Shoulda::Matchers::ActiveRecord::ValidateUniquenessOfMatcher::Existing

Answer

Create some record before test case

require "rails_helper"

RSpec.describe User, type: :model do
  describe "validations" do
    # Some way create one record
    before do
      User.create(name: "Alice #{rand(99999999)}")
      # FactoryBot.create :user
    end

    it { should validate_uniqueness_of(:name) }
  end
end

Error

     Shoulda::Matchers::ActiveRecord::ValidateUniquenessOfMatcher::ExistingRecordInvalid:
       validate_uniqueness_of works by matching a new record against an
       existing record. If there is no existing record, it will create one
       using the record you provide.

       While doing this, the following error was raised:

...

       The best way to fix this is to provide the matcher with a record where
       any required attributes are filled in with valid values beforehand.

Original by Github issue

https://github.com/YumaInaura/YumaInaura/issues/3071

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公開日時

2020-04-14