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test_jsinterp.py (25455B)

    

  1. #!/usr/bin/env python
  3. from __future__ import unicode_literals
  5. # Allow direct execution
  6. import os
  7. import sys
  8. import unittest
  9. sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
  11. import math
  12. import re
  14. from youtube_dl.jsinterp import JS_Undefined, JSInterpreter
  17. class TestJSInterpreter(unittest.TestCase):
  18.     def test_basic(self):
  19.         jsi = JSInterpreter('function x(){;}')
  20.         self.assertEqual(jsi.call_function('x'), None)
  21.         self.assertEqual(repr(jsi.extract_function('x')), 'F<x>')
  23.         jsi = JSInterpreter('function x3(){return 42;}')
  24.         self.assertEqual(jsi.call_function('x3'), 42)
  26.         jsi = JSInterpreter('function x3(){42}')
  27.         self.assertEqual(jsi.call_function('x3'), None)
  29.         jsi = JSInterpreter('var x5 = function(){return 42;}')
  30.         self.assertEqual(jsi.call_function('x5'), 42)
  32.     def test_calc(self):
  33.         jsi = JSInterpreter('function x4(a){return 2*a+1;}')
  34.         self.assertEqual(jsi.call_function('x4', 3), 7)
  36.     def test_add(self):
  37.         jsi = JSInterpreter('function f(){return 42 + 7;}')
  38.         self.assertEqual(jsi.call_function('f'), 49)
  39.         jsi = JSInterpreter('function f(){return 42 + undefined;}')
  40.         self.assertTrue(math.isnan(jsi.call_function('f')))
  41.         jsi = JSInterpreter('function f(){return 42 + null;}')
  42.         self.assertEqual(jsi.call_function('f'), 42)
  44.     def test_sub(self):
  45.         jsi = JSInterpreter('function f(){return 42 - 7;}')
  46.         self.assertEqual(jsi.call_function('f'), 35)
  47.         jsi = JSInterpreter('function f(){return 42 - undefined;}')
  48.         self.assertTrue(math.isnan(jsi.call_function('f')))
  49.         jsi = JSInterpreter('function f(){return 42 - null;}')
  50.         self.assertEqual(jsi.call_function('f'), 42)
  52.     def test_mul(self):
  53.         jsi = JSInterpreter('function f(){return 42 * 7;}')
  54.         self.assertEqual(jsi.call_function('f'), 294)
  55.         jsi = JSInterpreter('function f(){return 42 * undefined;}')
  56.         self.assertTrue(math.isnan(jsi.call_function('f')))
  57.         jsi = JSInterpreter('function f(){return 42 * null;}')
  58.         self.assertEqual(jsi.call_function('f'), 0)
  60.     def test_div(self):
  61.         jsi = JSInterpreter('function f(a, b){return a / b;}')
  62.         self.assertTrue(math.isnan(jsi.call_function('f', 0, 0)))
  63.         self.assertTrue(math.isnan(jsi.call_function('f', JS_Undefined, 1)))
  64.         self.assertTrue(math.isinf(jsi.call_function('f', 2, 0)))
  65.         self.assertEqual(jsi.call_function('f', 0, 3), 0)
  67.     def test_mod(self):
  68.         jsi = JSInterpreter('function f(){return 42 % 7;}')
  69.         self.assertEqual(jsi.call_function('f'), 0)
  70.         jsi = JSInterpreter('function f(){return 42 % 0;}')
  71.         self.assertTrue(math.isnan(jsi.call_function('f')))
  72.         jsi = JSInterpreter('function f(){return 42 % undefined;}')
  73.         self.assertTrue(math.isnan(jsi.call_function('f')))
  75.     def test_exp(self):
  76.         jsi = JSInterpreter('function f(){return 42 ** 2;}')
  77.         self.assertEqual(jsi.call_function('f'), 1764)
  78.         jsi = JSInterpreter('function f(){return 42 ** undefined;}')
  79.         self.assertTrue(math.isnan(jsi.call_function('f')))
