X-Git-Url: https://jfr.im/git/yt-dlp.git/blobdiff_plain/6789defea9b1fc7ff631e9da8a281504167ced10..bef9a9e5361fd7a72e21d0f1a8c8afb70d89e8c5:/test/test_jsinterp.py diff --git a/test/test_jsinterp.py b/test/test_jsinterp.py index b91b8c492..86928a6a0 100644 --- a/test/test_jsinterp.py +++ b/test/test_jsinterp.py @@ -1,94 +1,379 @@ -#!/usr/bin/env python - -from __future__ import unicode_literals +#!/usr/bin/env python3 # Allow direct execution import os import sys import unittest + sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__)))) -from youtube_dl.jsinterp import JSInterpreter +import math + +from yt_dlp.jsinterp import JS_Undefined, JSInterpreter + + +class NaN: + pass class TestJSInterpreter(unittest.TestCase): + def _test(self, jsi_or_code, expected, func='f', args=()): + if isinstance(jsi_or_code, str): + jsi_or_code = JSInterpreter(jsi_or_code) + got = jsi_or_code.call_function(func, *args) + if expected is NaN: + self.assertTrue(math.isnan(got), f'{got} is not NaN') + else: + self.assertEqual(got, expected) + def test_basic(self): - jsi = JSInterpreter('function x(){;}') - self.assertEqual(jsi.call_function('x'), None) + jsi = JSInterpreter('function f(){;}') + self.assertEqual(repr(jsi.extract_function('f')), 'F') + self._test(jsi, None) + + self._test('function f(){return 42;}', 42) + self._test('function f(){42}', None) + self._test('var f = function(){return 42;}', 42) + + def test_add(self): + self._test('function f(){return 42 + 7;}', 49) + self._test('function f(){return 42 + undefined;}', NaN) + self._test('function f(){return 42 + null;}', 42) - jsi = JSInterpreter('function x3(){return 42;}') - self.assertEqual(jsi.call_function('x3'), 42) + def test_sub(self): + self._test('function f(){return 42 - 7;}', 35) + self._test('function f(){return 42 - undefined;}', NaN) + self._test('function f(){return 42 - null;}', 42) + + def test_mul(self): + self._test('function f(){return 42 * 7;}', 294) + self._test('function f(){return 42 * undefined;}', NaN) + self._test('function f(){return 42 * null;}', 0) + + def test_div(self): + jsi = JSInterpreter('function f(a, b){return a / b;}') + self._test(jsi, NaN, args=(0, 0)) + self._test(jsi, NaN, args=(JS_Undefined, 1)) + self._test(jsi, float('inf'), args=(2, 0)) + self._test(jsi, 0, args=(0, 3)) + + def test_mod(self): + self._test('function f(){return 42 % 7;}', 0) + self._test('function f(){return 42 % 0;}', NaN) + self._test('function f(){return 42 % undefined;}', NaN) + + def test_exp(self): + self._test('function f(){return 42 ** 2;}', 1764) + self._test('function f(){return 42 ** undefined;}', NaN) + self._test('function f(){return 42 ** null;}', 1) + self._test('function f(){return undefined ** 42;}', NaN) def test_calc(self): - jsi = JSInterpreter('function x4(a){return 2*a+1;}') - self.assertEqual(jsi.call_function('x4', 3), 7) + self._test('function f(a){return 2*a+1;}', 7, args=[3]) def test_empty_return(self): - jsi = JSInterpreter('function f(){return; y()}') - self.assertEqual(jsi.call_function('f'), None) + self._test('function f(){return; y()}', 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) + self._test('function f (a) { return 2 * a + 1 ; }', 7, args=[3]) + self._test('function f () { x = 2 ; return x; }', 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) + self._test('function $_xY1 ($_axY1) { var $_axY2 = $_axY1 + 1; return $_axY2; }', + 21, args=[20], func='$_xY1') def test_operators(self): - jsi = JSInterpreter('function f(){return 1 << 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) + self._test('function f(){return 1 << 5;}', 32) + self._test('function f(){return 2 ** 5}', 32) + self._test('function f(){return 19 & 21;}', 17) + self._test('function f(){return 11 >> 2;}', 2) + self._test('function f(){return []? 2+3: 4;}', 5) + self._test('function f(){return 1 == 2}', False) + self._test('function f(){return 0 && 1 || 2;}', 2) + self._test('function f(){return 0 ?? 