method_missing': undefined method in factory (NoMethodError) factory bot rails

# 1. Create a factory for the model (e.g., User) using FactoryBot
FactoryBot.define do
  factory :user do
    # Define attributes for the user model
    name { "John Doe" }
    email { "[email protected]" }
  end
end

# 2. Attempt to create an instance of the model using the factory
user_instance = FactoryBot.create(:user)

# 3. Define a method_missing method in the User model
class User
  def method_missing(method_name, *args, &block)
    # Attempt to find a trait with the same name as the missing method
    if FactoryBot::DefinitionProxy.method_defined_within_traits?(method_name)
      # If found, apply the trait and recreate the instance
      FactoryBot.create(:user, method_name)
    else
      # If not found, raise a NoMethodError
      super
    end
  end
end

# 4. Call the missing method (e.g., missing_trait) on the user instance
user_instance.missing_trait

# 5. Encounter a NoMethodError since the missing_trait method is undefined
#   within the User model and no corresponding trait is defined in the factory