adds validation on feasible_explanation

app/models/spending_proposal.rb

@@ -16,6 +16,7 @@ class SpendingProposal < ActiveRecord::Base
   validates :title, presence: true
   validates :author, presence: true
   validates :description, presence: true
+  validates_presence_of :feasible_explanation, if: :valuation_finished?
 
   validates :title, length: { in: 4..SpendingProposal.title_max_length }
   validates :description, length: { maximum: SpendingProposal.description_max_length }

spec/models/spending_proposal_spec.rb

@@ -42,6 +42,18 @@ describe SpendingProposal do
     end
   end
 
+  describe "#feasible_explanation" do
+    it "should be valid if valuation not finished" do
+      spending_proposal.valuation_finished = false
+      expect(spending_proposal).to be_valid
+    end
+
+    it "should not be valid if valuation finished" do
+      spending_proposal.valuation_finished = true
+      expect(spending_proposal).to_not be_valid
+    end
+  end
+
   describe "dossier info" do
     describe "#feasibility" do
       it "can be feasible" do