add controller tests

test/models/comment_test.rb

@@ -2,14 +2,14 @@ require "test_helper"
 
 class CommentTest < ActiveSupport::TestCase
   test "should be valid with a user, body, and commentable" do
-    user = users(:one)
+    user = users(:admin_user)
     entry = entries(:one)
     comment = Comment.new(user: user, body: "This is a comment.", commentable: entry)
     assert comment.valid?
   end
 
   test "should be invalid without a body" do
-    user = users(:one)
+    user = users(:admin_user)
     entry = entries(:one)
     comment = Comment.new(user: user, commentable: entry)
     assert_not comment.valid?
@@ -22,7 +22,7 @@ class CommentTest < ActiveSupport::TestCase
   end
 
   test "should be invalid without a commentable" do
-    user = users(:one)
+    user = users(:admin_user)
     comment = Comment.new(user: user, body: "This is a comment.")
     assert_not comment.valid?
   end