[UI] Add SVG support for tracker icons

SVG files are supported by all browsers so need to support it as well,
according to https://www.w3schools.com/html/html_favicon.asp

Also, it appears as SEO.com site, which was dropped because of a cert issue,
has only SVG icon. So enabled it again.

Lastly, from python 3.2, `os.path.samefile` is supported on Windows.
So Windows will now test TrackerIcons as well.

.pre-commit-config.yaml

@@ -3,6 +3,7 @@ default_language_version:
 exclude: >
   (?x)^(
       deluge/ui/web/docs/template/.*|
+      deluge/tests/data/.*svg|
   )$
 repos:
   - repo: https://github.com/ambv/black

deluge/tests/data/seo.svg

@@ -0,0 +1 @@
+<?xml version="1.0" encoding="UTF-8"?> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 95.63 110.42" width="10cm" height="10cm"><defs><style>.cls-1{fill:#ec5728;}.cls-2{fill:#fff;}</style></defs><title>seocom-target</title><g id="Layer_2" data-name="Layer 2"><g id="Layer_1-2" data-name="Layer 1"><polygon class="cls-1" points="95.63 82.81 47.81 110.42 0 82.81 0 27.61 47.81 0 95.63 27.61 95.63 82.81"></polygon><path class="cls-2" d="M47.81,18.64A36.57,36.57,0,1,0,84.38,55.21,36.57,36.57,0,0,0,47.81,18.64Zm0,63.92A27.35,27.35,0,1,1,75.16,55.21,27.35,27.35,0,0,1,47.81,82.56Z"></path><path class="cls-2" d="M47.81,39.46A15.75,15.75,0,1,0,63.56,55.21,15.75,15.75,0,0,0,47.81,39.46Zm0,24.25a8.5,8.5,0,1,1,8.5-8.5A8.51,8.51,0,0,1,47.81,63.71Z"></path></g></g></svg> 

deluge/tests/test_tracker_icons.py

@@ -6,11 +6,9 @@
 #
 
 import pytest
-from twisted.trial.unittest import SkipTest
 
 import deluge.component as component
 import deluge.ui.tracker_icons
-from deluge.common import windows_check
 from deluge.ui.tracker_icons import TrackerIcon, TrackerIcons
 
 from . import common
@@ -23,10 +21,6 @@ common.disable_new_release_check()
 
 @pytest.mark.internet
 class TrackerIconsTestCase(BaseTestCase):
-
-    if windows_check():
-        skip = 'cannot use os.path.samefile to compair on windows(unix only)'
-
     def set_up(self):
         # Disable resizing with Pillow for consistency.
         self.patch(deluge.ui.tracker_icons, 'Image', None)
@@ -60,10 +54,9 @@ class TrackerIconsTestCase(BaseTestCase):
         d.addCallback(self.assertEqual, icon)
         return d
 
-    def test_get_seo_ico_with_sni(self):
+    def test_get_seo_svg_with_sni(self):
         # seo using certificates with SNI support only
-        raise SkipTest('Site certificate expired')
-        icon = TrackerIcon(common.get_test_data_file('seo.ico'))
+        icon = TrackerIcon(common.get_test_data_file('seo.svg'))
         d = self.icons.fetch('www.seo.com')
         d.addCallback(self.assertNotIdentical, None)
         d.addCallback(self.assertEqual, icon)

deluge/ui/tracker_icons.py

@@ -609,11 +609,13 @@ MIME_MAP = {
     'image/png': 'png',
     'image/vnd.microsoft.icon': 'ico',
     'image/x-icon': 'ico',
+    'image/svg+xml': 'svg',
     'gif': 'image/gif',
     'jpg': 'image/jpeg',
     'jpeg': 'image/jpeg',
     'png': 'image/png',
     'ico': 'image/vnd.microsoft.icon',
+    'svg': 'image/svg+xml',
 }