test_helper don't load when I make a test

问题

I need make a test of a model, but when I do this:

ruby test/unit/user_test.rb 

I have also tried with other methods:

ruby -I test test/unit/user_test.rb
rake test:units TEST=test/unit/user_test.rb

But anyone make the test and said:

test/unit/user_test.rb:1:in `require': no such file to load -- test_helper (LoadError)

Or like.

This is part of the code (only the beginning):

require 'test_helper'

class UserTest < Test::Unit::TestCase
  self.use_instantiated_fixtures  = true
  fixtures :users

  def test_auth 
    #check that we can login we a valid user 
    assert_equal  @bob, User.authenticate("bob", "test")    
    #wrong username
    assert_nil    User.authenticate("nonbob", "test")
    #wrong password
    assert_nil    User.authenticate("bob", "wrongpass")
    #wrong login and pass
    assert_nil    User.authenticate("nonbob", "wrongpass")
  end

Yours sincerely

回答1:

Try this require:

require File.dirname(__FILE__) + '/../test_helper'

回答2:

With Ruby 1.9.3 and Rails 3.2.8, if you run your test cases with

$ rake test

it won't be an issue.

回答3:

for a single file

$ rake test TEST=test/unit/glosentry_test.rb

for all file

$ rake test

来源：https://stackoverflow.com/questions/5520484/test-helper-dont-load-when-i-make-a-test