Rails-API如何测试活动存储

require 'rails_helper'

RSpec.describe "Active Storage", type: :request do
  let(:user) { create(:user) }
  let(:file) { fixture_file_upload('files/test.jpg', 'image/jpeg') }

  before do
    sign_in user
  end
end

RSpec.describe Attachment, type: :model do
  it "attaches a file correctly" do
    attachment = build(:attachment, file: file)
    expect(attachment.file).to be_attached
  end
end

RSpec.describe "Attachments", type: :request do
  describe "POST /attachments" do
    it "creates a new attachment" do
      post "/attachments", params: { attachment: { file: file } }
      expect(response).to have_http_status(:created)
      expect(Attachment.last.file).to be_attached
    end
  end

  describe "GET /attachments/:id/download" do
    it "downloads the file" do
      attachment = create(:attachment, file: file)
      get "/attachments/#{attachment.id}/download"
      expect(response).to have_http_status(:ok)
      expect(response.content_type).to eq("image/jpeg")
    end
  end

  describe "DELETE /attachments/:id" do
    it "deletes the attachment" do
      attachment = create(:attachment, file: file)
      delete "/attachments/#{attachment.id}"
      expect(response).to have_http_status(:no_content)
      expect(Attachment.find_by(id: attachment.id)).to be_nil
    end
  end
end