mirror of
https://github.com/yt-dlp/yt-dlp.git
synced 2024-11-13 20:53:06 +00:00
230 lines
7.4 KiB
Python
230 lines
7.4 KiB
Python
#!/usr/bin/env python3
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# Allow direct execution
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import os
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import sys
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import unittest
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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from yt_dlp.jsinterp import JSInterpreter
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class TestJSInterpreter(unittest.TestCase):
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def test_basic(self):
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jsi = JSInterpreter('function x(){;}')
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self.assertEqual(jsi.call_function('x'), None)
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jsi = JSInterpreter('function x3(){return 42;}')
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self.assertEqual(jsi.call_function('x3'), 42)
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jsi = JSInterpreter('function x3(){42}')
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self.assertEqual(jsi.call_function('x3'), None)
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jsi = JSInterpreter('var x5 = function(){return 42;}')
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self.assertEqual(jsi.call_function('x5'), 42)
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def test_calc(self):
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jsi = JSInterpreter('function x4(a){return 2*a+1;}')
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self.assertEqual(jsi.call_function('x4', 3), 7)
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def test_empty_return(self):
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jsi = JSInterpreter('function f(){return; y()}')
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self.assertEqual(jsi.call_function('f'), None)
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def test_morespace(self):
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jsi = JSInterpreter('function x (a) { return 2 * a + 1 ; }')
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self.assertEqual(jsi.call_function('x', 3), 7)
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jsi = JSInterpreter('function f () { x = 2 ; return x; }')
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self.assertEqual(jsi.call_function('f'), 2)
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def test_strange_chars(self):
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jsi = JSInterpreter('function $_xY1 ($_axY1) { var $_axY2 = $_axY1 + 1; return $_axY2; }')
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self.assertEqual(jsi.call_function('$_xY1', 20), 21)
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def test_operators(self):
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jsi = JSInterpreter('function f(){return 1 << 5;}')
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self.assertEqual(jsi.call_function('f'), 32)
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jsi = JSInterpreter('function f(){return 2 ** 5}')
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self.assertEqual(jsi.call_function('f'), 32)
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jsi = JSInterpreter('function f(){return 19 & 21;}')
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self.assertEqual(jsi.call_function('f'), 17)
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jsi = JSInterpreter('function f(){return 11 >> 2;}')
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self.assertEqual(jsi.call_function('f'), 2)
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jsi = JSInterpreter('function f(){return []? 2+3: 4;}')
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self.assertEqual(jsi.call_function('f'), 5)
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jsi = JSInterpreter('function f(){return 1 == 2}')
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self.assertEqual(jsi.call_function('f'), False)
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jsi = JSInterpreter('function f(){return 0 && 1 || 2;}')
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self.assertEqual(jsi.call_function('f'), 2)
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def test_array_access(self):
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jsi = JSInterpreter('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}')
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self.assertEqual(jsi.call_function('f'), [5, 2, 7])
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def test_parens(self):
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jsi = JSInterpreter('function f(){return (1) + (2) * ((( (( (((((3)))))) )) ));}')
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self.assertEqual(jsi.call_function('f'), 7)
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jsi = JSInterpreter('function f(){return (1 + 2) * 3;}')
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self.assertEqual(jsi.call_function('f'), 9)
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def test_quotes(self):
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jsi = JSInterpreter(R'function f(){return "a\"\\("}')
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self.assertEqual(jsi.call_function('f'), R'a"\(')
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def test_assignments(self):
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jsi = JSInterpreter('function f(){var x = 20; x = 30 + 1; return x;}')
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self.assertEqual(jsi.call_function('f'), 31)
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jsi = JSInterpreter('function f(){var x = 20; x += 30 + 1; return x;}')
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self.assertEqual(jsi.call_function('f'), 51)
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jsi = JSInterpreter('function f(){var x = 20; x -= 30 + 1; return x;}')
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self.assertEqual(jsi.call_function('f'), -11)
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def test_comments(self):
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'Skipping: Not yet fully implemented'
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return
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jsi = JSInterpreter('''
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function x() {
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var x = /* 1 + */ 2;
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var y = /* 30
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* 40 */ 50;
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return x + y;
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}
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''')
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self.assertEqual(jsi.call_function('x'), 52)
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jsi = JSInterpreter('''
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function f() {
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var x = "/*";
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var y = 1 /* comment */ + 2;
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return y;
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}
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''')
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self.assertEqual(jsi.call_function('f'), 3)
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def test_precedence(self):
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jsi = JSInterpreter('''
