Eased custom font configuration

tests/test_settings.py

@@ -10,8 +10,8 @@ import tornado.options as options
 from tests.utils import make_tests_data_path
 from webssh.policy import load_host_keys
 from webssh.settings import (
-    get_host_keys_settings, get_policy_setting, base_dir, print_version,
-    get_ssl_context, get_trusted_downstream, get_origin_setting
+    get_host_keys_settings, get_policy_setting, base_dir, get_font_setting,
+    get_ssl_context, get_trusted_downstream, get_origin_setting, print_version
 )
 from webssh.utils import UnicodeType
 from webssh._version import __version__
@@ -166,3 +166,15 @@ class TestSettings(unittest.TestCase):
         options.origin = 'www.example.com:80,  www.example.org:443'
         result = {'http://www.example.com', 'https://www.example.org'}
         self.assertEqual(get_origin_setting(options), result)
+
+    def test_get_font_setting(self):
+        font_dir = os.path.join(base_dir, 'tests', 'data', 'fonts')
+        font = ''
+        self.assertEqual(get_font_setting(font, font_dir), 'fake-font')
+
+        font = 'fake-font'
+        self.assertEqual(get_font_setting(font, font_dir), 'fake-font')
+
+        font = 'wrong-name'
+        with self.assertRaises(ValueError):
+            get_font_setting(font, font_dir)