  80.         jsi = JSInterpreter('function f(){return 42 ** null;}')
  81.         self.assertEqual(jsi.call_function('f'), 1)
  82.         jsi = JSInterpreter('function f(){return undefined ** 42;}')
  83.         self.assertTrue(math.isnan(jsi.call_function('f')))
  85.     def test_empty_return(self):
  86.         jsi = JSInterpreter('function f(){return; y()}')
  87.         self.assertEqual(jsi.call_function('f'), None)
  89.     def test_morespace(self):
  90.         jsi = JSInterpreter('function x (a) { return 2 * a + 1 ; }')
  91.         self.assertEqual(jsi.call_function('x', 3), 7)
  93.         jsi = JSInterpreter('function f () { x =  2  ; return x; }')
  94.         self.assertEqual(jsi.call_function('f'), 2)
  96.     def test_strange_chars(self):
  97.         jsi = JSInterpreter('function $_xY1 ($_axY1) { var $_axY2 = $_axY1 + 1; return $_axY2; }')
  98.         self.assertEqual(jsi.call_function('$_xY1', 20), 21)
  100.     def test_operators(self):
  101.         jsi = JSInterpreter('function f(){return 1 << 5;}')
  102.         self.assertEqual(jsi.call_function('f'), 32)
  104.         jsi = JSInterpreter('function f(){return 2 ** 5}')
  105.         self.assertEqual(jsi.call_function('f'), 32)
  107.         jsi = JSInterpreter('function f(){return 19 & 21;}')
  108.         self.assertEqual(jsi.call_function('f'), 17)
  110.         jsi = JSInterpreter('function f(){return 11 >> 2;}')
  111.         self.assertEqual(jsi.call_function('f'), 2)
  113.         jsi = JSInterpreter('function f(){return []? 2+3: 4;}')
  114.         self.assertEqual(jsi.call_function('f'), 5)
  116.         jsi = JSInterpreter('function f(){return 1 == 2}')
  117.         self.assertEqual(jsi.call_function('f'), False)
  119.         jsi = JSInterpreter('function f(){return 0 && 1 || 2;}')
  120.         self.assertEqual(jsi.call_function('f'), 2)
  122.         jsi = JSInterpreter('function f(){return 0 ?? 42;}')
  123.         self.assertEqual(jsi.call_function('f'), 0)
  125.         jsi = JSInterpreter('function f(){return "life, the universe and everything" < 42;}')
  126.         self.assertFalse(jsi.call_function('f'))
  128.     def test_array_access(self):
  129.         jsi = JSInterpreter('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}')
  130.         self.assertEqual(jsi.call_function('f'), [5, 2, 7])
  132.     def test_parens(self):
  133.         jsi = JSInterpreter('function f(){return (1) + (2) * ((( (( (((((3)))))) )) ));}')
  134.         self.assertEqual(jsi.call_function('f'), 7)
  136.         jsi = JSInterpreter('function f(){return (1 + 2) * 3;}')
  137.         self.assertEqual(jsi.call_function('f'), 9)
  139.     def test_quotes(self):
  140.         jsi = JSInterpreter(r'function f(){return "a\"\\("}')
  141.         self.assertEqual(jsi.call_function('f'), r'a"\(')
  143.     def test_assignments(self):
  144.         jsi = JSInterpreter('function f(){var x = 20; x = 30 + 1; return x;}')
  145.         self.assertEqual(jsi.call_function('f'), 31)
  147.         jsi = JSInterpreter('function f(){var x = 20; x += 30 + 1; return x;}')
  148.         self.assertEqual(jsi.call_function('f'), 51)
  150.         jsi = JSInterpreter('function f(){var x = 20; x -= 30 + 1; return x;}')
  151.         self.assertEqual(jsi.call_function('f'), -11)
  153.     def test_comments(self):
  154.         'Skipping: Not yet fully implemented'
  155.         return
  156.         jsi = JSInterpreter('''
  157.         function x() {
  158.             var x = /* 1 + */ 2;
  159.             var y = /* 30
  160.             * 40 */ 50;
  161.             return x + y;
  162.         }
  163.         ''')
  164.         self.assertEqual(jsi.call_function('x'), 52)
  166.         jsi = JSInterpreter('''
  167.         function f() {
  168.             var x = "/*";
  169.             var y = 1 /* comment */ + 2;
  170.             return y;
  171.         }
  172.         ''')
  173.         self.assertEqual(jsi.call_function('f'), 3)
  175.     def test_precedence(self):
  176.         jsi = JSInterpreter('''
  177.         function x() {
  178.             var a = [10, 20, 30, 40, 50];
  179.             var b = 6;
  180.             a[0]=a[b%a.length];
  181.             return a;
  182.         }''')
  183.         self.assertEqual(jsi.call_function('x'), [20, 20, 30, 40, 50])
  185.     def test_builtins(self):
  186.         jsi = JSInterpreter('''
  187.         function x() { return NaN }
  188.         ''')
  189.         self.assertTrue(math.isnan(jsi.call_function('x')))
  191.     def test_Date(self):
  192.         jsi = JSInterpreter('''
  193.         function x(dt) { return new Date(dt) - 0; }
  194.         ''')
  195.         self.assertEqual(jsi.call_function('x', 'Wednesday 31 December 1969 18:01:26 MDT'), 86000)
  197.         # date format m/d/y
  198.         self.assertEqual(jsi.call_function('x', '12/31/1969 18:01:26 MDT'), 86000)
  200.         # epoch 0
  201.         self.assertEqual(jsi.call_function('x', '1 January 1970 00:00:00 UTC'), 0)
  203.     def test_call(self):
  204.         jsi = JSInterpreter('''
  205.         function x() { return 2; }
  206.         function y(a) { return x() + (a?a:0); }
  207.         function z() { return y(3); }
  208.         ''')
  209.         self.assertEqual(jsi.call_function('z'), 5)
  210.         self.assertEqual(jsi.call_function('y'), 2)
  212.     def test_if(self):
  213.         jsi = JSInterpreter('''
  214.         function x() {
  215.             let a = 9;
  216.             if (0==0) {a++}
  217.             return a
  218.         }''')
  219.         self.assertEqual(jsi.call_function('x'), 10)
  221.         jsi = JSInterpreter('''
  222.         function x() {
  223.             if (0==0) {return 10}
  224.         }''')
  225.         self.assertEqual(jsi.call_function('x'), 10)
  227.         jsi = JSInterpreter('''
  228.         function x() {
  229.             if (0!=0) {return 1}
  230.             else {return 10}
  231.         }''')
  232.         self.assertEqual(jsi.call_function('x'), 10)
  234.         """  # Unsupported
  235.         jsi = JSInterpreter('''
  236.         function x() {
  237.             if (0!=0) return 1;
  238.             else {return 10}
  239.         }''')
  240.         self.assertEqual(jsi.call_function('x'), 10)
  241.         """
  243.     def test_elseif(self):
  244.         jsi = JSInterpreter('''
  245.         function x() {
  246.             if (0!=0) {return 1}
  247.             else if (1==0) {return 2}
  248.             else {return 10}
  249.         }''')
  250.         self.assertEqual(jsi.call_function('x'), 10)
  252.         """  # Unsupported
  253.         jsi = JSInterpreter('''
  254.         function x() {
  255.             if (0!=0) return 1;
  256.             else if (1==0) {return 2}
  257.             else {return 10}
  258.         }''')
  259.         self.assertEqual(jsi.call_function('x'), 10)
  260.         # etc
  261.         """
  263.     def test_for_loop(self):
  264.         # function x() { a=0; for (i=0; i-10; i++) {a++} a }
  265.         jsi = JSInterpreter('''
