rake cucumber is failed on Ruby 2.4

[junaruga]

Summary

bundle exec rake cucumber is failed on Ruby 2.4.

Expected Behavior

bundle exec rake cucumber is done successfully.

Current Behavior

bundle exec rake cucumber is failed.
bundle exec rake spec is done successfully.

Possible Solution

Fix tests

Steps to Reproduce (for bugs)

Patch this at first.
#1069

Then

$ bundle install --path vendor/bundle

$ bundle exec rake cucumber
...
Failing Scenarios:
cucumber features/docs/cli/dry_run.feature:50 # Scenario: In strict mode with an undefined step
cucumber features/docs/cli/showing_differences.feature:8 # Scenario: Run single failing scenario with default diff enabled 
cucumber features/docs/cli/strict_mode.feature:20 # Scenario: Fail with --strict due to undefined step
cucumber features/docs/cli/strict_mode.feature:35 # Scenario: Fail with --strict due to pending step
cucumber features/docs/defining_steps/nested_steps.feature:131 # Scenario: Undefined nested step
cucumber features/docs/defining_steps/table_diffing.feature:7 # Scenario: Extra row
cucumber features/docs/exception_in_after_step_hook.feature:24 # Scenario: Handle Exception in standard scenario step and carry on
cucumber features/docs/exception_in_after_step_hook.feature:57 # Scenario: Handle Exception in scenario outline table row and carry on
cucumber features/docs/exception_in_around_hook.feature:15 # Scenario: Exception before the test case is run
cucumber features/docs/exception_in_around_hook.feature:47 # Scenario: Exception after the test case is run
cucumber features/docs/exception_in_before_hook.feature:44 # Scenario: Handle Exception in Before hook for Scenario with Background
cucumber features/docs/formatters/json_formatter.feature:289 # Scenario: DocString
cucumber features/docs/formatters/junit_formatter.feature:178 # Scenario: pending and undefined steps with strict option should fail
cucumber features/docs/formatters/junit_formatter.feature:332 # Scenario: strict mode with --expand option, one feature, one scenario outline, four examples: one passing, one failing, one pending, one undefined
cucumber features/docs/formatters/pretty_formatter.feature:31 # Scenario: Hook output should be printed before hook exception
cucumber features/docs/getting_started.feature:7 # Scenario: Run Cucumber in an empty directory
cucumber features/docs/gherkin/background.feature:363 # Scenario: run a feature with a background that is pending
cucumber features/docs/writing_support_code/tagged_hooks.feature:34 # Scenario: omit tagged hook
cucumber features/docs/writing_support_code/tagged_hooks.feature:69 # Scenario: Omit example hook

199 scenarios (19 failed, 180 passed)
1177 steps (19 failed, 1 skipped, 1157 passed)

Context & Motivation

We are happy to run cucumber on Ruby 2.4.

Your Environment

• Version used:

$ ruby -v
ruby 2.4.0p0 (2016-12-24 revision 57164) [x86_64-linux]

$ bundle -v
Bundler version 1.13.7

• Operating System and version:

Fedora 24

• Link to your project:
  https://admin.fedoraproject.org/pkgdb/package/rpms/rubygem-cucumber/

[mattwynne]

Thanks for investigating @junaruga. First step here would be to open a WIP PR with the 2.4 build added to travis, so we can all see and talk about the failures. I haven't used 2.4 myself yet but I'm eager for us to support it ASAP.

[junaruga]

@mattwynne ok I will send PR adding Ruby 2.4.0 after #1069 is merged. thanks!

[junaruga]

@mattwynne ok. I created PR for that now, as I have heard json-1.8.6 (Ruby 2.4.0 compatibility) was released. thanks!
#1075

[junaruga]

It is fixed by #1079 #1080

[lock]

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