youtube-dl

Another place where youtube-dl lives on
git clone git://git.oshgnacknak.de/youtube-dl.git
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test_jsinterp.py (3839B)

      1 #!/usr/bin/env python
      2 
      3 from __future__ import unicode_literals
      4 
      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__))))
     10 
     11 from youtube_dl.jsinterp import JSInterpreter
     12 
     13 
     14 class TestJSInterpreter(unittest.TestCase):
     15     def test_basic(self):
     16         jsi = JSInterpreter('function x(){;}')
     17         self.assertEqual(jsi.call_function('x'), None)
     18 
     19         jsi = JSInterpreter('function x3(){return 42;}')
     20         self.assertEqual(jsi.call_function('x3'), 42)
     21 
     22         jsi = JSInterpreter('var x5 = function(){return 42;}')
     23         self.assertEqual(jsi.call_function('x5'), 42)
     24 
     25     def test_calc(self):
     26         jsi = JSInterpreter('function x4(a){return 2*a+1;}')
     27         self.assertEqual(jsi.call_function('x4', 3), 7)
     28 
     29     def test_empty_return(self):
     30         jsi = JSInterpreter('function f(){return; y()}')
     31         self.assertEqual(jsi.call_function('f'), None)
     32 
     33     def test_morespace(self):
     34         jsi = JSInterpreter('function x (a) { return 2 * a + 1 ; }')
     35         self.assertEqual(jsi.call_function('x', 3), 7)
     36 
     37         jsi = JSInterpreter('function f () { x =  2  ; return x; }')
     38         self.assertEqual(jsi.call_function('f'), 2)
     39 
     40     def test_strange_chars(self):
     41         jsi = JSInterpreter('function $_xY1 ($_axY1) { var $_axY2 = $_axY1 + 1; return $_axY2; }')
     42         self.assertEqual(jsi.call_function('$_xY1', 20), 21)
     43 
     44     def test_operators(self):
     45         jsi = JSInterpreter('function f(){return 1 << 5;}')
     46         self.assertEqual(jsi.call_function('f'), 32)
     47 
     48         jsi = JSInterpreter('function f(){return 19 & 21;}')
     49         self.assertEqual(jsi.call_function('f'), 17)
     50 
     51         jsi = JSInterpreter('function f(){return 11 >> 2;}')
     52         self.assertEqual(jsi.call_function('f'), 2)
     53 
     54     def test_array_access(self):
     55         jsi = JSInterpreter('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2] = 7; return x;}')
     56         self.assertEqual(jsi.call_function('f'), [5, 2, 7])
     57 
     58     def test_parens(self):
     59         jsi = JSInterpreter('function f(){return (1) + (2) * ((( (( (((((3)))))) )) ));}')
     60         self.assertEqual(jsi.call_function('f'), 7)
     61 
     62         jsi = JSInterpreter('function f(){return (1 + 2) * 3;}')
     63         self.assertEqual(jsi.call_function('f'), 9)
     64 
     65     def test_assignments(self):
     66         jsi = JSInterpreter('function f(){var x = 20; x = 30 + 1; return x;}')
     67         self.assertEqual(jsi.call_function('f'), 31)
     68 
     69         jsi = JSInterpreter('function f(){var x = 20; x += 30 + 1; return x;}')
     70         self.assertEqual(jsi.call_function('f'), 51)
     71 
     72         jsi = JSInterpreter('function f(){var x = 20; x -= 30 + 1; return x;}')
     73         self.assertEqual(jsi.call_function('f'), -11)
     74 
     75     def test_comments(self):
     76         'Skipping: Not yet fully implemented'
     77         return
     78         jsi = JSInterpreter('''
     79         function x() {
     80             var x = /* 1 + */ 2;
     81             var y = /* 30
     82             * 40 */ 50;
     83             return x + y;
     84         }
     85         ''')
     86         self.assertEqual(jsi.call_function('x'), 52)
     87 
     88         jsi = JSInterpreter('''
     89         function f() {
     90             var x = "/*";
     91             var y = 1 /* comment */ + 2;
     92             return y;
     93         }
     94         ''')
     95         self.assertEqual(jsi.call_function('f'), 3)
     96 
     97     def test_precedence(self):
     98         jsi = JSInterpreter('''
     99         function x() {
    100             var a = [10, 20, 30, 40, 50];
    101             var b = 6;
    102             a[0]=a[b%a.length];
    103             return a;
    104         }''')
    105         self.assertEqual(jsi.call_function('x'), [20, 20, 30, 40, 50])
    106 
    107     def test_call(self):
    108         jsi = JSInterpreter('''
    109         function x() { return 2; }
    110         function y(a) { return x() + a; }
    111         function z() { return y(3); }
    112         ''')
    113         self.assertEqual(jsi.call_function('z'), 5)
    114 
    115 
    116 if __name__ == '__main__':
    117     unittest.main()