开拓者和最小- NameError:未初始化常数Minitest

Question

环境：

rails -v
Rails 4.2.5

ruby -v
ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-linux-gnu]

bundle list trailblazer
trailblazer-1.1.0

我正在研究“开拓者”一书中的例子，我遇到了一种我不明白的情况。按照书中给出的设置，当我使用bundle rake test/concerns/ar_invoice/crud_test.rb运行特定测试时，它将按预期运行。但是，如果我只运行bundle rake test，那么我会看到以下内容：

bundle rake test
rake aborted!
NameError: uninitialized constant MiniTest
./test/concepts/ar_invoice/crud_test.rb:1:in `<top (required)>'
./bundle/lib/gems/railties-4.2.5/lib/rails/test_unit/sub_test_task.rb:114:in `block (3 levels) in define'
./bundle  /lib/gems/railties-4.2.5/lib/rails/test_unit/sub_test_task.rb:114:in `each'
./bundle/lib/gems/railties-4.2.5/lib/rails/test_unit/sub_test_task.rb:114:in `block (2 levels) in define'
./bundle/lib/gems/railties-4.2.5/lib/rails/test_unit/sub_test_task.rb:113:in `each'
./bundle/lib/gems/railties-4.2.5/lib/rails/test_unit/sub_test_task.rb:113:in `block in define'
./bundle/lib/gems/railties-4.2.5/lib/rails/test_unit/sub_test_task.rb:20:in `invoke_rake_task'
./bundle/lib/gems/railties-4.2.5/lib/rails/test_unit/testing.rake:8:in `block in   <top (required)>'
Tasks: TOP => test:run
(See full trace by running task with --trace)

文件crud_test.rb包含以下内容：

cat test/concepts/ar_invoice/crud_test.rb

class ARInvoiceCrudTest < MiniTest::Spec
  describe( "Create" ) do
    it( "persists valid" ) do
      ar_invoice = ARInvoice::Create.(
        :ar_invoice => { :invoice_number => 101,
                         :client_number => 1234
        }
      ).model

      ar_invoice.persisted?.must_equal( true )
      ar_invoice.invoice_number.must_equal( 102 )
      ar_invoice.client_number.must_equal( 5678 )
    end
  end
end

并且.test/test_helper.rb如下所示：

cat test/test_helper.rb

ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)

require 'rails/test_help'
require 'minitest/spec'
require "minitest/autorun"

require "trailblazer/rails/test/integration"

而env | grep RAILS_ENV不产生输出。

我在剧组里还缺什么？运行bundle rake test不应该简单地获取crud_test.rb文件并运行测试，与在命令行上显式命名该文件的时间相同吗？

Answer 1

这就是答案：

当然，在每个测试文件之上添加require 'test_helper' ！