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[JSInterp] Add tests and relevant functionality from yt-dlp

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* thx seproDev, bashonly: yt-dlp/yt-dlp#12760, yt-dlp/yt-dlp#12761:
  - Improve nested attribute support
  - Pass global stack when extracting objects
  - interpret_statement: Match attribute before indexing
  - Fix assignment to array elements with nested brackets
  - Add new signature tests
  - Invalidate JS function cache
  - Avoid testdata dupes now that we cache by URL

* rework nsig function name search
* fully fixes #33102
* update cache required versions
* update program version
This commit is contained in:
dirkf 2025-04-04 12:53:28 +01:00
parent bd2ded59f2
commit c052a16f72
5 changed files with 129 additions and 22 deletions
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16
test/test_jsinterp.py
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@ -180,6 +180,7 @@ class TestJSInterpreter(unittest.TestCase):
self._test('function f(){var x = 20; x = 30 + 1; return x;}', 31)
self._test('function f(){var x = 20; x += 30 + 1; return x;}', 51)
self._test('function f(){var x = 20; x -= 30 + 1; return x;}', -11)
self._test('function f(){var x = 2; var y = ["a", "b"]; y[x%y["length"]]="z"; return y}', ['z', 'b'])
def test_comments(self):
self._test('''
@ -552,6 +553,8 @@ class TestJSInterpreter(unittest.TestCase):
test_result = list('test')
tests = [
'function f(a, b){return a.split(b)}',
'function f(a, b){return a["split"](b)}',
'function f(a, b){let x = ["split"]; return a[x[0]](b)}',
'function f(a, b){return String.prototype.split.call(a, b)}',
'function f(a, b){return String.prototype.split.apply(a, [b])}',
]
@ -602,6 +605,9 @@ class TestJSInterpreter(unittest.TestCase):
self._test('function f(){return "012345678".slice(-1, 1)}', '')
self._test('function f(){return "012345678".slice(-3, -1)}', '67')
def test_splice(self):
self._test('function f(){var T = ["0", "1", "2"]; T["splice"](2, 1, "0")[0]; return T }', ['0', '1', '0'])
def test_pop(self):
# pop
self._test('function f(){var a = [0, 1, 2, 3, 4, 5, 6, 7, 8]; return [a.pop(), a]}',
@ -636,6 +642,16 @@ class TestJSInterpreter(unittest.TestCase):
'return [ret.length, ret[0][0], ret[1][1], ret[0][2]]}',
[2, 4, 1, [4, 2]])
def test_extract_function(self):
jsi = JSInterpreter('function a(b) { return b + 1; }')
func = jsi.extract_function('a')
self.assertEqual(func([2]), 3)
def test_extract_function_with_global_stack(self):
jsi = JSInterpreter('function c(d) { return d + e + f + g; }')
func = jsi.extract_function('c', {'e': 10}, {'f': 100, 'g': 1000})
self.assertEqual(func([1]), 1111)
if __name__ == '__main__':
unittest.main()