Add ISO 8601 validations

spec/models/keyrelay_spec.rb

@@ -0,0 +1,23 @@
+require 'rails_helper'
+
+describe Keyrelay do
+  it { should belong_to(:domain) }
+  it { should belong_to(:requester) }
+  it { should belong_to(:accepter) }
+
+  it 'is in pending status' do
+    kr = Fabricate(:keyrelay)
+    expect(kr.status).to eq('pending')
+  end
+
+  it 'is in expired status' do
+    kr = Fabricate(:keyrelay, pa_date: DateTime.now - 2.weeks)
+    expect(kr.status).to eq('expired')
+  end
+
+  it 'does not accept invalid relative expiry' do
+    kr = Fabricate.build(:keyrelay, expiry_relative: 'adf')
+    expect(kr.save).to eq(false)
+    expect(kr.errors[:expiry_relative].first).to eq('Expiry relative must be compatible to ISO 8601')
+  end
+end