检查“销毁”依赖项时 HMT 测试失败

Question

我目前正在编写 RSpec 测试来验证 Rails 应用程序中的关联。具体来说，我试图通过 Artist_albums 连接表/模型确保 Artist 模型与专辑具有正确的关联。然而，尽管在我的模型中正确设置了关联，但我的测试还是失败了。

RSpec.describe Artist, type: :model do
  describe 'associations' do
    it 'should have albums through artist_albums' do
      artist_association = described_class.reflect_on_association(:albums)
  
      expect(artist_association.macro).to eq(:has_many)
      expect(artist_association.through_reflection.name).to eq(:artist_albums)
    end
  end
end

错误如下：

expect(album_association.options[:dependent]).to eq(:destroy)
     
expected: :destroy
  got: nil
     
(compared using ==)

型号：

class Artist < ApplicationRecord
  has_many :artist_albums
  has_many :albums, through: :artist_albums
end

class ArtistAlbum < ApplicationRecord
  belongs_to :artist
  belongs_to :album
end

class Album < ApplicationRecord
  has_many :artist_albums
  has_many :artists, through: :artist_albums
end

尽管按预期设置了关联，测试仍因错误而失败。我不知道为什么会发生这种情况。任何有关如何解决和解决此问题的见解或建议将不胜感激！谢谢你。

Answer 1

我需要调用

through_reflection

来访问选项哈希：

expect(artist_association.through_reflection.options[:dependent]).to eq(:destroy)