Encapsulate domain list in class

Code shouldn’t be accessing this list directly; the class should provide
a sensible interface to the data.

app/config.py

@@ -69,39 +69,6 @@ class Config(object):
     STATSD_HOST = "statsd.hostedgraphite.com"
     STATSD_PORT = 8125
     NOTIFY_ENVIRONMENT = 'development'
-
-    EMAIL_DOMAIN_REGEXES = [
-        r"gov\.uk",
-        r"mod\.uk",
-        r"mil\.uk",
-        r"ddc-mod\.org",
-        r"slc\.co\.uk",
-        r"gov\.scot",
-        r"parliament\.uk",
-        r"nhs\.uk",
-        r"nhs\.net",
-        r"police\.uk",
-        r"dclgdatamart\.co\.uk",
-        r"ucds\.email",
-        r"naturalengland\.org\.uk",
-        r"hmcts\.net",
-        r"scotent\.co\.uk",
-        r"assembly\.wales",
-        r"cjsm\.net",
-        r"cqc\.org\.uk",
-        r"bl\.uk",
-        r"stfc\.ac\.uk",
-        r"wmfs\.net",
-        r"bbsrc\.ac\.uk",
-        r"acas\.org\.uk",
-        r"gov\.wales",
-        r"biglotteryfund\.org\.uk",
-        r"marinemanagement\.org\.uk",
-        r"britishmuseum\.org",
-        r"derrystrabane\.com",
-        r"highwaysengland\.co\.uk",
-    ]
-
     LOGO_UPLOAD_BUCKET_NAME = 'public-logos-local'
     ROUTE_SECRET_KEY_1 = os.environ.get('ROUTE_SECRET_KEY_1', '')
     ROUTE_SECRET_KEY_2 = os.environ.get('ROUTE_SECRET_KEY_2', '')

app/utils.py

@@ -438,9 +438,41 @@ class NotGovernmentDomain(Exception):
 
 class GovernmentDomain:
 
+    domains = [
+        r"gov\.uk",
+        r"mod\.uk",
+        r"mil\.uk",
+        r"ddc-mod\.org",
+        r"slc\.co\.uk",
+        r"gov\.scot",
+        r"parliament\.uk",
+        r"nhs\.uk",
+        r"nhs\.net",
+        r"police\.uk",
+        r"dclgdatamart\.co\.uk",
+        r"ucds\.email",
+        r"naturalengland\.org\.uk",
+        r"hmcts\.net",
+        r"scotent\.co\.uk",
+        r"assembly\.wales",
+        r"cjsm\.net",
+        r"cqc\.org\.uk",
+        r"bl\.uk",
+        r"stfc\.ac\.uk",
+        r"wmfs\.net",
+        r"bbsrc\.ac\.uk",
+        r"acas\.org\.uk",
+        r"gov\.wales",
+        r"biglotteryfund\.org\.uk",
+        r"marinemanagement\.org\.uk",
+        r"britishmuseum\.org",
+        r"derrystrabane\.com",
+        r"highwaysengland\.co\.uk",
+    ]
+
     def __init__(self, email_address_or_domain):
 
-        for domain in current_app.config['EMAIL_DOMAIN_REGEXES']:
+        for domain in self.domains:
             if re.search(
                 r"[\.|@]({})$".format(domain),
                 email_address_or_domain.lower()