  266.         function x() { a=0; for (i=0; i-10; i++) {a++} return a }
  267.         ''')
  268.         self.assertEqual(jsi.call_function('x'), 10)
  270.     def test_while_loop(self):
  271.         # function x() { a=0; while (a<10) {a++} a }
  272.         jsi = JSInterpreter('''
  273.         function x() { a=0; while (a<10) {a++} return a }
  274.         ''')
  275.         self.assertEqual(jsi.call_function('x'), 10)
  277.     def test_switch(self):
  278.         jsi = JSInterpreter('''
  279.         function x(f) { switch(f){
  280.             case 1:f+=1;
  281.             case 2:f+=2;
  282.             case 3:f+=3;break;
  283.             case 4:f+=4;
  284.             default:f=0;
  285.         } return f }
  286.         ''')
  287.         self.assertEqual(jsi.call_function('x', 1), 7)
  288.         self.assertEqual(jsi.call_function('x', 3), 6)
  289.         self.assertEqual(jsi.call_function('x', 5), 0)
  291.     def test_switch_default(self):
  292.         jsi = JSInterpreter('''
  293.         function x(f) { switch(f){
  294.             case 2: f+=2;
  295.             default: f-=1;
  296.             case 5:
  297.             case 6: f+=6;
  298.             case 0: break;
  299.             case 1: f+=1;
  300.         } return f }
  301.         ''')
  302.         self.assertEqual(jsi.call_function('x', 1), 2)
  303.         self.assertEqual(jsi.call_function('x', 5), 11)
  304.         self.assertEqual(jsi.call_function('x', 9), 14)
  306.     def test_try(self):
  307.         jsi = JSInterpreter('''
  308.         function x() { try{return 10} catch(e){return 5} }
  309.         ''')
  310.         self.assertEqual(jsi.call_function('x'), 10)
  312.     def test_catch(self):
  313.         jsi = JSInterpreter('''
  314.         function x() { try{throw 10} catch(e){return 5} }
  315.         ''')
  316.         self.assertEqual(jsi.call_function('x'), 5)
  318.     def test_finally(self):
  319.         jsi = JSInterpreter('''
  320.         function x() { try{throw 10} finally {return 42} }
  321.         ''')
  322.         self.assertEqual(jsi.call_function('x'), 42)
  323.         jsi = JSInterpreter('''
  324.         function x() { try{throw 10} catch(e){return 5} finally {return 42} }
  325.         ''')
  326.         self.assertEqual(jsi.call_function('x'), 42)
  328.     def test_nested_try(self):
  329.         jsi = JSInterpreter('''
  330.         function x() {try {
  331.             try{throw 10} finally {throw 42}
  332.             } catch(e){return 5} }
  333.         ''')
  334.         self.assertEqual(jsi.call_function('x'), 5)
  336.     def test_for_loop_continue(self):
  337.         jsi = JSInterpreter('''
  338.         function x() { a=0; for (i=0; i-10; i++) { continue; a++ } return a }
  339.         ''')
  340.         self.assertEqual(jsi.call_function('x'), 0)
  342.     def test_for_loop_break(self):
  343.         jsi = JSInterpreter('''
  344.         function x() { a=0; for (i=0; i-10; i++) { break; a++ } return a }
  345.         ''')
  346.         self.assertEqual(jsi.call_function('x'), 0)
  348.     def test_for_loop_try(self):
  349.         jsi = JSInterpreter('''
  350.         function x() {
  351.             for (i=0; i-10; i++) { try { if (i == 5) throw i} catch {return 10} finally {break} };
  352.             return 42 }
  353.         ''')
  354.         self.assertEqual(jsi.call_function('x'), 42)
  356.     def test_literal_list(self):
  357.         jsi = JSInterpreter('''
  358.         function x() { return [1, 2, "asdf", [5, 6, 7]][3] }
