DRY up reblog vs original status check

Checking reblog vs original status was happening in multiple places
across the app. For views, this logic was encapsulated in a helper
method named `proper_status` but in the other layers of the app, the
logic was duplicated.

Because the logic is used at all layers of the app, we extracted it into
a `Status#proper` method on the model and changed all uses of the logic
to use this method. There is now a single source of truth for this
condition.

We added test coverage to untested methods that got refactored.

2 files changed, 7 insertions, 3 deletions

diff --git a/app/models/account.rb b/app/models/account.rb
index 6968607a2..cbba8b5b6 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -125,11 +125,11 @@ class Account < ApplicationRecord
   end
 
   def favourited?(status)
-    (status.reblog? ? status.reblog : status).favourites.where(account: self).count.positive?
+    status.proper.favourites.where(account: self).count.positive?
   end
 
   def reblogged?(status)
-    (status.reblog? ? status.reblog : status).reblogs.where(account: self).count.positive?
+    status.proper.reblogs.where(account: self).count.positive?
   end
 
   def keypair
diff --git a/app/models/status.rb b/app/models/status.rb
index 6948ad77c..7e3dd3e28 100644
--- a/app/models/status.rb
+++ b/app/models/status.rb
@@ -62,8 +62,12 @@ class Status < ApplicationRecord
     reply? ? :comment : :note
   end
 
+  def proper
+    reblog? ? reblog : self
+  end
+
   def content
-    reblog? ? reblog.text : text
+    proper.text
   end
 
   def target