Add quotes for strings in javascript.assemble

qutebrowser/utils/javascript.py

@@ -54,7 +54,7 @@ def _convert_js_arg(arg):
     if arg is None:
         return 'undefined'
     elif isinstance(arg, str):
-        return string_escape(arg)
+        return '"{}"'.format(string_escape(arg))
     elif isinstance(arg, int):
         return str(arg)
     else:

tests/unit/utils/test_javascript.py

@@ -123,8 +123,8 @@ class TestStringEscape:
 
 
 @pytest.mark.parametrize('arg, expected', [
-    ('foobar', 'foobar'),
-    ('foo\\bar', r'foo\\bar'),
+    ('foobar', '"foobar"'),
+    ('foo\\bar', r'"foo\\bar"'),
     (42, '42'),
     (None, 'undefined'),
     (object(), TypeError),