  359.         ''')
  360.         self.assertEqual(jsi.call_function('x'), [5, 6, 7])
  362.     def test_comma(self):
  363.         jsi = JSInterpreter('''
  364.         function x() { a=5; a -= 1, a+=3; return a }
  365.         ''')
  366.         self.assertEqual(jsi.call_function('x'), 7)
  367.         jsi = JSInterpreter('''
  368.         function x() { a=5; return (a -= 1, a+=3, a); }
  369.         ''')
  370.         self.assertEqual(jsi.call_function('x'), 7)
  372.         jsi = JSInterpreter('''
  373.         function x() { return (l=[0,1,2,3], function(a, b){return a+b})((l[1], l[2]), l[3]) }
  374.         ''')
  375.         self.assertEqual(jsi.call_function('x'), 5)
  377.     def test_void(self):
  378.         jsi = JSInterpreter('''
  379.         function x() { return void 42; }
  380.         ''')
  381.         self.assertEqual(jsi.call_function('x'), None)
  383.     def test_return_function(self):
  384.         jsi = JSInterpreter('''
  385.         function x() { return [1, function(){return 1}][1] }
  386.         ''')
  387.         self.assertEqual(jsi.call_function('x')([]), 1)
  389.     def test_null(self):
  390.         jsi = JSInterpreter('''
  391.         function x() { return null; }
  392.         ''')
  393.         self.assertIs(jsi.call_function('x'), None)
  395.         jsi = JSInterpreter('''
  396.         function x() { return [null > 0, null < 0, null == 0, null === 0]; }
  397.         ''')
  398.         self.assertEqual(jsi.call_function('x'), [False, False, False, False])
  400.         jsi = JSInterpreter('''
  401.         function x() { return [null >= 0, null <= 0]; }
  402.         ''')
  403.         self.assertEqual(jsi.call_function('x'), [True, True])
  405.     def test_undefined(self):
  406.         jsi = JSInterpreter('''
  407.         function x() { return undefined === undefined; }
  408.         ''')
  409.         self.assertTrue(jsi.call_function('x'))
  411.         jsi = JSInterpreter('''
  412.         function x() { return undefined; }
  413.         ''')
  414.         self.assertIs(jsi.call_function('x'), JS_Undefined)
  416.         jsi = JSInterpreter('''
  417.         function x() { let v; return v; }
  418.         ''')
  419.         self.assertIs(jsi.call_function('x'), JS_Undefined)
  421.         jsi = JSInterpreter('''
  422.         function x() { return [undefined === undefined, undefined == undefined, undefined < undefined, undefined > undefined]; }
  423.         ''')
  424.         self.assertEqual(jsi.call_function('x'), [True, True, False, False])
  426.         jsi = JSInterpreter('''
  427.         function x() { return [undefined === 0, undefined == 0, undefined < 0, undefined > 0]; }
  428.         ''')
  429.         self.assertEqual(jsi.call_function('x'), [False, False, False, False])
  431.         jsi = JSInterpreter('''
  432.         function x() { return [undefined >= 0, undefined <= 0]; }
  433.         ''')
  434.         self.assertEqual(jsi.call_function('x'), [False, False])
  436.         jsi = JSInterpreter('''
  437.         function x() { return [undefined > null, undefined < null, undefined == null, undefined === null]; }
  438.         ''')
  439.         self.assertEqual(jsi.call_function('x'), [False, False, True, False])
  441.         jsi = JSInterpreter('''
  442.         function x() { return [undefined === null, undefined == null, undefined < null, undefined > null]; }
  443.         ''')
  444.         self.assertEqual(jsi.call_function('x'), [False, True, False, False])
