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[jsinterp] Fix and improve split/join

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* improve split/join edge cases
* correctly implement regex split (not like re.split)
This commit is contained in:
dirkf 2024-12-12 04:13:06 +00:00
parent 5dee6213ed
commit 94fd774608
2 changed files with 62 additions and 5 deletions
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19
test/test_jsinterp.py
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@ -483,6 +483,13 @@ class TestJSInterpreter(unittest.TestCase):
self._test(jsi, 't-e-s-t', args=[test_input, '-'])
self._test(jsi, '', args=[[], '-'])
self._test('function f(){return '
'[1, 1.0, "abc", {a: 1}, null, undefined, Infinity, NaN].join()}',
'1,1,abc,[object Object],,,Infinity,NaN')
self._test('function f(){return '
'[1, 1.0, "abc", {a: 1}, null, undefined, Infinity, NaN].join("~")}',
'1~1~abc~[object Object]~~~Infinity~NaN')
def test_split(self):
test_result = list('test')
tests = [
@ -496,6 +503,18 @@ class TestJSInterpreter(unittest.TestCase):
self._test(jsi, test_result, args=['t-e-s-t', '-'])
self._test(jsi, [''], args=['', '-'])
self._test(jsi, [], args=['', ''])
# RegExp split
self._test('function f(){return "test".split(/(?:)/)}',
['t', 'e', 's', 't'])
self._test('function f(){return "t-e-s-t".split(/[es-]+/)}',
['t', 't'])
# from MDN: surrogate pairs aren't handled: case 1 fails
# self._test('function f(){return "😄😄".split(/(?:)/)}',
# ['\ud83d', '\ude04', '\ud83d', '\ude04'])
# case 2 beats Py3.2: it gets the case 1 result
if sys.version_info >= (2, 6) and not ((3, 0) <= sys.version_info < (3, 3)):
self._test('function f(){return "😄😄".split(/(?:)/u)}',
['😄', '😄'])
def test_slice(self):
self._test('function f(){return [0, 1, 2, 3, 4, 5, 6, 7, 8].slice()}', [0, 1, 2, 3, 4, 5, 6, 7, 8])