Add survey related tests

spec/models/survey_spec.rb

@@ -0,0 +1,28 @@
+require 'spec_helper'
+
+describe Survey do
+  subject { create(:survey) }
+  let(:survey_active) { create(:conference_survey, start_date: Date.current - 1.day, end_date: Date.current + 1.day) }
+  let(:survey_inactive) { create(:conference_survey, start_date: Date.current - 2.day, end_date: Date.current - 1.day) }
+
+  describe 'association' do
+    it { is_expected.to have_many(:survey_questions) }
+    it { is_expected.to have_many(:survey_submissions) }
+  end
+
+  describe 'validation' do
+    it { is_expected.to validate_presence_of(:title) }
+  end
+
+  describe '#active?' do
+    it { expect(survey_active.active?).to eq true }
+    it { expect(survey_inactive.active?).to eq false }
+    it 'returns false, if start_date is not set' do
+      expect(create(:survey, start_date: nil, end_date: Date.current + 1.day).active?).to eq false
+    end
+
+    it 'returns false, if end_date is not set' do
+      expect(create(:survey, start_date: Date.current + 1.day, end_date: nil).active?).to eq false
+    end
+  end
+end