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NoMethodError: undefined `mock 'method for minitest and mocha

I am developing a gem for Rails 3 and have encountered an error in my test suit when running it under Ruby 1.8.7 on travis-ci.org:

/home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:874:in `_run_suite': undefined method `run' for #<TestActivist:0xb6936dd4> (NoMethodError) 69 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:866:in `map' 70 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:866:in `_run_suite' 71 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:853:in `_run_suites' 72 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:853:in `map' 73 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:853:in `_run_suites' 74 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:826:in `_run_anything' 75 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:1015:in `run_tests' 76 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:1002:in `send' 77 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:1002:in `_run' 78 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:1001:in `each' 79 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:1001:in `_run' 80 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:990:in `run' 81 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/minitest-3.5.0/lib/minitest/unit.rb:748:in `autorun' 82 from /home/travis/.rvm/gems/ruby-1.8.7-p370/gems/rake-0.9.2.2/lib/rake/rake_test_loader.rb:21 83rake aborted! 84Command failed with status (1): [/home/travis/.rvm/rubies/ruby-1.8.7-p370/b...]

this is a link to a failed job: https://travis-ci.org/#!/pokonski/public_activity/jobs/2586051

Everything works fine in Ruby> 1.8.7.

My corresponding part .gemspec:

  s.add_dependency 'activerecord', '>= 3.0.0' s.add_dependency 'activesupport', '>= 3.0.0' s.add_dependency 'actionpack', '>= 3.0.0' s.add_dependency 'i18n', '>= 0.5.0' if RUBY_VERSION == "1.8.7" s.add_development_dependency 'minitest', '>= 3.2.0' else s.add_development_dependency 'simplecov', '>= 0.6.4' end s.add_development_dependency 'bundler', '>= 1.1' s.add_development_dependency 'rake', '>= 0.9' s.add_development_dependency 'sqlite3' s.add_development_dependency 'mocha', '>= 0.12.1' s.add_development_dependency 'rails', '>= 3.0.0' # generators test

and gemfile:

 source :rubygems gemspec gem 'yard'

Interestingly, when running tests locally with ruby-1.8.7-p370, I get an error message with another missing method:

 test_resolving_values(TestCommon): NoMethodError: undefined method `mock' for #<TestCommon:0x7ffdc8a79388> /home/piotrek/projekty/public_activity/test/test_common.rb:85:in `test_resolving_values'

Additional source code for error strings: https://github.com/pokonski/public_activity/blob/master/test/test_common.rb#L85

Does anyone know what is going on?

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1 answer

It turns out this is because of test_generators.rb, which used Rails :: Generators :: TestCase, which in turn is inherited from TestUnit.

Because of this, Mocha had the wrong monkey patch Test :: Unit instead of MiniTest. The solution was to require test_helper in test_generators.rb and force the MiniTest gem to version 3.2.0.

Complete solution in this commit: https://github.com/pokonski/public_activity/commit/731e953068297c7aa6f6f7e2b2251c79843943a1

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Source: https://habr.com/ru/post/1233905/

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