#!/usr/bin/env python from __future__ import unicode_literals # Allow direct execution import os import sys import unittest sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__)))) import math import re from youtube_dl.jsinterp import JS_Undefined, JSInterpreter class TestJSInterpreter(unittest.TestCase): def test_basic(self): jsi = JSInterpreter('function x(){;}') self.assertEqual(jsi.call_function('x'), None) self.assertEqual(repr(jsi.extract_function('x')), 'F<x>') jsi = JSInterpreter('function x3(){return 42;}') self.assertEqual(jsi.call_function('x3'), 42) jsi = JSInterpreter('function x3(){42}') self.assertEqual(jsi.call_function('x3'), None) jsi = JSInterpreter('var x5 = function(){return 42;}') self.assertEqual(jsi.call_function('x5'), 42) def test_calc(self): jsi = JSInterpreter('function x4(a){return 2*a+1;}') self.assertEqual(jsi.call_function('x4', 3), 7) def test_add(self): jsi = JSInterpreter('function f(){return 42 + 7;}') self.assertEqual(jsi.call_function('f'), 49) jsi = JSInterpreter('function f(){return 42 + undefined;}') self.assertTrue(math.isnan(jsi.call_function('f'))) jsi = JSInterpreter('function f(){return 42 + null;}') self.assertEqual(jsi.call_function('f'), 42) def test_sub(self): jsi = JSInterpreter('function f(){return 42 - 7;}') self.assertEqual(jsi.call_function('f'), 35) jsi = JSInterpreter('function f(){return 42 - undefined;}') self.assertTrue(math.isnan(jsi.call_function('f'))) jsi = JSInterpreter('function f(){return 42 - null;}') self.assertEqual(jsi.call_function('f'), 42) def test_mul(self): jsi = JSInterpreter('function f(){return 42 * 7;}') self.assertEqual(jsi.call_function('f'), 294) jsi = JSInterpreter('function f(){return 42 * undefined;}') self.assertTrue(math.isnan(jsi.call_function('f'))) jsi = JSInterpreter('function f(){return 42 * null;}') self.assertEqual(jsi.call_function('f'), 0) def test_div(self): jsi = JSInterpreter('function f(a, b){return a / b;}') self.assertTrue(math.isnan(jsi.call_function('f', 0, 0))) self.assertTrue(math.isnan(jsi.call_function('f', JS_Undefined, 1))) self.assertTrue(math.isinf(jsi.call_function('f', 2, 0))) self.assertEqual(jsi.call_function('f', 0, 3), 0) def test_mod(self): jsi = JSInterpreter('function f(){return 42 % 7;}') self.assertEqual(jsi.call_function('f'), 0) jsi = JSInterpreter('function f(){return 42 % 0;}') self.assertTrue(math.isnan(jsi.call_function('f'))) jsi = JSInterpreter('function f(){return 42 % undefined;}') self.assertTrue(math.isnan(jsi.call_function('f'))) def test_exp(self): jsi = JSInterpreter('function f(){return 42 ** 2;}') self.assertEqual(jsi.call_function('f'), 1764) jsi = JSInterpreter('function f(){return 42 ** undefined;}') self.assertTrue(math.isnan(jsi.call_function('f'))) jsi = JSInterpreter('function f(){return 42 ** null;}') self.assertEqual(jsi.call_function('f'), 1) jsi = JSInterpreter('function f(){return undefined ** 42;}') self.assertTrue(math.isnan(jsi.call_function('f'))) def test_empty_return(self): jsi = JSInterpreter('function f(){return; y()}') self.assertEqual(jsi.call_function('f'), None) def test_morespace(self): jsi = JSInterpreter('function x (a) { return 2 * a + 1 ; }') self.assertEqual(jsi.call_function('x', 3), 7) jsi = JSInterpreter('function f () { x = 2 ; return x; }') self.assertEqual(jsi.call_function('f'), 2) def test_strange_chars(self): jsi = JSInterpreter('function $_xY1 ($_axY1) { var $_axY2 = $_axY1 + 1; return $_axY2; }') self.assertEqual(jsi.call_function('$_xY1', 20), 21) def test_operators(self): jsi = JSInterpreter('function f(){return 1 << 5;}') self.assertEqual(jsi.call_function('f'), 32) jsi = JSInterpreter('function f(){return 2 ** 5}') self.assertEqual(jsi.call_function('f'), 32) jsi = JSInterpreter('function f(){return 19 & 21;}') self.assertEqual(jsi.call_function('f'), 17) jsi = JSInterpreter('function f(){return 11 >> 2;}') self.assertEqual(jsi.call_function('f'), 2) jsi = JSInterpreter('function f(){return []? 2+3: 4;}') self.assertEqual(jsi.call_function('f'), 5) jsi = JSInterpreter('function f(){return 1 == 2}') self.assertEqual(jsi.call_function('f'), False) jsi = JSInterpreter('function f(){return 0 && 1 || 2;}') self.assertEqual(jsi.call_function('f'), 2) jsi = JSInterpreter('function f(){return 0 ?? 