Rspec cmds

rails_helper_config.md

Line	Meaning
require 'spec_helper'	Loads the basic RSpec configuration.
ENV['RAILS_ENV']	Ensures Rails runs in the test environment.
require_relative '../config/environment'	Loads the Rails application environment.
abort("The Rails environment is running in production mode!") if Rails.env.production?	Prevents tests from running in production.
require 'rspec/rails'	Integrates RSpec with Rails features (models, controllers, etc.).
Rails.root.glob('spec/support/**/*.rb').sort_by(&:to_s).each {	Loads all helper/support files in spec/support.
begin ... rescue ... end	Ensures migrations are up to date before running tests; aborts if pending migrations exist.
ActiveRecord::Migration.maintain_test_schema!	Applies any pending migrations to the test database.
RSpec.configure do	config - Opens the main RSpec configuration block.
config.fixture_paths = [Rails.root.join('spec/fixtures')]	Sets the location for test fixtures (sample data).
config.use_transactional_fixtures = true	Wraps each test in a database transaction for isolation.
config.filter_rails_from_backtrace!	Hides Rails internal frames from test failure backtraces.
end	Closes the RSpec.configure block.