Add aria-pressed to in comments votes component

In order to the users using screen readers know whether the button is pressed
or not.

spec/components/comments/votes_component_spec.rb

@@ -0,0 +1,53 @@
+require "rails_helper"
+
+describe Comments::VotesComponent do
+  let(:user) { create(:user) }
+  let(:comment) { create(:comment, user: user) }
+  let(:component) { Comments::VotesComponent.new(comment) }
+
+  describe "aria-pressed attribute" do
+    it "is true when the in-favor button is pressed" do
+      comment.vote_by(voter: user, vote: "yes")
+      sign_in(user)
+
+      render_inline component
+
+      page.find(".in-favor") do |in_favor_block|
+        expect(in_favor_block).to have_css "button[aria-pressed='true']"
+      end
+
+      page.find(".against") do |against_block|
+        expect(against_block).to have_css "button[aria-pressed='false']"
+      end
+    end
+
+    it "is true when the against button is pressed" do
+      comment.vote_by(voter: user, vote: "no")
+      sign_in(user)
+
+      render_inline component
+
+      page.find(".in-favor") do |in_favor_block|
+        expect(in_favor_block).to have_css "button[aria-pressed='false']"
+      end
+
+      page.find(".against") do |against_block|
+        expect(against_block).to have_css "button[aria-pressed='true']"
+      end
+    end
+
+    it "is false when neither the 'in-favor' button nor the 'against' button are pressed" do
+      sign_in(user)
+
+      render_inline component
+
+      page.find(".in-favor") do |in_favor_block|
+        expect(in_favor_block).to have_css "button[aria-pressed='false']"
+      end
+
+      page.find(".against") do |against_block|
+        expect(against_block).to have_css "button[aria-pressed='false']"
+      end
+    end
+  end
+end