42;}', 0) + self._test('function f(){return "life, the universe and everything" < 42;}', False) def test_array_access(self): - jsi = JSInterpreter('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2] = 7; return x;}') - self.assertEqual(jsi.call_function('f'), [5, 2, 7]) + self._test('function f(){var x = [1,2,3]; x[0] = 4; x[0] = 5; x[2.0] = 7; return x;}', [5, 2, 7]) def test_parens(self): - jsi = JSInterpreter('function f(){return (1) + (2) * ((( (( (((((3)))))) )) ));}') - self.assertEqual(jsi.call_function('f'), 7) + self._test('function f(){return (1) + (2) * ((( (( (((((3)))))) )) ));}', 7) + self._test('function f(){return (1 + 2) * 3;}', 9) - jsi = JSInterpreter('function f(){return (1 + 2) * 3;}') - self.assertEqual(jsi.call_function('f'), 9) + def test_quotes(self): + self._test(R'function f(){return "a\"\\("}', 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) + self._test('function f(){var x = 20; x = 30 + 1; return x;}', 31) + self._test('function f(){var x = 20; x += 30 + 1; return x;}', 51) + self._test('function f(){var x = 20; x -= 30 + 1; return x;}', -11) + + @unittest.skip('Not implemented') + def test_comments(self): + self._test(''' + function f() { + var x = /* 1 + */ 2; + var y = /* 30 + * 40 */ 50; + return x + y; + } + ''', 52) + + self._test(''' + function f() { + var x = "/*"; + var y = 1 /* comment */ + 2; + return y; + } + ''', 3) - jsi = JSInterpreter('function f(){var x = 20; x += 30 + 1; return x;}') - self.assertEqual(jsi.call_function('f'), 51) + def test_precedence(self): + self._test(''' + function f() { + var a = [10, 20, 30, 40, 50]; + var b = 6; + a[0]=a[b%a.length]; + return a; + } + ''', [20, 20, 30, 40, 50]) - jsi = JSInterpreter('function f(){var x = 20; x -= 30 + 1; return x;}') - self.assertEqual(jsi.call_function('f'), -11) + def test_builtins(self): + self._test('function f() { return NaN }', NaN) - def test_comments(self): + def test_date(self): + self._test('function f() { return new Date("Wednesday 31 December 1969 18:01:26 MDT") - 0; }', 86000) + + jsi = JSInterpreter('function f(dt) { return new Date(dt) - 0; }') + self._test(jsi, 86000, args=['Wednesday 31 December 1969 18:01:26 MDT']) + self._test(jsi, 86000, args=['12/31/1969 18:01:26 MDT']) # m/d/y + self._test(jsi, 0, args=['1 January 1970 00:00:00 UTC']) + + def test_call(self): jsi = JSInterpreter(''' - function x() { - var x = /* 1 + */ 2; - var y = /* 30 - * 40 */ 50; - return x + y; - } + function x() { return 2; } + function y(a) { return x() + (a?a:0); } + function z() { return y(3); } ''') - self.assertEqual(jsi.call_function('x'), 52) + self._test(jsi, 5, func='z') + self._test(jsi, 2, func='y') - def test_precedence(self): + def test_if(self): + self._test(''' + function f() { + let a = 9; + if (0==0) {a++} + return a + } + ''', 10) + + self._test(''' + function f() { + if (0==0) {return 10} + } + ''', 10) + + self._test(''' + function f() { + if (0!=0) {return 1} + else {return 10} + } + ''', 10) + + """ # Unsupported + self._test(''' + function f() { + if (0!=0) {return 1} + else if (1==0) {return 2} + else {return 10} + } + ''', 10) + """ + + def test_for_loop(self): + self._test('function f() { a=0; for (i=0; i-10; i++) {a++} return a }', 10) + + def test_switch(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]) + function f(x) { switch(x){ + case 1:x+=1; + case 2:x+=2; + case 3:x+=3;break; + case 4:x+=4; + default:x=0; + } return x } + ''') + self._test(jsi, 7, args=[1]) + self._test(jsi, 6, args=[3]) + self._test(jsi, 0, args=[5]) + + def test_switch_default(self): + jsi = JSInterpreter(''' + function f(x) { switch(x){ + case 2: x+=2; + default: x-=1; + case 5: + case 6: x+=6; + case 0: break; + case 1: x+=1; + } return x } + ''') + self._test(jsi, 2, args=[1]) + self._test(jsi, 11, args=[5]) + self._test(jsi, 14, args=[9]) + + def test_try(self): + self._test('function f() { try{return 10} catch(e){return 5} }', 10) + + def test_catch(self): + self._test('function f() { try{throw 10} catch(e){return 5} }', 5) + + def test_finally(self): + self._test('function f() { try{throw 10} finally {return 42} }', 42) + self._test('function f() { try{throw 10} catch(e){return 5} finally {return 42} }', 42) + + def test_nested_try(self): + self._test(''' + function f() {try { + try{throw 10} finally {throw 42} + } catch(e){return 5} } + ''', 5) + + def test_for_loop_continue(self): + self._test('function f() { a=0; for (i=0; i-10; i++) { continue; a++ } return a }', 0) + + def test_for_loop_break(self): + self._test('function f() { a=0; for (i=0; i-10; i++) { break; a++ } return a }', 0) + + def test_for_loop_try(self): + self._test(''' + function f() { + for (i=0; i-10; i++) { try { if (i == 5) throw i} catch {return 10} finally {break} }; + return 42 } + ''', 42) + + def test_literal_list(self): + self._test('function f() { return [1, 2, "asdf", [5, 6, 7]][3] }', [5, 6, 7]) + + def test_comma(self): + self._test('function f() { a=5; a -= 1, a+=3; return a }', 7) + self._test('function f() { a=5; return (a -= 1, a+=3, a); }', 7) + self._test('function f() { return (l=[0,1,2,3], function(a, b){return a+b})((l[1], l[2]), l[3]) }', 5) + + def