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Step definitions with arguments fail with "No self_obj" #337

karlhe opened this Issue Mar 1, 2018 · 1 comment


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karlhe commented Mar 1, 2018


Any cucumber step that matches with a step definition will error out with something similar to this:

    When I go to the root page                                # features/step_definitions/web_steps.rb:29
      No self_obj (RuntimeError)
      /Users/karlhe/.gem/gems/cucumber-expressions-5.0.13/lib/cucumber/cucumber_expressions/argument.rb:31:in `value'
      /Users/karlhe/.gem/gems/cucumber-3.1.0/lib/cucumber/step_match.rb:18:in `block in args'
      org/jruby/ `map'
      /Users/karlhe/.gem/gems/cucumber-3.1.0/lib/cucumber/step_match.rb:17:in `args'
      /Users/karlhe/.gem/gems/cucumber-3.1.0/lib/cucumber/step_match.rb:97:in `deep_clone_args'
      /Users/karlhe/.gem/gems/cucumber-3.1.0/lib/cucumber/step_match.rb:29:in `invoke'
      /Users/karlhe/.gem/gems/cucumber-3.1.0/lib/cucumber/step_match.rb:24:in `block in activate'
      /Users/karlhe/.gem/gems/cucumber-core-3.1.0/lib/cucumber/core/test/action.rb:24:in `execute'
      /Users/karlhe/.gem/gems/cucumber-core-3.1.0/lib/cucumber/core/test/step.rb:32:in `execute'
      /Users/karlhe/.gem/gems/cucumber-core-3.1.0/lib/cucumber/core/test/runner.rb:104:in `execute'
      /Users/karlhe/.gem/gems/cucumber-core-3.1.0/lib/cucumber/core/test/runner.rb:51:in `execute'
      /Users/karlhe/.gem/gems/cucumber-core-3.1.0/lib/cucumber/core/test/runner.rb:27:in `test_step'
      /Users/karlhe/.gem/gems/cucumber-core-3.1.0/lib/cucumber/core/test/step.rb:17:in `describe_to'
      /Users/karlhe/.gem/gems/cucumber-core-3.1.0/lib/cucumber/core/test/case.rb:28:in `block in describe_to'
      org/jruby/ `each'
      /Users/karlhe/.gem/gems/cucumber-core-3.1.0/lib/cucumber/core/test/case.rb:27:in `block in describe_to'

Step definition:

When(/^(?:|I )go to (.+)$/) do |page_name|
  visit path_to(page_name)

Started when I upgraded to 3.1.0, does not happen on cucumber-ruby 3.0.2.
Likely has something to do with 3.0.2 using cucumber-expressions-4.0.4, and 3.1.0 using cucumber-expressions-5.0.13

Uses a step definition with no arguments works without any issues.

Possibly related:

Your Environment

  • Version used: cucumber-ruby 3.1.0
  • Operating System and version: macOS 10.13.3
  • JRuby

This comment has been minimized.


aslakhellesoy commented Mar 2, 2018

This issue was moved to cucumber/cucumber-ruby#1281

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