Extract component for budget actions

We can omit passing a parameter to the helper method thanks to that, and
we group related code together.

spec/components/admin/budgets/table_actions_component_spec.rb

@@ -0,0 +1,30 @@
+require "rails_helper"
+
+describe Admin::Budgets::TableActionsComponent, type: :component do
+  let(:budget) { create(:budget) }
+  let(:component) { Admin::Budgets::TableActionsComponent.new(budget) }
+
+  it "renders links to edit budget, manage investments and edit groups and manage ballots" do
+    render_inline component
+
+    expect(page).to have_css "a", count: 4
+    expect(page).to have_link "Manage projects", href: /investments/
+    expect(page).to have_link "Edit headings groups", href: /groups/
+    expect(page).to have_link "Edit budget", href: /edit/
+    expect(page).to have_link "Admin ballots"
+  end
+
+  it "renders link to create new poll for budgets without polls" do
+    render_inline component
+
+    expect(page).to have_css "a[href*='polls'][data-method='post']", text: "Admin ballots"
+  end
+
+  it "renders link to manage ballots for budgets with polls" do
+    budget.poll = create(:poll, budget: budget)
+
+    render_inline component
+
+    expect(page).to have_link "Admin ballots", href: /booth_assignments/
+  end
+end