test_void(self): + self._test('function f() { return void 42; }', None) + + def test_return_function(self): + jsi = JSInterpreter(''' + function f() { return [1, function(){return 1}][1] } + ''') + self.assertEqual(jsi.call_function('f')([]), 1) + + def test_null(self): + self._test('function f() { return null; }', None) + self._test('function f() { return [null > 0, null < 0, null == 0, null === 0]; }', + [False, False, False, False]) + self._test('function f() { return [null >= 0, null <= 0]; }', [True, True]) + + def test_undefined(self): + self._test('function f() { return undefined === undefined; }', True) + self._test('function f() { return undefined; }', JS_Undefined) + self._test('function f() {return undefined ?? 42; }', 42) + self._test('function f() { let v; return v; }', JS_Undefined) + self._test('function f() { let v; return v**0; }', 1) + self._test('function f() { let v; return [v>42, v<=42, v&&42, 42&&v]; }', + [False, False, JS_Undefined, JS_Undefined]) + + self._test(''' + function f() { return [ + undefined === undefined, + undefined == undefined, + undefined == null, + undefined < undefined, + undefined > undefined, + undefined === 0, + undefined == 0, + undefined < 0, + undefined > 0, + undefined >= 0, + undefined <= 0, + undefined > null, + undefined < null, + undefined === null + ]; } + ''', list(map(bool, (1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)))) + + jsi = JSInterpreter(''' + function f() { let v; return [42+v, v+42, v**42, 42**v, 0**v]; } + ''') + for y in jsi.call_function('f'): + self.assertTrue(math.isnan(y)) + + def test_object(self): + self._test('function f() { return {}; }', {}) + self._test('function f() { let a = {m1: 42, m2: 0 }; return [a["m1"], a.m2]; }', [42, 0]) + self._test('function f() { let a; return a?.qq; }', JS_Undefined) + self._test('function f() { let a = {m1: 42, m2: 0 }; return a?.qq; }', JS_Undefined) + + def test_regex(self): + self._test('function f() { let a=/,,[/,913,/](,)}/; }', None) + self._test('function f() { let a=/,,[/,913,/](,)}/; return a; }', R'/,,[/,913,/](,)}/0') + + R''' # We are not compiling regex + jsi = JSInterpreter('function f() { let a=/,,[/,913,/](,)}/; return a; }') + self.assertIsInstance(jsi.call_function('f'), re.Pattern) + + jsi = JSInterpreter('function f() { let a=/,,[/,913,/](,)}/i; return a; }') + self.assertEqual(jsi.call_function('f').flags & re.I, re.I) + + jsi = JSInterpreter(R'function f() { let a=/,][}",],()}(\[)/; return a; }') + self.assertEqual(jsi.call_function('f').pattern, r',][}",],()}(\[)') + + jsi = JSInterpreter(R'function f() { let a=[/[)\\]/]; return a[0]; }') + self.assertEqual(jsi.call_function('f').pattern, r'[)\\]') + ''' + + @unittest.skip('Not implemented') + def test_replace(self): + self._test('function f() { let a="data-name".replace("data-", ""); return a }', + 'name') + self._test('function f() { let a="data-name".replace(new RegExp("^.+-"), ""); return a; }', + 'name') + self._test('function f() { let a="data-name".replace(/^.+-/, ""); return a; }', + 'name') + self._test('function f() { let a="data-name".replace(/a/g, "o"); return a; }', + 'doto-nome') + self._test('function f() { let a="data-name".replaceAll("a", "o"); return a; }', + 'doto-nome') + + def test_char_code_at(self): + jsi = JSInterpreter('function f(i){return "test".charCodeAt(i)}') + self._test(jsi, 116, args=[0]) + self._test(jsi, 101, args=[1]) + self._test(jsi, 115, args=[2]) + self._test(jsi, 116, args=[3]) + self._test(jsi, None, args=[4]) + self._test(jsi, 116, args=['not_a_number']) + + def test_bitwise_operators_overflow(self): + self._test('function f(){return -524999584 << 5}', 379882496) + self._test('function f(){return 1236566549 << 5}', 915423904) + + def test_bitwise_operators_typecast(self): + self._test('function f(){return null << 5}', 0) + self._test('function f(){return undefined >> 5}', 0) + self._test('function f(){return 42 << NaN}', 42) + + def test_negative(self): + self._test('function f(){return 2 * -2.0 ;}', -4) + self._test('function f(){return 2 - - -2 ;}', 0) + self._test('function f(){return 2 - - - -2 ;}', 4) + self._test('function f(){return 2 - + + - -2;}', 0) + self._test('function f(){return 2 + - + - -2;}', 0) + + @unittest.skip('Not implemented') + def test_packed(self): + jsi = JSInterpreter('''function f(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('f', '''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 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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__':