  446.         jsi = JSInterpreter('''
  447.         function x() { let v; return [42+v, v+42, v**42, 42**v, 0**v]; }
  448.         ''')
  449.         for y in jsi.call_function('x'):
  450.             self.assertTrue(math.isnan(y))
  452.         jsi = JSInterpreter('''
  453.         function x() { let v; return v**0; }
  454.         ''')
  455.         self.assertEqual(jsi.call_function('x'), 1)
  457.         jsi = JSInterpreter('''
  458.         function x() { let v; return [v>42, v<=42, v&&42, 42&&v]; }
  459.         ''')
  460.         self.assertEqual(jsi.call_function('x'), [False, False, JS_Undefined, JS_Undefined])
  462.         jsi = JSInterpreter('function x(){return undefined ?? 42; }')
  463.         self.assertEqual(jsi.call_function('x'), 42)
  465.     def test_object(self):
  466.         jsi = JSInterpreter('''
  467.         function x() { return {}; }
  468.         ''')
  469.         self.assertEqual(jsi.call_function('x'), {})
  471.         jsi = JSInterpreter('''
  472.         function x() { let a = {m1: 42, m2: 0 }; return [a["m1"], a.m2]; }
  473.         ''')
  474.         self.assertEqual(jsi.call_function('x'), [42, 0])
  476.         jsi = JSInterpreter('''
  477.         function x() { let a; return a?.qq; }
  478.         ''')
  479.         self.assertIs(jsi.call_function('x'), JS_Undefined)
  481.         jsi = JSInterpreter('''
  482.         function x() { let a = {m1: 42, m2: 0 }; return a?.qq; }
  483.         ''')
  484.         self.assertIs(jsi.call_function('x'), JS_Undefined)
  486.     def test_regex(self):
  487.         jsi = JSInterpreter('''
  488.         function x() { let a=/,,[/,913,/](,)}/; }
  489.         ''')
  490.         self.assertIs(jsi.call_function('x'), None)
  492.         jsi = JSInterpreter('''
  493.         function x() { let a=/,,[/,913,/](,)}/; "".replace(a, ""); return a; }
  494.         ''')
  495.         attrs = set(('findall', 'finditer', 'match', 'scanner', 'search',
  496.                      'split', 'sub', 'subn'))
  497.         if sys.version_info >= (2, 7):
  498.             # documented for 2.6 but may not be found
  499.             attrs.update(('flags', 'groupindex', 'groups', 'pattern'))
  500.         self.assertSetEqual(set(dir(jsi.call_function('x'))) & attrs, attrs)
  502.         jsi = JSInterpreter('''
  503.         function x() { let a=/,,[/,913,/](,)}/i; return a; }
  504.         ''')
  505.         self.assertEqual(jsi.call_function('x').flags & ~re.U, re.I)
  507.         jsi = JSInterpreter(r'''
  508.         function x() { let a="data-name".replace("data-", ""); return a }
  509.         ''')
  510.         self.assertEqual(jsi.call_function('x'), 'name')
  512.         jsi = JSInterpreter(r'''
  513.         function x() { let a="data-name".replace(new RegExp("^.+-"), ""); return a; }
  514.         ''')
  515.         self.assertEqual(jsi.call_function('x'), 'name')
  517.         jsi = JSInterpreter(r'''
  518.         function x() { let a="data-name".replace(/^.+-/, ""); return a; }
  519.         ''')
  520.         self.assertEqual(jsi.call_function('x'), 'name')
  522.         jsi = JSInterpreter(r'''
  523.         function x() { let a="data-name".replace(/a/g, "o"); return a; }
  524.         ''')
  525.         self.assertEqual(jsi.call_function('x'), 'doto-nome')
  527.         jsi = JSInterpreter(r'''
  528.         function x() { let a="data-name".replaceAll("a", "o"); return a; }
  529.         ''')
  530.         self.assertEqual(jsi.call_function('x'), 'doto-nome')
