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[JSInterp] Improve tests

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* from yt-dlp/yt-dlp#12313
* also fix d7c2708
This commit is contained in:
dirkf 2025-03-10 11:44:06 +00:00
parent 32f89de92b
commit 420d53387c
2 changed files with 20 additions and 4 deletions
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21
test/test_jsinterp.py
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@ -212,9 +212,16 @@ class TestJSInterpreter(unittest.TestCase):
# undefined # undefined
self._test(jsi, NaN, args=[JS_Undefined]) self._test(jsi, NaN, args=[JS_Undefined])
# y,m,d, ... - may fail with older dates lacking DST data # y,m,d, ... - may fail with older dates lacking DST data
jsi = JSInterpreter('function f() { return new Date(%s); }' jsi = JSInterpreter(
% ('2024, 5, 29, 2, 52, 12, 42',)) 'function f() { return new Date(%s); }'
self._test(jsi, 1719625932042) % ('2024, 5, 29, 2, 52, 12, 42',))
self._test(jsi, (
1719625932042 # UK value
+ (
+ 3600 # back to GMT
+ (time.altzone if time.daylight # host's DST
else time.timezone)
) * 1000))
# no arg # no arg
self.assertAlmostEqual(JSInterpreter( self.assertAlmostEqual(JSInterpreter(
'function f() { return new Date() - 0; }').call_function('f'), 'function f() { return new Date() - 0; }').call_function('f'),
@ -485,6 +492,14 @@ class TestJSInterpreter(unittest.TestCase):
self._test('function f(){return NaN << 42}', 0) self._test('function f(){return NaN << 42}', 0)
self._test('function f(){return "21.9" << 1}', 42) self._test('function f(){return "21.9" << 1}', 42)
self._test('function f(){return 21 << 4294967297}', 42) self._test('function f(){return 21 << 4294967297}', 42)
self._test('function f(){return true << "5";}', 32)
self._test('function f(){return true << true;}', 2)
self._test('function f(){return "19" & "21.9";}', 17)
self._test('function f(){return "19" & false;}', 0)
self._test('function f(){return "11.0" >> "2.1";}', 2)
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)
def test_negative(self): def test_negative(self):
self._test('function f(){return 2 * -2.0 ;}', -4) self._test('function f(){return 2 * -2.0 ;}', -4)

3
youtube_dl/jsinterp.py
View File

@ -154,6 +154,7 @@ def _js_to_primitive(v):
) )
# more exact: yt-dlp/yt-dlp#12110
def _js_toString(v): def _js_toString(v):
return ( return (
'undefined' if v is JS_Undefined 'undefined' if v is JS_Undefined
@ -162,7 +163,7 @@ def _js_toString(v):
else 'null' if v is None else 'null' if v is None
# bool <= int: do this first # bool <= int: do this first
else ('false', 'true')[v] if isinstance(v, bool) else ('false', 'true')[v] if isinstance(v, bool)
else '{0:.7f}'.format(v).rstrip('.0') if isinstance(v, compat_numeric_types) else re.sub(r'(?<=\d)\.?0*$', '', '{0:.7f}'.format(v)) if isinstance(v, compat_numeric_types)
else _js_to_primitive(v)) else _js_to_primitive(v))