42;}') self.assertEqual(jsi.call_function('f'), 0) jsi = JSInterpreter('function f(){return "life, the universe and everything" < 42;}') self.assertFalse(jsi.call_function('f')) def test_array_access(self): jsi = JSInterpreter('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}') self.assertEqual(jsi.call_function('f'), [5, 2, 7]) def test_parens(self): jsi = JSInterpreter('function f(){return (1) + (2) * ((( (( (((((3)))))) )) ));}') self.assertEqual(jsi.call_function('f'), 7) jsi = JSInterpreter('function f(){return (1 + 2) * 3;}') self.assertEqual(jsi.call_function('f'), 9) def test_quotes(self): jsi = JSInterpreter(r'function f(){return "a\"\\("}') self.assertEqual(jsi.call_function('f'), r'a"\(') def test_assignments(self): jsi = JSInterpreter('function f(){var x = 20; x = 30 + 1; return x;}') self.assertEqual(jsi.call_function('f'), 31) jsi = JSInterpreter('function f(){var x = 20; x += 30 + 1; return x;}') self.assertEqual(jsi.call_function('f'), 51) jsi = JSInterpreter('function f(){var x = 20; x -= 30 + 1; return x;}') self.assertEqual(jsi.call_function('f'), -11) def test_comments(self): 'Skipping: Not yet fully implemented' return jsi = JSInterpreter(''' function x() { var x = /* 1 + */ 2; var y = /* 30 * 40 */ 50; return x + y; } ''') self.assertEqual(jsi.call_function('x'), 52) jsi = JSInterpreter(''' function f() { var x = "/*"; var y = 1 /* comment */ + 2; return y; } ''') self.assertEqual(jsi.call_function('f'), 3) def test_precedence(self): jsi = JSInterpreter(''' function x() { var a = [10, 20, 30, 40, 50]; var b = 6; a[0]=a[b%a.length]; return a; }''') self.assertEqual(jsi.call_function('x'), [20, 20, 30, 40, 50]) def test_builtins(self): jsi = JSInterpreter(''' function x() { return NaN } ''') self.assertTrue(math.isnan(jsi.call_function('x'))) def test_Date(self): jsi = JSInterpreter(''' function x(dt) { return new Date(dt) - 0; } ''') self.assertEqual(jsi.call_function('x', 'Wednesday 31 December 1969 18:01:26 MDT'), 86000) # date format m/d/y self.assertEqual(jsi.call_function('x', '12/31/1969 18:01:26 MDT'), 86000) # epoch 0 self.assertEqual(jsi.call_function('x', '1 January 1970 00:00:00 UTC'), 0) def test_call(self): jsi = JSInterpreter(''' function x() { return 2; } function y(a) { return x() + (a?a:0); } function z() { return y(3); } ''') self.assertEqual(jsi.call_function('z'), 5) self.assertEqual(jsi.call_function('y'), 2) def test_if(self): jsi = JSInterpreter(''' function x() { let a = 9; if (0==0) {a++} return a }''') self.assertEqual(jsi.call_function('x'), 10) jsi = JSInterpreter(''' function x() { if (0==0) {return 10} }''') self.assertEqual(jsi.call_function('x'), 10) jsi = JSInterpreter(''' function x() { if (0!=0) {return 1} else {return 10} }''') self.assertEqual(jsi.call_function('x'), 10) """ # Unsupported jsi = JSInterpreter(''' function x() { if (0!=0) return 1; else {return 10} }''') self.assertEqual(jsi.call_function('x'), 10) """ def test_elseif(self): jsi = JSInterpreter(''' function x() { if (0!=0) {return 1} else if (1==0) {return 2} else {return 10} }''') self.assertEqual(jsi.call_function('x'), 10) """ # Unsupported jsi = JSInterpreter(''' function x() { if (0!=0) return 1; else if (1==0) {return 2} else {return 10} }''') self.assertEqual(jsi.call_function('x'), 10) # etc """ 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++) {a++} return a } ''') self.assertEqual(jsi.call_function('x'), 10) def test_while_loop(self): # function x() { a=0; while (a<10) {a++} a } jsi = JSInterpreter(''' function x() { a=0; while (a<10) {a++} return 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_switch_default(self): jsi = JSInterpreter(''' function x(f) { switch(f){ case 2: f+=2; default: f-=1; case 5: case 6: f+=6; case 0: break; case 1: f+=1; } return f } ''') self.assertEqual(jsi.call_function('x', 1), 2) self.assertEqual(jsi.call_function('x', 5), 11) self.assertEqual(jsi.call_function('x', 9), 14) def test_try(self): jsi = JSInterpreter(''' function