Move login items tests to the component

This way we reduce the number of system tests or, in some cases,
requests during system tests, making the tests faster.

We're still testing the interaction with the menu when users have the
right permissions.

spec/components/layout/admin_login_items_component_spec.rb

@@ -0,0 +1,132 @@
+require "rails_helper"
+
+describe Layout::AdminLoginItemsComponent do
+  it "is not rendered for anonymous users" do
+    render_inline Layout::AdminLoginItemsComponent.new(nil)
+
+    expect(page).not_to be_rendered
+  end
+
+  it "is not rendered for regular users" do
+    user = create(:user, :level_two)
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).not_to be_rendered
+  end
+
+  it "shows access to all places except officing to administrators" do
+    user = create(:administrator).user
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).to have_link "Menu"
+
+    page.find("ul") do |menu|
+      expect(menu).to have_link "Administration"
+      expect(menu).to have_link "Moderation"
+      expect(menu).to have_link "Valuation"
+      expect(menu).to have_link "Management"
+      expect(menu).to have_link "SDG content"
+      expect(menu).to have_link count: 5
+    end
+  end
+
+  it "shows the moderation link to moderators" do
+    user = create(:moderator).user
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).to have_link "Menu"
+
+    page.find("ul") do |menu|
+      expect(menu).to have_link "Moderation"
+      expect(menu).to have_link count: 1
+    end
+  end
+
+  it "shows the valuation link to valuators" do
+    user = create(:valuator).user
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).to have_link "Menu"
+
+    page.find("ul") do |menu|
+      expect(menu).to have_link "Valuation"
+      expect(menu).to have_link count: 1
+    end
+  end
+
+  it "shows the management link to managers" do
+    user = create(:manager).user
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).to have_link "Menu"
+
+    page.find("ul") do |menu|
+      expect(menu).to have_link "Management"
+      expect(menu).to have_link count: 1
+    end
+  end
+
+  it "shows the SDG content link to SDG managers" do
+    user = create(:sdg_manager).user
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).to have_link "Menu"
+
+    page.find("ul") do |menu|
+      expect(menu).to have_link "SDG content"
+      expect(menu).to have_link count: 1
+    end
+  end
+
+  it "does not show the SDG content link when the SDG feature is disabled" do
+    Setting["feature.sdg"] = false
+    user = create(:administrator).user
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).to have_link "Menu"
+
+    page.find("ul") do |menu|
+      expect(menu).to have_link "Administration"
+      expect(menu).to have_link "Moderation"
+      expect(menu).to have_link "Valuation"
+      expect(menu).to have_link "Management"
+      expect(menu).to have_link count: 4
+    end
+  end
+
+  it "shows the officing link to poll officers" do
+    user = create(:poll_officer, polls: [create(:poll)]).user
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).to have_link "Menu"
+
+    page.find("ul") do |menu|
+      expect(menu).to have_link "Polling officers"
+      expect(menu).to have_link count: 1
+    end
+  end
+
+  it "shows several links to users with several roles" do
+    user = create(:user)
+    create(:moderator, user: user)
+    create(:manager, user: user)
+
+    render_inline Layout::AdminLoginItemsComponent.new(user)
+
+    expect(page).to have_link "Menu"
+
+    page.find("ul") do |menu|
+      expect(menu).to have_link "Moderation"
+      expect(menu).to have_link "Management"
+      expect(menu).to have_link count: 2
+    end
+  end
+end