RSpecRails/NegationBeValid cop Error

[aahmad]

Hi,

We keep receiving this error when running against rspec files:

An error occurred while RSpecRails/NegationBeValid cop was inspecting [filename]

The actual test looks fine:

expect(form).to be_valid

Doesn't seem to be anything odd but I suspect it's blowing up trying to analyze that line (and others):

An error occurred while RSpecRails/NegationBeValid cop was inspecting test_spec.rb:420:26.
~/.rbenv/versions/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.75.8/lib/rubocop/cop/mixin/configurable_enforced_style.rb:81:in 'RuboCop::Cop::ConfigurableEnforcedStyle#style': undefined method 'to_sym' for nil (NoMethodError)

          s = cop_config[style_parameter_name].to_sym

        from ~/.rbenv/versions/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-rspec_rails-2.31.0/lib/rubocop/cop/rspec_rails/negation_be_valid.rb:62:in 'RuboCop::Cop::RSpecRails::NegationBeValid#offense?'
        from ~/.rbenv/versions/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-rspec_rails-2.31.0/lib/rubocop/cop/rspec_rails/negation_be_valid.rb:50:in 'RuboCop::Cop::RSpecRails::NegationBeValid#on_send'
        from ~/.rbenv/versions/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.75.8/lib/rubocop/cop/commissioner.rb:143:in 'Kernel#public_send'
        from ~/.rbenv/versions/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.75.8/lib/rubocop/cop/commissioner.rb:143:in 'block (2 levels) in RuboCop::Cop::Commissioner#trigger_restricted_cops'
        from ~/.rbenv/versions/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.75.8/lib/rubocop/cop/commissioner.rb:171:in 'RuboCop::Cop::Commissioner#with_cop_error_handling'
        from ~/.rbenv/versions/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.75.8/lib/rubocop/cop/commissioner.rb:142:in 'block in RuboCop::Cop::Commissioner#trigger_restricted_cops'
        from ~/.rbenv/versions/3.4.3/lib/ruby/gems/3.4.0/gems/rubocop-1.75.8/lib/rubocop/cop/commissioner.rb:141:in 'Array#each'

The versions of everything are:

1.75.8 (using Parser 3.3.8.0, Prism 1.4.0, rubocop-ast 1.46.0, 
analyzing as Ruby 3.4, running on ruby 3.4.3) [arm64-darwin23]

We are using the latest standardrb with the following config:

require:
  - standard
plugins:
  - rubocop-rails
  - rubocop-rspec
  - rubocop-capybara
  - rubocop-factory_bot
  - standard-custom
  - rubocop-performance
  - standard-performance
  - standard-rails
  - standard-rspec

Thank you!

[pirj]

Interesting!
Can you please set a breakpoint or add a puts statement at where it fails and post here what cop_config.inspect is?