x() { try{return 10} catch(e){return 5} } ''') self.assertEqual(jsi.call_function('x'), 10) def test_catch(self): jsi = JSInterpreter(''' function x() { try{throw 10} catch(e){return 5} } ''') self.assertEqual(jsi.call_function('x'), 5) def test_finally(self): jsi = JSInterpreter(''' function x() { try{throw 10} finally {return 42} } ''') self.assertEqual(jsi.call_function('x'), 42) jsi = JSInterpreter(''' function x() { try{throw 10} catch(e){return 5} finally {return 42} } ''') self.assertEqual(jsi.call_function('x'), 42) def test_nested_try(self): jsi = JSInterpreter(''' function x() {try { try{throw 10} finally {throw 42} } catch(e){return 5} } ''') self.assertEqual(jsi.call_function('x'), 5) def test_for_loop_continue(self): jsi = JSInterpreter(''' function x() { a=0; for (i=0; i-10; i++) { continue; a++ } return 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++ } return a } ''') self.assertEqual(jsi.call_function('x'), 0) def test_for_loop_try(self): jsi = JSInterpreter(''' function x() { for (i=0; i-10; i++) { try { if (i == 5) throw i} catch {return 10} finally {break} }; return 42 } ''') self.assertEqual(jsi.call_function('x'), 42) def test_literal_list(self): jsi = JSInterpreter(''' function x() { return [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) jsi = JSInterpreter(''' function x() { a=5; return (a -= 1, a+=3, a); } ''') self.assertEqual(jsi.call_function('x'), 7) jsi = JSInterpreter(''' function x() { return (l=[0,1,2,3], function(a, b){return a+b})((l[1], l[2]), l[3]) } ''') self.assertEqual(jsi.call_function('x'), 5) def test_void(self): jsi = JSInterpreter(''' function x() { return void 42; } ''') self.assertEqual(jsi.call_function('x'), None) def test_return_function(self): jsi = JSInterpreter(''' function x() { return [1, function(){return 1}][1] } ''') self.assertEqual(jsi.call_function('x')([]), 1) def test_null(self): jsi = JSInterpreter(''' function x() { return null; } ''') self.assertIs(jsi.call_function('x'), None) jsi = JSInterpreter(''' function x() { return [null > 0, null < 0, null == 0, null === 0]; } ''') self.assertEqual(jsi.call_function('x'), [False, False, False, False]) jsi = JSInterpreter(''' function x() { return [null >= 0, null <= 0]; } ''') self.assertEqual(jsi.call_function('x'), [True, True]) def test_undefined(self): jsi = JSInterpreter(''' function x() { return undefined === undefined; } ''') self.assertTrue(jsi.call_function('x')) jsi = JSInterpreter(''' function x() { return undefined; } ''') self.assertIs(jsi.call_function('x'), JS_Undefined) jsi = JSInterpreter(''' function x() { let v; return v; } ''') self.assertIs(jsi.call_function('x'), JS_Undefined) jsi = JSInterpreter(''' function x() { return [undefined === undefined, undefined == undefined, undefined < undefined, undefined > undefined]; } ''') self.assertEqual(jsi.call_function('x'), [True, True, False, False]) jsi = JSInterpreter(''' function x() { return [undefined === 0, undefined == 0, undefined < 0, undefined > 0]; } ''') self.assertEqual(jsi.call_function('x'), [False, False, False, False]) jsi = JSInterpreter(''' function x() { return [undefined >= 0, undefined <= 0]; } ''') self.assertEqual(jsi.call_function('x'), [False, False]) jsi = JSInterpreter(''' function x() { return [undefined > null, undefined < null, undefined == null, undefined === null]; } ''') self.assertEqual(jsi.call_function('x'), [False, False, True, False]) jsi = JSInterpreter(''' function x() { return [undefined === null, undefined == null, undefined < null, undefined > null]; } ''') self.assertEqual(jsi.call_function('x'), [False, True, False, False]) jsi = JSInterpreter(''' function x() { let v; return [42+v, v+42, v**42, 42**v, 0**v]; } ''') for y in jsi.call_function('x'): self.assertTrue(math.isnan(y)) jsi = JSInterpreter(''' function x() { let v; return v**0; } ''') self.assertEqual(jsi.call_function('x'), 1) jsi = JSInterpreter(''' function x() { let v; return [v>42, v<=42, v&&42, 42&&v]; } ''') self.assertEqual(jsi.call_function('x'), [False, False, JS_Undefined, JS_Undefined]) jsi = JSInterpreter('function x(){return undefined ?? 