[WIP][ci skip]Create feature

test/features/comment_creation_test.rb

@@ -0,0 +1,18 @@
+require 'test_helper'
+
+feature 'CommentCreation' do
+  scenario 'User create comment to post' do
+    stub_authentication_with 'alice'
+
+    visit post_path(post)
+
+    body = 'Lorem ipsum dolor sit amet'
+
+    fill_in 'comment_body', with: body
+    click_button 'create comment'
+
+    within '.comment__body' do
+      expect(page).must_have_content 'Lorem ipsum dolor sit amet'
+    end
+  end
+end