Make generated test work even when using virtual attributes

The virtual attributes(`attachment` and `rich_text`) can't set value
with `fill_in`. So avoid using it. Once #35885 is merged, will be
modified to use it.

Also, add checking attachment attached or not for avoiding
`DelegationError` when attachment didn't attach.

1 files changed, 7 insertions, 2 deletions

diff --git a/railties/lib/rails/generators/test_unit/scaffold/scaffold_generator.rb b/railties/lib/rails/generators/test_unit/scaffold/scaffold_generator.rb
index 6df50c3217..26002a0704 100644
--- a/railties/lib/rails/generators/test_unit/scaffold/scaffold_generator.rb
+++ b/railties/lib/rails/generators/test_unit/scaffold/scaffold_generator.rb
@@ -49,16 +49,21 @@ module TestUnit # :nodoc:
           attributes_names.map do |name|
             if %w(password password_confirmation).include?(name) && attributes.any?(&:password_digest?)
               ["#{name}", "'secret'"]
-            else
+            elsif !virtual?(name)
               ["#{name}", "@#{singular_table_name}.#{name}"]
             end
-          end.sort.to_h
+          end.compact.sort.to_h
         end
 
         def boolean?(name)
           attribute = attributes.find { |attr| attr.name == name }
           attribute&.type == :boolean
         end
+
+        def virtual?(name)
+          attribute = attributes.find { |attr| attr.name == name }
+          attribute&.virtual?
+        end
     end
   end
 end