[test_unicode_literals] Arm unicode_literals check

From now on, the line

from __future__ import unicode_literals

should be contained in every single Python file lest we run into any more 2.x/3.x issues.
Going forward, we're likely to develop on 3.x only and would likely miss subtle bugs otherwise.

devscripts/bash-completion.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python
+from __future__ import unicode_literals
+
 import os
 from os.path import dirname as dirn
 import sys

devscripts/check-porn.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+from __future__ import unicode_literals
 
 """
 This script employs a VERY basic heuristic ('porn' in webpage.lower()) to check

devscripts/gh-pages/add-version.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+from __future__ import unicode_literals
 
 import json
 import sys

devscripts/gh-pages/generate-download.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python3
+from __future__ import unicode_literals
+
 import hashlib
 import urllib.request
 import json

devscripts/gh-pages/sign-versions.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+from __future__ import unicode_literals, with_statement
 
 import rsa
 import json
@@ -29,4 +30,5 @@
 print('signature: ' + signature)
 
 versions_info['signature'] = signature
-json.dump(versions_info, open('update/versions.json', 'w'), indent=4, sort_keys=True)
+with open('update/versions.json', 'w') as versionsf:
+    json.dump(versions_info, versionsf, indent=4, sort_keys=True)

devscripts/gh-pages/update-copyright.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # coding: utf-8
 
-from __future__ import with_statement
+from __future__ import with_statement, unicode_literals
 
 import datetime
 import glob
@@ -13,7 +13,7 @@
 for fn in glob.glob('*.html*'):
     with io.open(fn, encoding='utf-8') as f:
         content = f.read()
-    newc = re.sub(u'(?P<copyright>Copyright © 2006-)(?P<year>[0-9]{4})', u'Copyright © 2006-' + year, content)
+    newc = re.sub(r'(?P<copyright>Copyright © 2006-)(?P<year>[0-9]{4})', 'Copyright © 2006-' + year, content)
     if content != newc:
         tmpFn = fn + '.part'
         with io.open(tmpFn, 'wt', encoding='utf-8') as outf:

devscripts/gh-pages/update-feed.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+from __future__ import unicode_literals
 
 import datetime
 import io

devscripts/gh-pages/update-sites.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+from __future__ import unicode_literals
 
 import sys
 import os

devscripts/make_readme.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 import io
 import sys
 import re

devscripts/prepare_manpage.py

@@ -1,3 +1,4 @@
+from __future__ import unicode_literals
 
 import io
 import os.path

devscripts/zsh-completion.py

@@ -1,4 +1,6 @@
 #!/usr/bin/env python
+from __future__ import unicode_literals
+
 import os
 from os.path import dirname as dirn
 import sys

test/test_unicode_literals.py

@@ -9,14 +9,13 @@
 
 IGNORED_FILES = [
     'setup.py',  # http://bugs.python.org/issue13943
+    'conf.py',
+    'buildserver.py',
 ]
 
 
 class TestUnicodeLiterals(unittest.TestCase):
     def test_all_files(self):
-        print('Skipping this test (not yet fully implemented)')
-        return
-
         for dirpath, _, filenames in os.walk(rootDir):
             for basename in filenames:
                 if not basename.endswith('.py'):
@@ -30,10 +29,10 @@ def test_all_files(self):
 
                 if "'" not in code and '"' not in code:
                     continue
-                imps = 'from __future__ import unicode_literals'
-                self.assertTrue(
-                    imps in code,
-                    ' %s  missing in %s' % (imps, fn))
+                self.assertRegexpMatches(
+                    code,
+                    r'(?:#.*\n*)?from __future__ import (?:[a-z_]+,\s*)*unicode_literals',
+                    'unicode_literals import  missing in %s' % fn)
 
                 m = re.search(r'(?<=\s)u[\'"](?!\)|,|$)', code)
                 if m is not None:

test/test_write_annotations.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 # coding: utf-8
+from __future__ import unicode_literals
 
 # Allow direct execution
 import os

test/test_write_info_json.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 # coding: utf-8
+from __future__ import unicode_literals
 
 # Allow direct execution
 import os
@@ -32,7 +33,7 @@ def __init__(self, *args, **kwargs):
 TEST_ID = 'BaW_jenozKc'
 INFO_JSON_FILE = TEST_ID + '.info.json'
 DESCRIPTION_FILE = TEST_ID + '.mp4.description'
-EXPECTED_DESCRIPTION = u'''test chars:  "'/\ä↭𝕐
+EXPECTED_DESCRIPTION = '''test chars:  "'/\ä↭𝕐
 test URL: https://github.com/rg3/youtube-dl/issues/1892
 
 This is a test video for youtube-dl.
@@ -53,11 +54,11 @@ def test_info_json(self):
         self.assertTrue(os.path.exists(INFO_JSON_FILE))
         with io.open(INFO_JSON_FILE, 'r', encoding='utf-8') as jsonf:
             jd = json.load(jsonf)
-        self.assertEqual(jd['upload_date'], u'20121002')
+        self.assertEqual(jd['upload_date'], '20121002')
         self.assertEqual(jd['description'], EXPECTED_DESCRIPTION)
         self.assertEqual(jd['id'], TEST_ID)
         self.assertEqual(jd['extractor'], 'youtube')
-        self.assertEqual(jd['title'], u'''youtube-dl test video "'/\ä↭𝕐''')
+        self.assertEqual(jd['title'], '''youtube-dl test video "'/\ä↭𝕐''')
         self.assertEqual(jd['uploader'], 'Philipp Hagemeister')
 
         self.assertTrue(os.path.exists(DESCRIPTION_FILE))

test/test_youtube_lists.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+from __future__ import unicode_literals
 
 # Allow direct execution
 import os

youtube_dl/__main__.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+from __future__ import unicode_literals
 
 # Execute with
 # $ python youtube_dl/__main__.py (2.6+)

youtube_dl/aes.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 __all__ = ['aes_encrypt', 'key_expansion', 'aes_ctr_decrypt', 'aes_cbc_decrypt', 'aes_decrypt_text']
 
 import base64

youtube_dl/extractor/__init__.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from .abc import ABCIE
 from .academicearth import AcademicEarthCourseIE
 from .addanime import AddAnimeIE

youtube_dl/extractor/bambuser.py

@@ -18,7 +18,7 @@ class BambuserIE(InfoExtractor):
     _TEST = {
         'url': 'http://bambuser.com/v/4050584',
         # MD5 seems to be flaky, see https://travis-ci.org/rg3/youtube-dl/jobs/14051016#L388
-        # u'md5': 'fba8f7693e48fd4e8641b3fd5539a641',
+        # 'md5': 'fba8f7693e48fd4e8641b3fd5539a641',
         'info_dict': {
             'id': '4050584',
             'ext': 'flv',

youtube_dl/postprocessor/__init__.py

@@ -1,3 +1,4 @@
+from __future__ import unicode_literals
 
 from .atomicparsley import AtomicParsleyPP
 from .ffmpeg import (

youtube_dl/postprocessor/common.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 from ..utils import PostProcessingError
 
 

youtube_dl/postprocessor/xattrpp.py

@@ -1,3 +1,5 @@
+from __future__ import unicode_literals
+
 import os
 import subprocess
 import sys

youtube_dl/version.py

@@ -1,2 +1,3 @@
+from __future__ import unicode_literals
 
 __version__ = '2014.11.26'