Allow admin to change asciicast's visibility

app/policies/asciicast_policy.rb

@@ -39,7 +39,7 @@ class AsciicastPolicy < ApplicationPolicy
   def change_visibility?
     return false unless user
 
-    record.owner?(user)
+    user.admin?
   end
 
 end

spec/policies/asciicast_policy_spec.rb

@@ -13,7 +13,7 @@ describe AsciicastPolicy do
       let(:user) { stub_model(User, admin?: true) }
 
       it "includes form fields + featured" do
-        expect(subject).to eq([:title, :description, :theme_name, :snapshot_at, :featured])
+        expect(subject).to eq([:title, :description, :theme_name, :snapshot_at, :featured, :private])
       end
     end
 
@@ -28,7 +28,7 @@ describe AsciicastPolicy do
         let(:asciicast) { Asciicast.new(user: user) }
 
         it "doesn't include featured but includes private" do
-          expect(subject).to eq([:title, :description, :theme_name, :snapshot_at, :private])
+          expect(subject).to eq([:title, :description, :theme_name, :snapshot_at])
         end
       end
     end
@@ -90,24 +90,4 @@ describe AsciicastPolicy do
     end
   end
 
-  permissions :change_visibility? do
-    let(:asciicast) { Asciicast.new }
-
-    it "denies access if user is nil" do
-      expect(subject).not_to permit(nil, asciicast)
-    end
-
-    it "grants access if user is owner of the asciicast" do
-      user = stub_model(User)
-      asciicast.user = user
-      expect(subject).to permit(user, asciicast)
-    end
-
-    it "denies access if user isn't owner of the asciicast" do
-      user = stub_model(User)
-      asciicast.user = stub_model(User)
-      expect(subject).not_to permit(user, asciicast)
-    end
-  end
-
 end