DEV: Slight refactor and add specs for composer peek (#142)

Followup cf9fd864dd

spec/system/sidebar_topic_button_spec.rb

@@ -12,34 +12,44 @@ RSpec.describe "Sidebar New Topic Button", system: true do
     c
   end
 
-  before { sign_in(user) }
+  context "for signed in users" do
+    before { sign_in(user) }
 
-  it "renders the new topic button in the sidebar" do
-    visit("/latest")
-    expect(page).to have_css(".sidebar-new-topic-button__wrapper")
-    expect(page).to have_css(".sidebar-new-topic-button:not(.disabled)")
+    it "renders the new topic button in the sidebar" do
+      visit("/latest")
+      expect(page).to have_css(".sidebar-new-topic-button__wrapper")
+      expect(page).to have_css(".sidebar-new-topic-button:not(.disabled)")
+    end
+
+    it "opens the composer when clicked" do
+      visit("/")
+      find(".sidebar-new-topic-button").click
+      expect(page).to have_css("#reply-title")
+    end
+
+    it "shows draft menu when drafts exist" do
+      Draft.create!(user: user, draft_key: "topic_1", data: {})
+
+      visit("/")
+      expect(page).to have_css(".sidebar-new-topic-button__wrapper .topic-drafts-menu-trigger")
+    end
+
+    it "disables button when visiting read-only category" do
+      visit("/c/#{private_category.slug}/#{private_category.id}")
+
+      expect(page).to have_css(".sidebar-new-topic-button[disabled]")
+
+      visit("/c/#{category.slug}/#{category.id}")
+
+      expect(page).not_to have_css(".sidebar-new-topic-button[disabled]")
+    end
   end
 
-  it "opens the composer when clicked" do
-    visit("/")
-    find(".sidebar-new-topic-button").click
-    expect(page).to have_css("#reply-title")
-  end
-
-  it "shows draft menu when drafts exist" do
-    Draft.create!(user: user, draft_key: "topic_1", data: {})
-
-    visit("/")
-    expect(page).to have_css(".sidebar-new-topic-button__wrapper .topic-drafts-menu-trigger")
-  end
-
-  it "disables button when visiting read-only category" do
-    visit("/c/#{private_category.slug}/#{private_category.id}")
-
-    expect(page).to have_css(".sidebar-new-topic-button[disabled]")
-
-    visit("/c/#{category.slug}/#{category.id}")
-
-    expect(page).not_to have_css(".sidebar-new-topic-button[disabled]")
+  context "for anon" do
+    it "does not render the sidebar button for anons" do
+      visit("/latest")
+      expect(page).not_to have_css(".sidebar-new-topic-button__wrapper")
+      expect(page).not_to have_css(".sidebar-new-topic-button:not(.disabled)")
+    end
   end
 end