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[jsinterp] Fix increment/decrement evaluation (#13238)

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Closes #13241
Authored by: seproDev, bashonly

Co-authored-by: bashonly <88596187+bashonly@users.noreply.github.com>
This commit is contained in:
sepro
2025-05-22 00:27:07 +02:00
committed by GitHub
parent 83fabf3524
commit 167d7a9f0f
3 changed files with 43 additions and 30 deletions
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8
test/test_jsinterp.py
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@ -478,6 +478,14 @@ class TestJSInterpreter(unittest.TestCase):
func = jsi.extract_function('c', {'e': 10}, {'f': 100, 'g': 1000})
self.assertEqual(func([1]), 1111)
def test_increment_decrement(self):
self._test('function f() { var x = 1; return ++x; }', 2)
self._test('function f() { var x = 1; return x++; }', 1)
self._test('function f() { var x = 1; x--; return x }', 0)
self._test('function f() { var y; var x = 1; x++, --x, x--, x--, y="z", "abc", x++; return --x }', -1)
self._test('function f() { var a = "test--"; return a; }', 'test--')
self._test('function f() { var b = 1; var a = "b--"; return a; }', 'b--')
if __name__ == '__main__':
unittest.main()