如何在 Rails Rspec 中使用 Scope 編寫唯一性測試用例

Question

我想為此驗證編寫 RSpec 測試，但它總是給我錯誤

validates :post_id, uniqueness: { scope: :user_id }

我正在使用這個解決方案，但它不起作用

it { is_expected.to validate_uniqueness_of(:post_id).scoped_to(:user_id, :created_at) }

錯誤

Like is expected to validate that :post_id is case-sensitively unique within the scope of :user_id and :created_at
  Failure/Error: it { is_expected.to validate_uniqueness_of(:post_id).scoped_to(:user_id, :created_at) }

    Expected Like to validate that :post_id is case-sensitively unique
    within the scope of :user_id and :created_at, but this could not be
    proved.
      Expected the validation to be scoped to :user_id and :created_at, but
      it was scoped to :user_id instead.

任何幫助

Answer 1

如果在 model 你有

validates :post_id, uniqueness: { scope: :user_id }

那么你需要在規格

it { is_expected.to validate_uniqueness_of(:post_id).scoped_to(:user_id) }

或者

it { should validate_uniqueness_of(:post_id).scoped_to(:user_id) }