undefined method _run_suite' for class Test::Unit::Runner' (NameError)

[pocman]

Hi,

I have this issue running ruby test.rb *

ruby test.rb ./csa_cpp
Warning: you should require 'minitest/autorun' instead.
Warning: or add 'gem "minitest"' before 'require "minitest/autorun"'
From:
  /Users/poc/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/test/unit.rb:1:in `<top (required)>'
  test.rb:3:in `<main>'
MiniTest::Unit::TestCase is now Minitest::Test. From /Users/poc/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/test/unit/testcase.rb:8:in `<module:Unit>'
/Users/poc/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/test/unit.rb:676:in `<class:Runner>': undefined method `_run_suite' for class `Test::Unit::Runner' (NameError)
    from /Users/poc/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/test/unit.rb:261:in `<module:Unit>'
    from /Users/poc/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/test/unit.rb:15:in `<module:Test>'
    from /Users/poc/.rvm/rubies/ruby-2.1.5/lib/ruby/2.1.0/test/unit.rb:7:in `<top (required)>'
    from /Users/poc/.rvm/rubies/ruby-2.1.5/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/poc/.rvm/rubies/ruby-2.1.5/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from test.rb:3:in `<main>'

I can run ruby bench.rb *

[duboviy]

Need to be installed minitest 4.7.5 version