plentz/lol_dba

Checks that required_ruby_version of gemspec and TargetRubyVersion of .rubocop.yml are equal. Thereby, RuboCop to perform static analysis working on the version required by gemspec.

Example:

# When `TargetRubyVersion` of .rubocop.yml is `2.3`.
 
# bad
Gem::Specification.new do |spec|
  spec.required_ruby_version = '>= 2.2.0'
end
 
# bad
Gem::Specification.new do |spec|
  spec.required_ruby_version = '>= 2.4.0'
end
 
# good
Gem::Specification.new do |spec|
  spec.required_ruby_version = '>= 2.3.0'
end
 
# good
Gem::Specification.new do |spec|
  spec.required_ruby_version = '>= 2.3'
end
 
# good
Gem::Specification.new do |spec|
  spec.required_ruby_version = ['>= 2.3.0', '< 2.5.0']
end