Add specs for AutoDevopsHelper

spec/helpers/auto_devops_helper_spec.rb

+require 'spec_helper'
+
+describe AutoDevopsHelper do
+  set(:project) { create(:project) }
+  set(:user) { create(:user) }
+
+  describe '.show_auto_devops_callout?' do
+    let(:allowed) { true }
+
+    before do
+      allow(helper).to receive(:can?).with(user, :admin_pipeline, project) { allowed }
+      allow(helper).to receive(:current_user) { user }
+    end
+
+    subject { helper.show_auto_devops_callout?(project) }
+
+    context 'when all conditions are met' do
+      it { is_expected.to eq(true) }
+    end
+
+    context 'when dismissed' do
+      before do
+        helper.request.cookies[:auto_devops_settings_dismissed] = 'true'
+      end
+
+      it { is_expected.to eq(false) }
+    end
+
+    context 'when user cannot admin project' do
+      let(:allowed) { false }
+
+      it { is_expected.to eq(false) }
+    end
+
+    context 'when auto devops is enabled system-wide' do
+      before do
+        stub_application_setting(auto_devops_enabled: true)
+      end
+
+      it { is_expected.to eq(false) }
+    end
+
+    context 'when auto devops is explicitly enabled for project' do
+      before do
+        project.create_auto_devops!(enabled: true)
+      end
+
+      it { is_expected.to eq(false) }
+    end
+
+    context 'when auto devops is explicitly disabled for project' do
+      before do
+        project.create_auto_devops!(enabled: false)
+      end
+
+      it { is_expected.to eq(false) }
+    end
+  end
+end