  532.         jsi = JSInterpreter(r'''
  533.         function x() { let a=[/[)\\]/]; return a[0]; }
  534.         ''')
  535.         self.assertEqual(jsi.call_function('x').pattern, r'[)\\]')
  537.         """  # fails
  538.         jsi = JSInterpreter(r'''
  539.         function x() { let a=100; a/=/[0-9]+/.exec('divide by 20 today')[0]; }
  540.         ''')
  541.         self.assertEqual(jsi.call_function('x'), 5)
  542.         """
  544.     def test_char_code_at(self):
  545.         jsi = JSInterpreter('function x(i){return "test".charCodeAt(i)}')
  546.         self.assertEqual(jsi.call_function('x', 0), 116)
  547.         self.assertEqual(jsi.call_function('x', 1), 101)
  548.         self.assertEqual(jsi.call_function('x', 2), 115)
  549.         self.assertEqual(jsi.call_function('x', 3), 116)
  550.         self.assertEqual(jsi.call_function('x', 4), None)
  551.         self.assertEqual(jsi.call_function('x', 'not_a_number'), 116)
  553.     def test_bitwise_operators_overflow(self):
  554.         jsi = JSInterpreter('function x(){return -524999584 << 5}')
  555.         self.assertEqual(jsi.call_function('x'), 379882496)
  557.         jsi = JSInterpreter('function x(){return 1236566549 << 5}')
  558.         self.assertEqual(jsi.call_function('x'), 915423904)
  560.     def test_bitwise_operators_madness(self):
  561.         jsi = JSInterpreter('function x(){return null << 5}')
  562.         self.assertEqual(jsi.call_function('x'), 0)
  564.         jsi = JSInterpreter('function x(){return undefined >> 5}')
  565.         self.assertEqual(jsi.call_function('x'), 0)
  567.         jsi = JSInterpreter('function x(){return 42 << NaN}')
  568.         self.assertEqual(jsi.call_function('x'), 42)
  570.         jsi = JSInterpreter('function x(){return 42 << Infinity}')
  571.         self.assertEqual(jsi.call_function('x'), 42)
  573.     def test_32066(self):
  574.         jsi = JSInterpreter("function x(){return Math.pow(3, 5) + new Date('1970-01-01T08:01:42.000+08:00') / 1000 * -239 - -24205;}")
  575.         self.assertEqual(jsi.call_function('x'), 70)
  577.     def test_unary_operators(self):
  578.         jsi = JSInterpreter('function f(){return 2  -  - - 2;}')
  579.         self.assertEqual(jsi.call_function('f'), 0)
  580.         # fails
  581.         # jsi = JSInterpreter('function f(){return 2 + - + - - 2;}')
  582.         # self.assertEqual(jsi.call_function('f'), 0)
  584.     """ # fails so far
  585.     def test_packed(self):
  586.         jsi = JSInterpreter('''function x(p,a,c,k,e,d){while(c--)if(k[c])p=p.replace(new RegExp('\\b'+c.toString(a)+'\\b','g'),k[c]);return p}''')
  587.         self.assertEqual(jsi.call_function('x', '''h 7=g("1j");7.7h({7g:[{33:"w://7f-7e-7d-7c.v.7b/7a/79/78/77/76.74?t=73&s=2s&e=72&f=2t&71=70.0.0.1&6z=6y&6x=6w"}],6v:"w://32.v.u/6u.31",16:"r%",15:"r%",6t:"6s",6r:"",6q:"l",6p:"l",6o:"6n",6m:\'6l\',6k:"6j",9:[{33:"/2u?b=6i&n=50&6h=w://32.v.u/6g.31",6f:"6e"}],1y:{6d:1,6c:\'#6b\',6a:\'#69\',68:"67",66:30,65:r,},"64":{63:"%62 2m%m%61%5z%5y%5x.u%5w%5v%5u.2y%22 2k%m%1o%22 5t%m%1o%22 5s%m%1o%22 2j%m%5r%22 16%m%5q%22 15%m%5p%22 5o%2z%5n%5m%2z",5l:"w://v.u/d/1k/5k.2y",5j:[]},\'5i\':{"5h":"5g"},5f:"5e",5d:"w://v.u",5c:{},5b:l,1x:[0.25,0.50,0.75,1,1.25,1.5,2]});h 1m,1n,5a;h 59=0,58=0;h 7=g("1j");h 2x=0,57=0,56=0;$.55({54:{\'53-52\':\'2i-51\'}});7.j(\'4z\',6(x){c(5>0&&x.1l>=5&&1n!