Fix Lint/ConstantDefinitionInBlock cop (#24763)

spec/models/concerns/remotable_spec.rb

@@ -3,48 +3,47 @@
 require 'rails_helper'
 
 RSpec.describe Remotable do
-  class Foo
-    def initialize
-      @attrs = {}
-    end
+  let(:foo_class) do
+    Class.new do
+      def initialize
+        @attrs = {}
+      end
 
-    def [](arg)
-      @attrs[arg]
-    end
+      def [](arg)
+        @attrs[arg]
+      end
 
-    def []=(arg1, arg2)
-      @attrs[arg1] = arg2
-    end
+      def []=(arg1, arg2)
+        @attrs[arg1] = arg2
+      end
 
-    def hoge=(arg); end
+      def hoge=(arg); end
 
-    def hoge_file_name; end
+      def hoge_file_name; end
 
-    def hoge_file_name=(arg); end
+      def hoge_file_name=(arg); end
 
-    def has_attribute?(arg); end
+      def has_attribute?(arg); end
 
-    def self.attachment_definitions
-      { hoge: nil }
-    end
-  end
-
-  before do
-    class Foo
-      include Remotable
-
-      remotable_attachment :hoge, 1.kilobyte
+      def self.attachment_definitions
+        { hoge: nil }
+      end
     end
   end
 
   let(:attribute_name) { "#{hoge}_remote_url".to_sym }
   let(:code)           { 200 }
   let(:file)           { 'filename="foo.txt"' }
-  let(:foo)            { Foo.new }
+  let(:foo)            { foo_class.new }
   let(:headers)        { { 'content-disposition' => file } }
   let(:hoge)           { :hoge }
   let(:url)            { 'https://google.com' }
 
+  before do
+    foo_class.include described_class
+    foo_class.remotable_attachment :hoge, 1.kilobyte
+  end
+
   it 'defines a method #hoge_remote_url=' do
     expect(foo).to respond_to(:hoge_remote_url=)
   end