Add the green power Rater class

rating/__init__.py

@@ -20,6 +20,7 @@ from rating import responsive_layout
 from rating import social_media_links
 from rating import use_specific_fonts
 from rating import www_optional
+from rating import green_power
 
 
 def calculate_rating(results):
@@ -47,6 +48,7 @@ def calculate_rating(results):
         'SOCIAL_MEDIA_LINKS': social_media_links,
         'USE_SPECIFIC_FONTS': use_specific_fonts,
         'WWW_OPTIONAL': www_optional,
+        'GREEN_POWER': green_power,
     }
 
     output = {}

rating/green_power.py

@@ -0,0 +1,31 @@
+"""
+This checks the result for an url using green power, and returns
+a boolean based on whether it's using green power or not
+"""
+
+from rating.abstract_rater import AbstractRater
+
+class Rater(AbstractRater):
+
+    rating_type = 'boolean'
+    default_value = False
+    depends_on_checks = ['green_power']
+    max_score = 1
+
+    def __init__(self, check_results):
+        super().__init__(check_results)
+
+    def rate(self):
+        value = self.default_value
+        score = 0
+
+        if check_results['green_power']:
+            value = True
+            score = self.max_score
+
+        return {
+            'type': self.rating_type,
+            'value': value,
+            'score': score,
+            'max_score': self.max_score,
+        }