Add test cases.

https://bugzilla.redhat.com/show_bug.cgi?id=1511126

spec/models/custom_button_event_spec.rb

@@ -0,0 +1,42 @@
+describe CustomButtonEvent do
+  let(:custom_button) { FactoryGirl.create(:custom_button, :applies_to_class => "Vm", :name => "Test Button") }
+  let(:ae_entry_point) { "/SYSTEM/PROCESS/Request" }
+  let(:cb_event) do
+    FactoryGirl.create(:custom_button_event,
+                       :full_data => {
+                         :automate_entry_point => ae_entry_point,
+                         :button_id            => custom_button.id,
+                         :button_name          => custom_button.name
+                       })
+  end
+
+  context '#automate_entry_point' do
+    it 'returns a string' do
+      expect(cb_event.automate_entry_point).to eq(ae_entry_point)
+    end
+
+    it 'returns an empty string' do
+      cb_event.full_data.delete(:automate_entry_point)
+      cb_event.save!
+
+      expect(cb_event.automate_entry_point).to eq("")
+    end
+  end
+
+  context '#button_name' do
+    it "returns button's current name" do
+      expect(cb_event.button_name).to eq("Test Button")
+
+      custom_button.update_attributes(:name => "New Button Name")
+      expect(cb_event.button_name).to eq("New Button Name")
+    end
+
+    it 'returns button name from event data' do
+      cb_event.full_data[:button_id] = custom_button.id - 1
+      cb_event.save!
+      custom_button.update_attributes(:name => "New Button Name")
+
+      expect(cb_event.button_name).to eq("Test Button")
+    end
+  end
+end