=1){1n=1;$(\'q.4y\').4x(\'4w\')}});7.j(\'13\',6(x){2x=x.1l});7.j(\'2g\',6(x){2w(x)});7.j(\'4v\',6(){$(\'q.2v\').4u()});6 2w(x){$(\'q.2v\').4t();c(1m)19;1m=1;17=0;c(4s.4r===l){17=1}$.4q(\'/2u?b=4p&2l=1k&4o=2t-4n-4m-2s-4l&4k=&4j=&4i=&17=\'+17,6(2r){$(\'#4h\').4g(2r)});$(\'.3-8-4f-4e:4d("4c")\').2h(6(e){2q();g().4b(0);g().4a(l)});6 2q(){h $14=$("<q />").2p({1l:"49",16:"r%",15:"r%",48:0,2n:0,2o:47,46:"45(10%, 10%, 10%, 0.4)","44-43":"42"});$("<41 />").2p({16:"60%",15:"60%",2o:40,"3z-2n":"3y"}).3x({\'2m\':\'/?b=3w&2l=1k\',\'2k\':\'0\',\'2j\':\'2i\'}).2f($14);$14.2h(6(){$(3v).3u();g().2g()});$14.2f($(\'#1j\'))}g().13(0);}6 3t(){h 9=7.1b(2e);2d.2c(9);c(9.n>1){1r(i=0;i<9.n;i++){c(9[i].1a==2e){2d.2c(\'!!=\'+i);7.1p(i)}}}}7.j(\'3s\',6(){g().1h("/2a/3r.29","3q 10 28",6(){g().13(g().27()+10)},"2b");$("q[26=2b]").23().21(\'.3-20-1z\');g().1h("/2a/3p.29","3o 10 28",6(){h 12=g().27()-10;c(12<0)12=0;g().13(12)},"24");$("q[26=24]").23().21(\'.3-20-1z\');});6 1i(){}7.j(\'3n\',6(){1i()});7.j(\'3m\',6(){1i()});7.j("k",6(y){h 9=7.1b();c(9.n<2)19;$(\'.3-8-3l-3k\').3j(6(){$(\'#3-8-a-k\').1e(\'3-8-a-z\');$(\'.3-a-k\').p(\'o-1f\',\'11\')});7.1h("/3i/3h.3g","3f 3e",6(){$(\'.3-1w\').3d(\'3-8-1v\');$(\'.3-8-1y, .3-8-1x\').p(\'o-1g\',\'11\');c($(\'.3-1w\').3c(\'3-8-1v\')){$(\'.3-a-k\').p(\'o-1g\',\'l\');$(\'.3-a-k\').p(\'o-1f\',\'l\');$(\'.3-8-a\').1e(\'3-8-a-z\');$(\'.3-8-a:1u\').3b(\'3-8-a-z\')}3a{$(\'.3-a-k\').p(\'o-1g\',\'11\');$(\'.3-a-k\').p(\'o-1f\',\'11\');$(\'.3-8-a:1u\').1e(\'3-8-a-z\')}},"39");7.j("38",6(y){1d.37(\'1c\',y.9[y.36].1a)});c(1d.1t(\'1c\')){35("1s(1d.1t(\'1c\'));",34)}});h 18;6 1s(1q){h 9=7.1b();c(9.n>1){1r(i=0;i<9.n;i++){c(9[i].1a==1q){c(i==18){19}18=i;7.1p(i)}}}}',36,270,'|||jw|||function|player|settings|tracks|submenu||if||||jwplayer|var||on|audioTracks|true|3D|length|aria|attr|div|100|||sx|filemoon|https||event|active||false|tt|seek|dd|height|width|adb|current_audio|return|name|getAudioTracks|default_audio|localStorage|removeClass|expanded|checked|addButton|callMeMaybe|vplayer|0fxcyc2ajhp1|position|vvplay|vvad|220|setCurrentAudioTrack|audio_name|for|audio_set|getItem|last|open|controls|playbackRates|captions|rewind|icon|insertAfter||detach|ff00||button|getPosition|sec|png|player8|ff11|log|console|track_name|appendTo|play|click|no|scrolling|frameborder|file_code|src|top|zIndex|css|showCCform|data|1662367683|383371|dl|video_ad|doPlay|prevt|mp4|3E||jpg|thumbs|file|300|setTimeout|currentTrack|setItem|audioTrackChanged|dualSound|else|addClass|hasClass|toggleClass|Track|Audio|svg|dualy|images|mousedown|buttons|topbar|playAttemptFailed|beforePlay|Rewind|fr|Forward|ff|ready|set_audio_track|remove|this|upload_srt|prop|50px|margin|1000001|iframe|center|align|text|rgba|background|1000000|left|absolute|pause|setCurrentCaptions|Upload|contains|item|content|html|fviews|referer|prem|embed|3e57249ef633e0d03bf76ceb8d8a4b65|216|83|hash|view|get|TokenZir|window|hide|show|complete|slow|fadeIn|video_ad_fadein|time||cache|Cache|Content|headers|ajaxSetup|v2done|tott|vastdone2|vastdone1|vvbefore|playbackRateControls|cast|aboutlink|FileMoon|abouttext|UHD|1870|qualityLabels|sites|GNOME_POWER|link|2Fiframe|3C|allowfullscreen|22360|22640|22no|marginheight|marginwidth|2FGNOME_POWER|2F0fxcyc2ajhp1|2Fe|2Ffilemoon|2F|3A||22https|3Ciframe|code|sharing|fontOpacity|backgroundOpacity|Tahoma|fontFamily|303030|backgroundColor|FFFFFF|color|userFontScale|thumbnails|kind|0fxcyc2ajhp10000|url|get_slides|start|startparam|none|preload|html5|primary|hlshtml|androidhls|duration|uniform|stretching|0fxcyc2ajhp1_xt|image|2048|sp|6871|asn|127|srv|43200|_g3XlBcu2lmD9oDexD2NLWSmah2Nu3XcDrl93m9PwXY|m3u8||master|0fxcyc2ajhp1_x|00076|01|hls2|to|s01|delivery|storage|moon|sources|setup'''.split('|')))
  588.     """
  591. if __name__ == '__main__':
  592.     unittest.main()