(jsi.call_function('x'), [False, False, False, False])
jsi = JSInterpreter('''
function x() { return [undefined >= 0, undefined <= 0]; }
''')
self.assertEqual(jsi.call_function('x'), [False, False])
jsi = JSInterpreter('''
function x() { return [undefined > null, undefined < null, undefined == null, undefined === null]; }
''')
self.assertEqual(jsi.call_function('x'), [False, False, True, False])
jsi = JSInterpreter('''
function x() { return [undefined === null, undefined == null, undefined < null, undefined > null]; }
''')
self.assertEqual(jsi.call_function('x'), [False, True, False, False])
jsi = JSInterpreter('''
function x() { let v; return [42+v, v+42, v**42, 42**v, 0**v]; }
''')
for y in jsi.call_function('x'):
self.assertTrue(math.isnan(y))
jsi = JSInterpreter('''
function x() { let v; return v**0; }
''')
self.assertEqual(jsi.call_function('x'), 1)
jsi = JSInterpreter('''
function x() { let v; return [v>42, v<=42, v&&42, 42&&v]; }
''')
self.assertEqual(jsi.call_function('x'), [False, False, JS_Undefined, JS_Undefined])
jsi = JSInterpreter('function x(){return undefined ?? 42; }')
self.assertEqual(jsi.call_function('x'), 42)
def test_object(self):
jsi = JSInterpreter('''
function x() { return {}; }
''')
self.assertEqual(jsi.call_function('x'), {})
jsi = JSInterpreter('''
function x() { let a = {m1: 42, m2: 0 }; return [a["m1"], a.m2]; }
''')
self.assertEqual(jsi.call_function('x'), [42, 0])
jsi = JSInterpreter('''
function x() { let a; return a?.qq; }
''')
self.assertEqual(jsi.call_function('x'), JS_Undefined)
jsi = JSInterpreter('''
function x() { let a = {m1: 42, m2: 0 }; return a?.qq; }
''')
self.assertEqual(jsi.call_function('x'), JS_Undefined)
def test_regex(self):
jsi = JSInterpreter('''
function x() { let a=/,,[/,913,/](,)}/; }
''')
self.assertEqual(jsi.call_function('x'), None)
jsi = JSInterpreter('''
function x() { let a=/,,[/,913,/](,)}/; return a; }
''')
self.assertIsInstance(jsi.call_function('x'), re.Pattern)
jsi = JSInterpreter('''
function x() { let a=/,,[/,913,/](,)}/i; return a; }
''')
self.assertEqual(jsi.call_function('x').flags & re.I, re.I)
if __name__ == '__main__':
unittest.main()