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-rw-r--r--test/test_jsinterp.py95
1 files changed, 95 insertions, 0 deletions
diff --git a/test/test_jsinterp.py b/test/test_jsinterp.py
new file mode 100644
index 000000000..b91b8c492
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+++ b/test/test_jsinterp.py
@@ -0,0 +1,95 @@
+#!/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__))))
+
+from youtube_dl.jsinterp import JSInterpreter
+
+
+class TestJSInterpreter(unittest.TestCase):
+ def test_basic(self):
+ jsi = JSInterpreter('function x(){;}')
+ self.assertEqual(jsi.call_function('x'), None)
+
+ jsi = JSInterpreter('function x3(){return 42;}')
+ self.assertEqual(jsi.call_function('x3'), 42)
+
+ def test_calc(self):
+ jsi = JSInterpreter('function x4(a){return 2*a+1;}')
+ self.assertEqual(jsi.call_function('x4', 3), 7)
+
+ 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 19 & 21;}')
+ self.assertEqual(jsi.call_function('f'), 17)
+
+ jsi = JSInterpreter('function f(){return 11 >> 2;}')
+ self.assertEqual(jsi.call_function('f'), 2)
+
+ 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])
+
+ 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_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):
+ jsi = JSInterpreter('''
+ function x() {
+ var x = /* 1 + */ 2;
+ var y = /* 30
+ * 40 */ 50;
+ return x + y;
+ }
+ ''')
+ self.assertEqual(jsi.call_function('x'), 52)
+
+ 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])
+
+
+if __name__ == '__main__':
+ unittest.main()