How to work with Active Storage attachment in RSpec

Ly Channa

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Jul 30, 2020

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class ShipmentItem < ApplicationRecord  has_one_attached :image  validates :width, presence: true, if: ->(item) { !item.image.attached?}end
it 'is valid if image is attached' do  file = Rails.root.join('spec', 'support', 'assets', 'shipment_item', 'wine-box.jpeg')image = ActiveStorage::Blob.create_after_upload!( io: File.open(file, 'rb'),  filename: 'wine-box.jpeg',  content_type: 'image/jpeg' # Or figure it out from `name` if you have non-JPEGs).signed_id  shipment_item = ShipmentItem.new(image: image)  expect(shipment_item.valid?).to eq trueend