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Back-port JS interpreter upgrade from yt-dlp PR #1437

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This commit is contained in:
df
2021-11-02 11:18:39 +00:00
committed by dirkf
parent 5f5de51a49
commit 96f87aaa3b
3 changed files with 449 additions and 103 deletions
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51
test/test_jsinterp.py
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@@ -112,6 +112,57 @@ class TestJSInterpreter(unittest.TestCase):
''')
self.assertEqual(jsi.call_function('z'), 5)
def test_for_loop(self):
# function x() { a=0; for (i=0; i-10; i++) {a++} a }
jsi = JSInterpreter('''
function x() { a=0; for (i=0; i-10; i = i + 1) {a++} a }
''')
self.assertEqual(jsi.call_function('x'), 10)
def test_switch(self):
jsi = JSInterpreter('''
function x(f) { switch(f){
case 1:f+=1;
case 2:f+=2;
case 3:f+=3;break;
case 4:f+=4;
default:f=0;
} return f }
''')
self.assertEqual(jsi.call_function('x', 1), 7)
self.assertEqual(jsi.call_function('x', 3), 6)
self.assertEqual(jsi.call_function('x', 5), 0)
def test_try(self):
jsi = JSInterpreter('''
function x() { try{return 10} catch(e){return 5} }
''')
self.assertEqual(jsi.call_function('x'), 10)
def test_for_loop_continue(self):
jsi = JSInterpreter('''
function x() { a=0; for (i=0; i-10; i++) { continue; a++ } a }
''')
self.assertEqual(jsi.call_function('x'), 0)
def test_for_loop_break(self):
jsi = JSInterpreter('''
function x() { a=0; for (i=0; i-10; i++) { break; a++ } a }
''')
self.assertEqual(jsi.call_function('x'), 0)
def test_literal_list(self):
jsi = JSInterpreter('''
function x() { [1, 2, "asdf", [5, 6, 7]][3] }
''')
self.assertEqual(jsi.call_function('x'), [5, 6, 7])
def test_comma(self):
jsi = JSInterpreter('''
function x() { a=5; a -= 1, a+=3; return a }
''')
self.assertEqual(jsi.call_function('x'), 7)
if __name__ == '__main__':
unittest.main()