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Testing ActiveRecord Safe Send Implementation in rails_admin

This test suite examines the ActiveRecord extensions implemented in Rails Admin, specifically focusing on the safe_send method functionality. The tests validate the optimized attribute reading behavior to ensure efficient database interactions and prevent redundant calls.

Test Coverage Overview

The test coverage focuses on the safe_send method implementation in ActiveRecord extensions.

Key areas tested include:

Single call verification for read_attribute method
Attribute value retrieval accuracy
Method call optimization

Implementation Analysis

The testing approach utilizes RSpec’s expectation framework to verify method call counts and return values.

Technical implementation includes:

Method stubbing with exact call counting
Original method preservation and delegation
Return value verification

Technical Details

Testing tools and configuration:

RSpec for test framework
ActiveRecord integration testing
Method spy implementation
Custom initializer loading

Best Practices Demonstrated

The test suite demonstrates several testing best practices for Rails applications.

Notable practices include:

Isolated test scope
Precise method call verification
Original functionality preservation
Clear test case organization

railsadminteam/rails_admin

spec/rails_admin/active_record_extension_spec.rb

            
# frozen_string_literal: true

require 'spec_helper'
require File.expand_path('../../config/initializers/active_record_extensions', __dir__)

RSpec.describe 'ActiveRecord::Base', active_record: true do
  describe '#safe_send' do
    it 'only calls #read_attribute once' do
      @player = Player.new
      @player.number = 23
      original_method = @player.method(:read_attribute)
      expect(@player).to receive(:read_attribute).exactly(1).times do |*args|
        original_method.call(*args)
      end
      expect(@player.safe_send(:number)).to eq(23)
    end
  end
end