rails--rails/railties/test/application/model_initialization_test.rb

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require 'isolation/abstract_unit'
class PostTest < Test::Unit::TestCase
include ActiveSupport::Testing::Isolation
def setup
build_app
boot_rails
end
def test_reload_should_reload_constants
app_file "app/models/post.rb", <<-MODEL
class Post < ActiveRecord::Base
validates_acceptance_of :title, :accept => "omg"
end
MODEL
require "#{rails_root}/config/environment"
ActiveRecord::Base.establish_connection(:adapter => "sqlite3", :database => ":memory:")
ActiveRecord::Migration.verbose = false
ActiveRecord::Schema.define(:version => 1) do
create_table :posts do |t|
t.string :title
end
end
p = Post.create(:title => 'omg')
assert_equal 1, Post.count
assert_equal 'omg', p.title
p = Post.first
assert_equal 'omg', p.title
end
end