要求无法加载此类文件

Question

我在同一个目录中有以下 2 个文件：

churn.rb：

 subsystem_names = ['audit', 'fulfillment', 'persistence',    
                     'ui', 'util', 'inventory']
  start_date = month_before(Time.now)       

  puts header(start_date)                   
  subsystem_names.each do | name |
    puts subsystem_line(name, change_count_for(name))   
  end

churn_test.rb：

require "test/unit"
require "churn"    

class ChurnTests < Test::Unit::TestCase 

  def test_month_before_is_28_days
    assert_equal(Time.local(2005, 1, 1),
                 month_before(Time.local(2005, 1, 29)))
  end

end

当我运行churn_test.rb 时，出现以下错误：

/Users/ca/.rbenv/versions/2.1.1/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- churn (LoadError)
    from /Users/ca/.rbenv/versions/2.1.1/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from churn-tests.rb:8:in `<main>'

Answer 1

当您require sth 时，Ruby 在$LOAD_PATH ($:) 中搜索源代码。出于安全考虑，$LOAD_PATH 中不包含当前工作目录。您可以将目录显式添加到$LOAD_PATH

$: << File.dirname(__FILE__)

require 'churn'

或使用Kernel#require_relative 要求基于同一目录的模块：

require_relative "churn"