Added migration to add new plans

Added migration to add new plans

changelogs/unreleased/300546-add-new-plans.yml

+---
+title: Migration to add new Premium and Ultimate plan records
+merge_request: 53465
+author:
+type: added

db/post_migrate/20210205104425_add_new_post_eoa_plans.rb

+# frozen_string_literal: true
+
+class AddNewPostEoaPlans < ActiveRecord::Migration[6.0]
+  DOWNTIME = false
+
+  def up
+    execute "INSERT INTO plans (name, title, created_at, updated_at) VALUES ('premium', 'Premium (Formerly Silver)', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)"
+    execute "INSERT INTO plans (name, title, created_at, updated_at) VALUES ('ultimate', 'Ultimate (Formerly Gold)', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP)"
+  end
+
+  def down
+    execute "DELETE FROM plans WHERE name IN ('premium', 'ultimate')"
+  end
+end

db/schema_migrations/20210205104425

+4df2229fca7652cb836c867b621da91f1194899c50bb0a8be2fbae58f29dc788
\ No newline at end of file

spec/migrations/add_new_post_eoa_plans_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+require Rails.root.join('db', 'post_migrate', '20210205104425_add_new_post_eoa_plans.rb')
+
+RSpec.describe AddNewPostEoaPlans do
+  let(:plans) { table(:plans) }
+
+  subject(:migration) { described_class.new }
+
+  describe '#up' do
+    it 'creates the two new records' do
+      expect { migration.up }.to change { plans.count }.by(2)
+
+      new_plans = plans.last(2)
+      expect(new_plans.map(&:name)).to contain_exactly('premium', 'ultimate')
+    end
+  end
+
+  describe '#down' do
+    it 'removes these two new records' do
+      plans.create!(name: 'premium', title: 'Premium (Formerly Silver)')
+      plans.create!(name: 'ultimate', title: 'Ultimate (Formerly Gold)')
+
+      expect { migration.down }.to change { plans.count }.by(-2)
+
+      expect(plans.find_by(name: 'premium')).to be_nil
+      expect(plans.find_by(name: 'ultimate')).to be_nil
+    end
+  end
+end