activerecord test script for PR#45036 experimentation

insert_all_behavior.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile do
  source "https://rubygems.org"

  # gem "activerecord", github: "thomascountz/rails", ref: "5942211feba53c8deec8884bcee109a759c5e60d"
  gem "activerecord", path: "/worspaces/rails"
  gem "sqlite3"
  gem "pry" # <-- ADD THIS!!
end

require "active_record"
require "minitest/autorun"
require "logger"

ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :books, force: true do |t|
    t.string :name
  end
end

class Book < ActiveRecord::Base
  alias_attribute :title, :name
end

class BugTest < Minitest::Test
  def test_insert_all
    assert_raises(ActiveModel::UnknownAttributeError, "unknown attribute 'title' for Book.") do
      Book.insert_all [{ title: "Hello, Bug!" }]
    end
  end
end

pry_breakpoint_prompt.rb

From: /workspaces/rails/activerecord/lib/active_record/insert_all.rb:261 ActiveRecord::InsertAll::Builder#extract_types_from_columns_on:

    260: def extract_types_from_columns_on(table_name, keys:)
 => 261:   require 'pry'; binding.pry
    262:   columns = connection.schema_cache.columns_hash(table_name)
    263: 
    264:   unknown_column = (keys - columns.keys).first
    265:   raise UnknownAttributeError.new(model.new, unknown_column) if unknown_column
    266: 
    267:   keys.index_with { |key| model.type_for_attribute(key) }
    268: end

[1] pry(#<ActiveRecord::InsertAll::Builder>)> 

truncated_insert_all.rb

module ActiveRecord
  class InsertAll
    # ...snip...
    def extract_types_from_columns_on(table_name, keys:)
      require 'pry'; binding.pry # <-- THIS IS A BREAKPOINT
      columns = connection.schema_cache.columns_hash(table_name)

      unknown_column = (keys - columns.keys).first
      raise UnknownAttributeError.new(model.new, unknown_column) if unknown_column

      keys.index_with { |key| model.type_for_attribute(key) }
    end
  end
end