我对TDD很新,并选择使用上面提到的Gems。我想我已经正确设置了,因为我可以运行我的测试。但是,我无法弄清楚如何从db / seeds.rb填充我的测试数据库。当我调用
时rake db:seed RAILS_ENV=test
在终端中,我可以通过PGAdmin看到数据库中创建的行。但是,当我使用以下
运行我的测试时rake minitest:all
数据库最后变为空白,并且在我保存屏幕截图的测试中,数据库中的项目不会像我在开发时那样出现在前端。
我的test_helper.rb包含以下内容。
ENV["RAILS_ENV"] = "test"
require File.expand_path("../../config/environment", __FILE__)
require "rails/test_help"
require "minitest/rails"
require 'minitest/rails/capybara'
require 'minitest/focus'
require 'minitest/colorize'
Capybara.javascript_driver = :webkit
class ActiveSupport::TestCase
fixtures :all
DatabaseCleaner.strategy = :transaction
class MiniTest::Spec
before :each do
Rake::Task["db:seed"].invoke
DatabaseCleaner.start
end
after :each do
DatabaseCleaner.clean
end
end
end
对于一些额外的背景,我的db / seeds.rb文件(当使用rake手动播种时有效)
ProgramIndustry.delete_all
ProgramIndustry.create([
{ name: 'Accounting and finance'},
{ name: 'Banking'},
{ name: 'Construction'},
{ name: 'Education'}
])
为什么在测试开始时数据库不会用seeds.rb填充?
答案 0 :(得分:5)
您的数据库是空白的,因为您正在使用DatabaseCleaner,它会从数据库中删除数据。我假设这是你想要的test_helper.rb文件:
ENV["RAILS_ENV"] = "test"
require File.expand_path("../../config/environment", __FILE__)
require "rails/test_help"
require "minitest/rails"
require 'minitest/rails/capybara'
require 'minitest/focus'
require 'minitest/colorize'
Capybara.javascript_driver = :webkit
class ActiveSupport::TestCase
fixtures :all
DatabaseCleaner.strategy = :transaction
before do
DatabaseCleaner.start
Rake::Task["db:seed"].invoke # seed after starting
end
after do
DatabaseCleaner.clean
end
end
我不知道从before钩子调用db:seed任务,这似乎有点怀疑。但我不使用DatabaseCleaner,因为我更喜欢使用fixtures和ActiveSupport :: TestCase支持的事务。
我不知道你为什么使用DatabaseCleaner,但看到你在Minitest中使用RSpec语法,我假设你只是在尝试工作直到它们工作。我建议删除DatabaseCleaner并将所有测试数据放入fixture中并使用以下命令管理跨线程的数据库事务:
ENV["RAILS_ENV"] = "test"
require File.expand_path("../../config/environment", __FILE__)
require "rails/test_help"
require "minitest/rails"
require 'minitest/rails/capybara'
require 'minitest/focus'
require 'minitest/colorize'
class ActiveSupport::TestCase
fixtures :all
end
# Capybara driver
Capybara.javascript_driver = :webkit
# Make all database transactions use the same thread
ActiveRecord::ConnectionAdapters::ConnectionPool.class_eval do
def current_connection_id
Thread.main.object_id
end
end
如果您遇到问题,请考虑以下变化:
ENV["RAILS_ENV"] = "test"
require File.expand_path("../../config/environment", __FILE__)
require "rails/test_help"
require "minitest/rails"
require 'minitest/rails/capybara'
require 'minitest/focus'
require 'minitest/colorize'
class ActiveSupport::TestCase
fixtures :all
end
# Capybara driver
Capybara.javascript_driver = :webkit
# Make all database transactions use the same thread
class ActiveRecord::Base
mattr_accessor :shared_connection
@@shared_connection = nil
def self.connection
@@shared_connection || retrieve_connection
end
end
ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection