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Testing Paperclip File Upload Field Implementation in rails_admin

This test suite validates the Paperclip file upload functionality within the Rails Admin interface. It focuses on ensuring proper field rendering and configuration for file attachments, specifically testing the avatar upload capability in the user model.

Test Coverage Overview

The test coverage focuses on verifying the proper rendering of Paperclip file upload fields in the Rails Admin interface.

Tests file upload field presence in the user form
Validates avatar field configuration
Ensures proper DOM element generation

Implementation Analysis

The testing approach utilizes RSpec’s request specs to verify the UI elements and field configuration. It employs Rails Admin’s configuration DSL to set up the test scenario, focusing on field definition and rendering.

Uses RSpec request specs for integration testing
Implements page object pattern for UI verification
Leverages Rails Admin’s configuration blocks

Technical Details

RSpec for test framework
Capybara for page interaction
Rails Admin configuration DSL
Paperclip gem integration
Request spec type implementation

Best Practices Demonstrated

The test demonstrates clean and focused integration testing practices, with clear separation of concerns and precise assertions. It follows Rails Admin’s recommended configuration patterns while maintaining simplicity and readability.

Single responsibility principle in test cases
Clear setup and expectations
Proper use of subject blocks
Focused selector assertions

railsadminteam/rails_admin

spec/integration/fields/paperclip_spec.rb

            
# frozen_string_literal: true

require 'spec_helper'

RSpec.describe 'Paperclip field', type: :request do
  subject { page }

  it 'shows a file upload field' do
    RailsAdmin.config User do
      edit do
        field :avatar
      end
    end
    visit new_path(model_name: 'user')
    is_expected.to have_selector('input#user_avatar')
  end
end