DEV: Add missing test cases for `Topic.for_digest` and `Topic.secured`.

spec/models/topic_spec.rb

@@ -1656,7 +1656,7 @@ describe Topic do
     end
   end
 
-  describe 'for_digest' do
+  describe '.for_digest' do
     let(:user) { Fabricate.build(:user) }
 
     context "no edit grace period" do
@@ -1688,6 +1688,18 @@ describe Topic do
         expect(Topic.for_digest(user, 1.year.ago, top_order: true)).to be_blank
       end
 
+      it "doesn't return topics that a user has muted" do
+        user = Fabricate(:user)
+
+        Fabricate(:topic_user,
+          user: user,
+          topic: topic,
+          notification_level: TopicUser.notification_levels[:muted]
+        )
+
+        expect(Topic.for_digest(user, 1.year.ago)).to eq([])
+      end
+
       it "doesn't return topics from suppressed categories" do
         user = Fabricate(:user)
         category = Fabricate(:category)
@@ -1784,21 +1796,24 @@ describe Topic do
         expect(Topic.for_digest(user, 1.year.ago, top_order: true)).to eq([topic1])
       end
     end
-
   end
 
-  describe 'secured' do
-    it 'can remove secure groups' do
+  describe '.secured' do
+    it 'should return the right topics' do
       category = Fabricate(:category, read_restricted: true)
-      Fabricate(:topic, category: category, created_at: 1.day.ago)
+      topic = Fabricate(:topic, category: category, created_at: 1.day.ago)
+      group = Fabricate(:group)
+      user = Fabricate(:user)
+      group.add(user)
+      private_category = Fabricate(:private_category, group: group)
 
-      expect(Topic.secured(Guardian.new(nil)).count).to eq(0)
-      expect(Topic.secured(Guardian.new(Fabricate(:admin))).count).to eq(2)
+      expect(Topic.secured(Guardian.new(nil))).to eq([])
 
-      # for_digest
+      expect(Topic.secured(Guardian.new(user)))
+        .to contain_exactly(private_category.topic)
 
-      expect(Topic.for_digest(Fabricate(:user), 1.year.ago).count).to eq(0)
-      expect(Topic.for_digest(Fabricate(:admin), 1.year.ago).count).to eq(1)
+      expect(Topic.secured(Guardian.new(Fabricate(:admin))))
+        .to contain_exactly(category.topic, private_category.topic, topic)
     end
   end