Spec feed insert worker (#2965)

* Spec for feed insert worker when missing records

* more specs!

* Refactor feed insert worker

app/workers/feed_insert_worker.rb

@@ -3,13 +3,34 @@
 class FeedInsertWorker
   include Sidekiq::Worker
 
-  def perform(status_id, follower_id)
-    status   = Status.find(status_id)
-    follower = Account.find(follower_id)
+  attr_reader :status, :follower
 
-    return if FeedManager.instance.filter?(:home, status, follower.id)
-    FeedManager.instance.push(:home, follower, status)
-  rescue ActiveRecord::RecordNotFound
+  def perform(status_id, follower_id)
+    @status = Status.find_by(id: status_id)
+    @follower = Account.find_by(id: follower_id)
+
+    check_and_insert
+  end
+
+  private
+
+  def check_and_insert
+    if records_available?
+      perform_push unless feed_filtered?
+    else
       true
     end
   end
+
+  def records_available?
+    status.present? && follower.present?
+  end
+
+  def feed_filtered?
+    FeedManager.instance.filter?(:home, status, follower.id)
+  end
+
+  def perform_push
+    FeedManager.instance.push(:home, follower, status)
+  end
+end

spec/workers/feed_insert_worker_spec.rb

@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe FeedInsertWorker do
+  subject { described_class.new }
+
+  describe 'perform' do
+    let(:follower) { Fabricate(:account) }
+    let(:status) { Fabricate(:status) }
+
+    context 'when there are no records' do
+      it 'skips push with missing status' do
+        instance = double(push: nil)
+        allow(FeedManager).to receive(:instance).and_return(instance)
+        result = subject.perform(nil, follower.id)
+
+        expect(result).to eq true
+        expect(instance).not_to have_received(:push)
+      end
+
+      it 'skips push with missing account' do
+        instance = double(push: nil)
+        allow(FeedManager).to receive(:instance).and_return(instance)
+        result = subject.perform(status.id, nil)
+
+        expect(result).to eq true
+        expect(instance).not_to have_received(:push)
+      end
+    end
+
+    context 'when there are real records' do
+      it 'skips the push when there is a filter' do
+        instance = double(push: nil, filter?: true)
+        allow(FeedManager).to receive(:instance).and_return(instance)
+        result = subject.perform(status.id, follower.id)
+
+        expect(result).to be_nil
+        expect(instance).not_to have_received(:push)
+      end
+
+      it 'pushes the status onto the home timeline without filter' do
+        instance = double(push: nil, filter?: false)
+        allow(FeedManager).to receive(:instance).and_return(instance)
+        result = subject.perform(status.id, follower.id)
+
+        expect(result).to be_nil
+        expect(instance).to have_received(:push).with(:home, follower, status)
+      end
+    end
+  end
+end