Disable editing of NetworkProviders except Nuage

app/helpers/application_helper/button/ems_network.rb

@@ -1,5 +1,9 @@
 class ApplicationHelper::Button::EmsNetwork < ApplicationHelper::Button::Basic
   def visible?
-    ::Settings.product.nuage
+    # Nuage is only provider that supports adding NetworkProvider manually
+    # therefore we hide drop-down option completely unless Nuage is enabled.
+    return ::Settings.product.nuage unless @record # add new
+
+    @record.supports?(:ems_network_new) # edit
   end
 end

spec/helpers/application_helper/toolbar/ems_network_center_spec.rb

@@ -0,0 +1,26 @@
+describe ApplicationHelper::Toolbar::EmsNetworkCenter do
+  let(:ems_network_vmdb)        { described_class.definition['ems_network_vmdb'] }
+  let(:ems_network_vmdb_choice) { ems_network_vmdb.buttons.detect { |b| b[:id] == 'ems_network_vmdb_choice' } }
+
+  describe 'Edit this Network Provider' do
+    let(:button_hash)   { ems_network_vmdb_choice[:items].detect { |b| b[:id] == 'ems_network_edit' } }
+    let(:button_klass)  { button_hash[:klass] }
+    let(:button)        { button_klass.new(nil, nil, {}, {}) }
+    let(:ems_nuage)     { FactoryGirl.create(:ems_nuage_network) }
+    let(:ems_openstack) { FactoryGirl.create(:ems_openstack) }
+
+    it 'appropriate button class' do
+      expect(button_klass).to eq(ApplicationHelper::Button::EmsNetwork)
+    end
+
+    it 'visible for nuage provider' do
+      button.instance_variable_set(:@record, ems_nuage)
+      expect(button.visible?).to eq(true)
+    end
+
+    it 'not visible for openstack provider' do
+      button.instance_variable_set(:@record, ems_openstack)
+      expect(button.visible?).to eq(false)
+    end
+  end
+end

spec/helpers/application_helper/toolbar/ems_networks_center_spec.rb

@@ -0,0 +1,24 @@
+describe ApplicationHelper::Toolbar::EmsNetworksCenter do
+  let(:ems_network_vmdb)        { described_class.definition['ems_network_vmdb'] }
+  let(:ems_network_vmdb_choice) { ems_network_vmdb.buttons.detect { |b| b[:id] == 'ems_network_vmdb_choice' } }
+
+  describe 'Add a New Network Provider' do
+    let(:button_hash)   { ems_network_vmdb_choice[:items].detect { |b| b[:id] == 'ems_network_new' } }
+    let(:button_klass)  { button_hash[:klass] }
+    let(:button)        { button_klass.new(nil, nil, {}, {}) }
+
+    it 'appropriate button class' do
+      expect(button_klass).to eq(ApplicationHelper::Button::EmsNetworkNew)
+    end
+
+    it 'visible when nuage provider enabled' do
+      allow(::Settings.product).to receive(:nuage).and_return(true)
+      expect(button.visible?).to eq(true)
+    end
+
+    it 'hidden when nuage provider disabled' do
+      allow(::Settings.product).to receive(:nuage).and_return(false)
+      expect(button.visible?).to eq(false)
+    end
+  end
+end