Optimize MuteService and AfterBlockService (#2836)

spec/services/after_block_service_spec.rb

@@ -0,0 +1,29 @@
+require 'rails_helper'
+
+RSpec.describe AfterBlockService do
+  subject do
+    -> { described_class.new.call(account, target_account) }
+  end
+
+  let(:account) { Fabricate(:account) }
+  let(:target_account) { Fabricate(:account) }
+
+  describe 'home timeline' do
+    let(:status) { Fabricate(:status, account: target_account) }
+    let(:other_account_status) { Fabricate(:status) }
+    let(:home_timeline_key) { FeedManager.instance.key(:home, account.id) }
+
+    before do
+      Redis.current.del(home_timeline_key)
+    end
+
+    it "clears account's statuses" do
+      FeedManager.instance.push(:home, account, status)
+      FeedManager.instance.push(:home, account, other_account_status)
+
+      is_expected.to change {
+        Redis.current.zrange(home_timeline_key, 0, -1)
+      }.from([status.id.to_s, other_account_status.id.to_s]).to([other_account_status.id.to_s])
+    end
+  end
+end