42; }') self.assertEqual(jsi.call_function('x'), 42) def test_object(self): jsi = JSInterpreter(''' function x() { return {}; } ''') self.assertEqual(jsi.call_function('x'), {}) jsi = JSInterpreter(''' function x() { let a = {m1: 42, m2: 0 }; return [a["m1"], a.m2]; } ''') self.assertEqual(jsi.call_function('x'), [42, 0]) jsi = JSInterpreter(''' function x() { let a; return a?.qq; } ''') self.assertIs(jsi.call_function('x'), JS_Undefined) jsi = JSInterpreter(''' function x() { let a = {m1: 42, m2: 0 }; return a?.qq; } ''') self.assertIs(jsi.call_function('x'), JS_Undefined) def test_regex(self): jsi = JSInterpreter(''' function x() { let a=/,,[/,913,/](,)}/; } ''') self.assertIs(jsi.call_function('x'), None) jsi = JSInterpreter(''' function x() { let a=/,,[/,913,/](,)}/; "".replace(a, ""); return a; } ''') attrs = set(('findall', 'finditer', 'match', 'scanner', 'search', 'split', 'sub', 'subn')) if sys.version_info >= (2, 7): # documented for 2.6 but may not be found attrs.update(('flags', 'groupindex', 'groups', 'pattern')) self.assertSetEqual(set(dir(jsi.call_function('x'))) & attrs, attrs) jsi = JSInterpreter(''' function x() { let a=/,,[/,913,/](,)}/i; return a; } ''') self.assertEqual(jsi.call_function('x').flags & ~re.U, re.I) jsi = JSInterpreter(r''' function x() { let a="data-name".replace("data-", ""); return a } ''') self.assertEqual(jsi.call_function('x'), 'name') jsi = JSInterpreter(r''' function x() { let a="data-name".replace(new RegExp("^.+-"), ""); return a; } ''') self.assertEqual(jsi.call_function('x'), 'name') jsi = JSInterpreter(r''' function x() { let a="data-name".replace(/^.+-/, ""); return a; } ''') self.assertEqual(jsi.call_function('x'), 'name') jsi = JSInterpreter(r''' function x() { let a="data-name".replace(/a/g, "o"); return a; } ''') self.assertEqual(jsi.call_function('x'), 'doto-nome') jsi = JSInterpreter(r''' function x() { let a="data-name".replaceAll("a", "o"); return a; } ''') self.assertEqual(jsi.call_function('x'), 'doto-nome') jsi = JSInterpreter(r''' function x() { let a=[/[)\\]/]; return a[0]; } ''') self.assertEqual(jsi.call_function('x').pattern, r'[)\\]') """ # fails jsi = JSInterpreter(r''' function x() { let a=100; a/=/[0-9]+/.exec('divide by 20 today')[0]; } ''') self.assertEqual(jsi.call_function('x'), 5) """ def test_char_code_at(self): jsi = JSInterpreter('function x(i){return "test".charCodeAt(i)}') self.assertEqual(jsi.call_function('x', 0), 116) self.assertEqual(jsi.call_function('x', 1), 101) self.assertEqual(jsi.call_function('x', 2), 115) self.assertEqual(jsi.call_function('x', 3), 116) self.assertEqual(jsi.call_function('x', 4), None) self.assertEqual(jsi.call_function('x', 'not_a_number'), 116) def test_bitwise_operators_overflow(self): jsi = JSInterpreter('function x(){return -524999584 << 5}') self.assertEqual(jsi.call_function('x'), 379882496) jsi = JSInterpreter('function x(){return 1236566549 << 5}') self.assertEqual(jsi.call_function('x'), 915423904) def test_bitwise_operators_madness(self): jsi = JSInterpreter('function x(){return null << 5}') self.assertEqual(jsi.call_function('x'), 0) jsi = JSInterpreter('function x(){return undefined >> 5}') self.assertEqual(jsi.call_function('x'), 0) jsi = JSInterpreter('function x(){return 42 << NaN}') self.assertEqual(jsi.call_function('x'), 42) jsi = JSInterpreter('function x(){return 42 << Infinity}') self.assertEqual(jsi.call_function('x'), 42) def test_32066(self): jsi = JSInterpreter("function x(){return Math.pow(3, 5) + new Date('1970-01-01T08:01:42.000+08:00') / 1000 * -239 - -24205;}") self.assertEqual(jsi.call_function('x'), 70) def test_unary_operators(self): jsi = JSInterpreter('function f(){return 2 - - - 2;}') self.assertEqual(jsi.call_function('f'), 0) # fails # jsi = JSInterpreter('function f(){return 2 + - + - - 2;}') # self.assertEqual(jsi.call_function('f'), 0) """ # fails so far def test_packed(self): 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}''') 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 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""" if __name__ == '__main__': unittest.main()