Ensure report details are not blank.

app/models/report.rb

@@ -1,4 +1,6 @@
 class Report < ActiveRecord::Base
   belongs_to :issue, :counter_cache => true
   belongs_to :user, :class_name => "User", :foreign_key => :reporter_user_id
+
+  validates :details, :presence => true
 end

db/migrate/20160822153055_create_issues_and_reports.rb

@@ -25,7 +25,7 @@ class CreateIssuesAndReports < ActiveRecord::Migration
     create_table :reports do |t|
       t.integer :issue_id
       t.integer :reporter_user_id
-      t.text :details
+      t.text :details, :null => false
       t.datetime :created_at
       t.datetime :updated_at
 

test/factories/reports.rb

@@ -0,0 +1,7 @@
+FactoryGirl.define do
+  factory :report do
+    sequence(:details) { |n| "Report details #{n}" }
+    issue
+    user
+  end
+end

test/models/report_test.rb

@@ -1,7 +1,11 @@
 require "test_helper"
 
 class ReportTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  def test_details_required
+    report = create(:report)
+
+    assert report.valid?
+    report.details = ''
+    assert !report.valid?
+  end
 end