Edit existing specs of _new and _discover button classes

spec/helpers/application_helper/buttons/ab_button_new_spec.rb

@@ -1,16 +1,21 @@
 describe ApplicationHelper::Button::AbButtonNew do
-  subject { described_class.new(view_context, {}, {}, {}) }
+  let(:view_context) { setup_view_context_with_sandbox(:active_tree => tree) }
+  let(:tree) { :not_ab_tree }
+  let(:lastaction) { '' }
+  let(:display) { '' }
+  let(:x_node) { 'xx-ab_12345' }
+  subject { described_class.new(view_context, {}, {'lastaction' => lastaction, 'display' => display}, {}) }
 
   before { allow(view_context).to receive(:x_node).and_return(x_node) }
 
+  it_behaves_like 'a _new or _discover button'
+
   describe '#visible?' do
     context 'when x_active_tree != :ab_tree' do
-      let(:view_context) { setup_view_context_with_sandbox(:active_tree => :not_ab_tree) }
-      let(:x_node) { 'xx-ab_11784' }
       it { expect(subject.visible?).to be_truthy }
     end
     context 'when x_active_tree == :ab_tree' do
-      let(:view_context) { setup_view_context_with_sandbox(:active_tree => :ab_tree) }
+      let(:tree) { :ab_tree }
       context ' and x_node cannot be split into 2 parts' do
         let(:x_node) { 'xx-ab' }
         it { expect(subject.visible?).to be_truthy }
@@ -20,7 +25,6 @@
         it { expect(subject.visible?).to be_truthy }
       end
       context 'and x_node looks like xx-ab_12345' do
-        let(:x_node) { 'xx-ab_12345' }
         it { expect(subject.visible?).to be_falsey }
       end
     end

spec/helpers/application_helper/buttons/customization_template_new_spec.rb

@@ -1,12 +1,16 @@
 describe ApplicationHelper::Button::CustomizationTemplateNew do
   let(:view_context) { setup_view_context_with_sandbox({}) }
-  subject { described_class.new(view_context, {}, {}, {}) }
+  let(:lastaction) { '' }
+  let(:display) { '' }
+  let(:x_node) { 'root' }
+  subject { described_class.new(view_context, {}, {'lastaction' => lastaction, 'display' => display}, {}) }
 
   before { allow(view_context).to receive(:x_node).and_return(x_node) }
 
+  it_behaves_like 'a _new or _discover button'
+
   describe '#visible?' do
     context 'when root node is active' do
-      let(:x_node) { 'root' }
       it { expect(subject.visible?).to be_truthy }
     end
     context 'when system node is active' do

spec/helpers/application_helper/buttons/widget_new_spec.rb

@@ -1,16 +1,20 @@
 describe ApplicationHelper::Button::WidgetNew do
   let(:view_context) { setup_view_context_with_sandbox({}) }
-  subject { described_class.new(view_context, {}, {}, {}) }
+  let(:lastaction) { '' }
+  let(:display) { '' }
+  let(:x_node) { 'not_root' }
+  subject { described_class.new(view_context, {}, {'lastaction' => lastaction, 'display' => display}, {}) }
 
   before { allow(view_context).to receive(:x_node).and_return(x_node) }
 
+  it_behaves_like 'a _new or _discover button'
+
   describe '#visible?' do
     context 'when x_node == root' do
       let(:x_node) { 'root' }
       it { expect(subject.visible?).to be_falsey }
     end
     context 'when x_node != root' do
-      let(:x_node) { 'not_root' }
       it { expect(subject.visible?).to be_truthy }
     end
   end