Created CreateAuction class to wrap BuildAuction and SaveAuction

CreateAuction makes it easier to implement and test calls to ChangeState.
In CreateAuction we will make explicit an previously implicit state: 'unpublished'.

unpublished is the default published state for auctions thanks to a default call in a migration.
But we will also ensure that any newly-created auctions also get a State object created reflecting this state.

app/controllers/admin/auctions_controller.rb

@@ -13,9 +13,9 @@ def new
   end
 
   def create
-    auction = BuildAuction.new(params, current_user).perform
+    auction = CreateAuction.new(params, current_user).perform
 
-    if SaveAuction.new(auction).perform
+    if auction.persisted?
       flash[:success] = I18n.t('controllers.admin.auctions.create.success')
       redirect_to admin_auction_path(auction)
     else

app/services/create_auction.rb

@@ -0,0 +1,25 @@
+class CreateAuction
+  def initialize(params, current_user)
+    @params = params
+    @current_user = current_user
+  end
+
+  def perform
+    build_auction
+    save_auction
+
+    auction
+  end
+
+  private
+
+  attr_reader :params, :current_user, :auction
+
+  def build_auction
+    @auction ||= BuildAuction.new(params, current_user).perform
+  end
+
+  def save_auction
+    SaveAuction.new(auction).perform
+  end
+end

docs/moving-states-to-tables.md

@@ -7,6 +7,8 @@ Refactoring data pattern:
 * Remove old writes (in code)
 * Remove old fields (in database)
 
+
+
 ---------
 # try this one first:
 Published: draft => published | archived

spec/services/create_auction_spec.rb

@@ -0,0 +1,78 @@
+require 'rails_helper'
+
+describe CreateAuction do
+  describe '#perform' do
+    it 'returns an auction' do
+      params = {
+        auction: {
+          title: 'hello'
+        }
+      }
+      current_user = create(:user)
+      create_auction = CreateAuction.new(params, current_user)
+      auction = create_auction.perform
+
+      expect(auction).to be_a Auction
+    end
+
+    context 'when the auction is valid' do
+      it 'saves the auction' do
+        auction_params = {
+          "title"=>"This is the form-edited title",
+          "started_at"=>"2017-01-30",
+          "started_at(1i)"=>"11",
+          "started_at(2i)"=>"30",
+          "started_at(3i)"=>"AM",
+          "ended_at"=>"2017-01-30",
+          "ended_at(1i)"=>"4",
+          "ended_at(2i)"=>"45",
+          "ended_at(3i)"=>"PM",
+          "due_in_days"=>"6",
+          "delivery_due_at"=>"2017-02-7",
+          "start_price"=>"3500",
+          "type"=>"sealed_bid",
+          "summary"=>"The Summary!",
+          "description"=>"and the admin related stuff",
+          "skill_ids"=>[""],
+          "github_repo"=>"https://github.com/18F/calc",
+          "issue_url"=>"https://github.com/18F/calc/issues/255",
+          "purchase_card"=>"default",
+          "c2_status"=>"not_requested",
+          "customer_id"=>"",
+          "billable_to"=>"Client Account 1 (Billable)",
+          "notes"=>""
+        }
+
+        params = HashWithIndifferentAccess.new({
+          auction: auction_params,
+          commit: "Create",
+          controller: "admin/auctions",
+          action: "create"
+        })
+
+        current_user = create(:user)
+
+        create_auction = CreateAuction.new(params, current_user)
+
+        expect {
+          create_auction.perform
+        }.to change { Auction.count }.by(1)
+      end
+    end
+
+    context 'when the auction is not valid' do
+      it 'does not save the auction' do
+        params = {
+          auction: {title: nil}
+        }
+        current_user = create(:user)
+
+        create_auction = CreateAuction.new(params, current_user)
+
+        expect {
+          create_auction.perform
+        }.to change { Auction.count }.by(0)
+      end
+    end
+  end
+end