1 files changed, 105 insertions, 0 deletions
diff --git a/test/test_compat.py b/test/test_compat.py
new file mode 100644
index 0000000..71ca7f9
--- /dev/null
+++ b/test/test_compat.py
@@ -0,0 +1,105 @@
+#!/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__))))
+
+
+import struct
+
+from yt_dlp import compat
+from yt_dlp.compat import urllib  # isort: split
+from yt_dlp.compat import (
+    compat_etree_fromstring,
+    compat_expanduser,
+    compat_urllib_parse_unquote,
+    compat_urllib_parse_urlencode,
+)
+from yt_dlp.compat.urllib.request import getproxies
+
+
+class TestCompat(unittest.TestCase):
+    def test_compat_passthrough(self):
+        with self.assertWarns(DeprecationWarning):
+            compat.compat_basestring
+
+        with self.assertWarns(DeprecationWarning):
+            compat.WINDOWS_VT_MODE
+
+        self.assertEqual(urllib.request.getproxies, getproxies)
+
+        with self.assertWarns(DeprecationWarning):
+            compat.compat_pycrypto_AES  # Must not raise error
+
+    def test_compat_expanduser(self):
+        old_home = os.environ.get('HOME')
+        test_str = R'C:\Documents and Settings\тест\Application Data'
+        try:
+            os.environ['HOME'] = test_str
+            self.assertEqual(compat_expanduser('~'), test_str)
+        finally:
+            os.environ['HOME'] = old_home or ''
+
+    def test_compat_urllib_parse_unquote(self):
+        self.assertEqual(compat_urllib_parse_unquote('abc%20def'), 'abc def')
+        self.assertEqual(compat_urllib_parse_unquote('%7e/abc+def'), '~/abc+def')
+        self.assertEqual(compat_urllib_parse_unquote(''), '')
+        self.assertEqual(compat_urllib_parse_unquote('%'), '%')
+        self.assertEqual(compat_urllib_parse_unquote('%%'), '%%')
+        self.assertEqual(compat_urllib_parse_unquote('%%%'), '%%%')
+        self.assertEqual(compat_urllib_parse_unquote('%2F'), '/')
+        self.assertEqual(compat_urllib_parse_unquote('%2f'), '/')
+        self.assertEqual(compat_urllib_parse_unquote('%E6%B4%A5%E6%B3%A2'), '津波')
+        self.assertEqual(
+            compat_urllib_parse_unquote('''<meta property="og:description" content="%E2%96%81%E2%96%82%E2%96%83%E2%96%84%25%E2%96%85%E2%96%86%E2%96%87%E2%96%88" />
+%<a href="https://ar.wikipedia.org/wiki/%D8%AA%D8%B3%D9%88%D9%86%D8%A7%D9%85%D9%8A">%a'''),
+            '''<meta property="og:description" content="▁▂▃▄%▅▆▇█" />
+%<a href="https://ar.wikipedia.org/wiki/تسونامي">%a''')
+        self.assertEqual(
+            compat_urllib_parse_unquote('''%28%5E%E2%97%A3_%E2%97%A2%5E%29%E3%81%A3%EF%B8%BB%E3%83%87%E2%95%90%E4%B8%80    %E2%87%80    %E2%87%80    %E2%87%80    %E2%87%80    %E2%87%80    %E2%86%B6%I%Break%25Things%'''),
+            '''(^◣_◢^)っ︻デ═一    ⇀    ⇀    ⇀    ⇀    ⇀    ↶%I%Break%Things%''')
+
+    def test_compat_urllib_parse_unquote_plus(self):
+        self.assertEqual(urllib.parse.unquote_plus('abc%20def'), 'abc def')
+        self.assertEqual(urllib.parse.unquote_plus('%7e/abc+def'), '~/abc def')
+
+    def test_compat_urllib_parse_urlencode(self):
+        self.assertEqual(compat_urllib_parse_urlencode({'abc': 'def'}), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode({'abc': b'def'}), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode({b'abc': 'def'}), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode({b'abc': b'def'}), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode([('abc', 'def')]), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode([('abc', b'def')]), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode([(b'abc', 'def')]), 'abc=def')
+        self.assertEqual(compat_urllib_parse_urlencode([(b'abc', b'def')]), 'abc=def')
+
+    def test_compat_etree_fromstring(self):
+        xml = '''
+            <root foo="bar" spam="中文">
+                <normal>foo</normal>
+                <chinese>中文</chinese>
+                <foo><bar>spam</bar></foo>
+            </root>
+        '''
+        doc = compat_etree_fromstring(xml.encode())
+        self.assertTrue(isinstance(doc.attrib['foo'], str))
+        self.assertTrue(isinstance(doc.attrib['spam'], str))
+        self.assertTrue(isinstance(doc.find('normal').text, str))
+        self.assertTrue(isinstance(doc.find('chinese').text, str))
+        self.assertTrue(isinstance(doc.find('foo/bar').text, str))
+
+    def test_compat_etree_fromstring_doctype(self):
+        xml = '''<?xml version="1.0"?>
+<!DOCTYPE smil PUBLIC "-//W3C//DTD SMIL 2.0//EN" "http://www.w3.org/2001/SMIL20/SMIL20.dtd">
+<smil xmlns="http://www.w3.org/2001/SMIL20/Language"></smil>'''
+        compat_etree_fromstring(xml)
+
+    def test_struct_unpack(self):
+        self.assertEqual(struct.unpack('!B', b'\x00'), (0,))
+
+
+if __name__ == '__main__':
+    unittest.main()