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function x() {
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var a = [10, 20, 30, 40, 50];
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var b = 6;
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a[0]=a[b%a.length];
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return a;
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}''')
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self.assertEqual(jsi.call_function('x'), [20, 20, 30, 40, 50])
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def test_builtins(self):
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jsi = JSInterpreter('''
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function x() { return new Date('Wednesday 31 December 1969 18:01:26 MDT') - 0; }
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''')
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self.assertEqual(jsi.call_function('x'), 86000)
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jsi = JSInterpreter('''
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function x(dt) { return new Date(dt) - 0; }
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''')
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self.assertEqual(jsi.call_function('x', 'Wednesday 31 December 1969 18:01:26 MDT'), 86000)
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def test_call(self):
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jsi = JSInterpreter('''
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function x() { return 2; }
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function y(a) { return x() + (a?a:0); }
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function z() { return y(3); }
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''')
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self.assertEqual(jsi.call_function('z'), 5)
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self.assertEqual(jsi.call_function('y'), 2)
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def test_for_loop(self):
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jsi = JSInterpreter('''
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function x() { a=0; for (i=0; i-10; i++) {a++} return a }
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''')
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self.assertEqual(jsi.call_function('x'), 10)
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def test_switch(self):
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jsi = JSInterpreter('''
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function x(f) { switch(f){
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case 1:f+=1;
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case 2:f+=2;
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case 3:f+=3;break;
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case 4:f+=4;
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default:f=0;
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} return f }
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''')
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self.assertEqual(jsi.call_function('x', 1), 7)
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self.assertEqual(jsi.call_function('x', 3), 6)
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self.assertEqual(jsi.call_function('x', 5), 0)
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def test_switch_default(self):
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jsi = JSInterpreter('''
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function x(f) { switch(f){
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case 2: f+=2;
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default: f-=1;
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case 5:
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case 6: f+=6;
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case 0: break;
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case 1: f+=1;
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} return f }
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''')
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self.assertEqual(jsi.call_function('x', 1), 2)
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self.assertEqual(jsi.call_function('x', 5), 11)
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self.assertEqual(jsi.call_function('x', 9), 14)
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def test_try(self):
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jsi = JSInterpreter('''
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function x() { try{return 10} catch(e){return 5} }
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''')
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self.assertEqual(jsi.call_function('x'), 10)
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def test_for_loop_continue(self):
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jsi = JSInterpreter('''
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function x() { a=0; for (i=0; i-10; i++) { continue; a++ } return a }
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''')
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self.assertEqual(jsi.call_function('x'), 0)
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def test_for_loop_break(self):
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jsi = JSInterpreter('''
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function x() { a=0; for (i=0; i-10; i++) { break; a++ } return a }
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''')
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self.assertEqual(jsi.call_function('x'), 0)
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def test_literal_list(self):
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jsi = JSInterpreter('''
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function x() { return [1, 2, "asdf", [5, 6, 7]][3] }
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''')
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self.assertEqual(jsi.call_function('x'), [5, 6, 7])
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def test_comma(self):
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jsi = JSInterpreter('''
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function x() { a=5; a -= 1, a+=3; return a }
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''')
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self.assertEqual(jsi.call_function('x'), 7)
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jsi = JSInterpreter('''
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function x() { a=5; return (a -= 1, a+=3, a); }
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''')
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self.assertEqual(jsi.call_function('x'), 7)
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def test_void(self):
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jsi = JSInterpreter('''
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function x() { return void 42; }
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''')
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self.assertEqual(jsi.call_function('x'), None)
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def test_return_function(self):
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jsi = JSInterpreter('''
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function x() { return [1, function(){return 1}][1] }
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''')
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self.assertEqual(jsi.call_function('x')([]), 1)
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if __name__ == '__main__':
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unittest.main()
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