问一个ruby的问题?报错

require 'test/unit'
require 'test/unit/ui/console/testrunner'

require '../api/a_fee'
require '../api/b_fee'

class FeeTestSuite
  def self.suite
     tsuite = Test::Unit::TestSuite.new(name='FeeTestSuite')
     tsuite << AFee.suite
     tsuite << BFee.suite
     return tsuite
  end
end

首先， 执行该脚本的时候， 会报错：

C:\Ruby21\bin\ruby.exe -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) C:/secretpjct/api/test_suite.rb
C:/Ruby21/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- testrunner (LoadError)
     from C:/Ruby21/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
     from C:/secretpjct/api/test_suite.rb:5:in `<top (required)>'
     from -e:1:in `load'
     from -e:1:in `<main>'

Process finished with exit code 1

然后， 我想知道， 当我去直接执行其中的a_fee.rb时， 可以执行，结果如：

Run options: 

# Running tests:

start test_basic_feed
Testing feedrequest: http://secret.com:80/feed?f=a&b=11
.

Finished tests in 1.134499s, 0.8814 tests/s, 29.9692 assertions/s.

1 tests, 34 assertions, 0 failures, 0 errors, 0 skips

ruby -v: ruby 2.1.4p265 (2014-10-27 revision 48166) [i386-mingw32]

Process finished with exit code 0

可是， 这个脚本里有一堆的断言，比如： assert product, "Check if there are products"，为什么没有在上面的结果里显示出这些message？

还有， 我修改了：

assert_match(/\d{5,7}/, (product%'/id').inner_text, "Checking id is a number with 5 to 7 digits")

assert_match(/\d{1,2}/, (product%'/id').inner_text, "Checking id is a number with 5 to 7 digits")

这时候， product id应该报不对才是，可是我去跑这个脚本时，依然全部通过：1 tests, 34 assertions, 0 failures, 0 errors, 0 skips

为什么啊？