Update tests

colosseum/constants.py

@@ -350,7 +350,7 @@ def value(self, context):
 BACKGROUND_COLOR_CHOICES = Choices(default, TRANSPARENT, validators=[is_color])
 
 # background_image
-BACKGROUND_IMAGE_CHOICES = Choices(validators=[is_uri], explicit_defaulting_constants=[INHERIT])
+BACKGROUND_IMAGE_CHOICES = Choices(None, validators=[is_uri], explicit_defaulting_constants=[INHERIT, INITIAL])
 
 # background_repeat
 REPEAT = 'repeat'
@@ -364,10 +364,10 @@ def value(self, context):
 SCROLL = 'scroll'
 FIXED = 'fixed'
 
-BACKGROUND_ATTACHMENT_CHOICES = Choices(SCROLL, FIXED, explicit_defaulting_constants=[INHERIT])
+BACKGROUND_ATTACHMENT_CHOICES = Choices(SCROLL, FIXED, explicit_defaulting_constants=[INHERIT, INITIAL])
 
 # background_position
-BACKGROUND_POSITION_CHOICES = Choices(validators=is_position, explicit_defaulting_constants=[INHERIT])
+BACKGROUND_POSITION_CHOICES = Choices(validators=[is_position], explicit_defaulting_constants=[INHERIT])
 
 # background
 

colosseum/declaration.py

@@ -26,7 +26,8 @@
 )
 from .exceptions import ValidationError
 from .wrappers import (
-    Border, BorderBottom, BorderLeft, BorderRight, BorderTop, Outline,
+    Background, Border, BorderBottom, BorderLeft, BorderRight, BorderTop,
+    Outline,
 )
 
 _CSS_PROPERTIES = set()
@@ -115,7 +116,6 @@ def validated_property(name, choices, initial):
             # Check the value attribute is a callable
             if not callable(value_attr):
                 raise ValueError('Initial value "%s" `value` attribute is not callable!' % initial)
-
         except AttributeError:
             raise ValueError('Initial value "%s" does not have a value attribute!' % initial)
 

colosseum/parser.py

@@ -510,7 +510,7 @@ def position(value):
 ##############################################################################
 # Background shorthand
 ##############################################################################
-def _parse_background_property_part(value, outline_dict):
+def _parse_background_property_part(value, background_dict):
     """Parse background shorthand property part for known properties."""
     from .constants import (  # noqa
         BACKGROUND_ATTACHMENT_CHOICES, BACKGROUND_COLOR_CHOICES, BACKGROUND_IMAGE_CHOICES,
@@ -527,11 +527,11 @@ def _parse_background_property_part(value, outline_dict):
         except (ValueError, ValidationError):
             continue
 
-        if property_name in border_dict:
+        if property_name in background_dict:
             raise ValueError('Invalid duplicated property!')
 
-        border_dict[property_name] = value
-        return border_dict
+        background_dict[property_name] = value
+        return background_dict
 
     raise ValueError('Background value "{value}" not valid!'.format(value=value))
 

colosseum/validators.py

@@ -183,6 +183,7 @@ def is_cursor(value):
     except ValueError as error:
         raise ValidationError(str(error))
 
+    return value
 
 is_cursor.description = ('[ [<uri> ,]* [ auto | crosshair | default | pointer | move | e-resize '
                          '| ne-resize | nw-resize | n-resize | se-resize | sw-resize | s-resize '

colosseum/wrappers.py

@@ -198,6 +198,11 @@ class Border(Shorthand):
     VALID_KEYS = ['border_width', 'border_style', 'border_color']
 
 
+class Background(Shorthand):
+    VALID_KEYS = ['background_color', 'background_image', 'background_repeat', 'background_attachment',
+                  'background_position']
+
+
 class Uri:
     """Wrapper for a url."""