Added some missing model specs + PaperTrail session fix

spec/models/registrar_spec.rb

@@ -30,4 +30,31 @@ describe Registrar do
       @registrar.errors[:billing_email].should == ['is invalid']
     end
   end
+
+  context 'with valid attributes' do
+    before :all do
+      @registrar = Fabricate(:registrar)
+    end
+
+    it 'should be valid' do
+      @registrar.valid?
+      @registrar.errors.full_messages.should match_array([])
+    end
+
+    it 'should be valid twice' do
+      @registrar = Fabricate(:registrar)
+      @registrar.valid?
+      @registrar.errors.full_messages.should match_array([])
+    end
+
+    it 'should have one version' do
+      with_versioning do
+        @registrar.versions.should == []
+        @registrar.name = 'New name'
+        @registrar.save
+        @registrar.errors.full_messages.should match_array([])
+        @registrar.versions.size.should == 1
+      end
+    end
+  end
 end