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Ruby

Ruby static code analysis

Unique rules to find Bugs, Security Hotspots, and Code Smells in your RUBY code

  • All rules 75
  • Bug17
  • Security Hotspot2
  • Code Smell56
 
Tags
    Impact
      Clean code attribute
        1. Before destroy callbacks should use proper halt mechanism

           Bug
        2. Rails applications should define a root route with proper controller#action syntax

           Bug
        3. Non-mutating sort methods should have their return values used

           Bug
        4. "return" statements should not be used in blocks

           Bug
        5. Rails API controllers using "respond_to" should include "ActionController::MimeResponds"

           Bug
        6. Environment variables should be validated or have default values

           Bug
        7. Regular expressions should not be passed to "String#include?"

           Bug
        8. Symbol keys containing hyphens should be quoted

           Bug
        9. Column names should not use SQL reserved words

           Bug
        10. ActiveRecord models should override "as_json" instead of "to_json" for custom JSON serialization

           Bug
        11. All branches in a conditional structure should not have exactly the same implementation

           Bug
        12. Non-existent operators like "=+" should not be used

           Bug
        13. Related "if/elsif" statements and "when" in a "case" should not have the same condition

           Bug
        14. Identical expressions should not be used on both sides of a binary operator

           Bug
        15. All code should be reachable

           Bug
        16. Variables should not be self-assigned

           Bug
        17. Useless "if true ..." and "if false ..." blocks should be removed

           Bug

        All branches in a conditional structure should not have exactly the same implementation

        intentionality - clear
        reliability
        Bug

          Why is this an issue?

          Having all branches of a case or if chain with the same implementation indicates a problem.

          In the following code:

          if b == 0  # Noncompliant
            doOneMoreThing()
          else
            doOneMoreThing()
          end
          
          b = a > 12 ? 4 : 4;  # Noncompliant
          
          case i  # Noncompliant
            when 1
              doSomething()
            when 2
              doSomething()
            when 3
              doSomething()
            else
              doSomething()
          end
          

          Either there is a copy-paste error that needs fixing or an unnecessary case or if chain that needs removing.

          Exceptions

          This rule does not apply to if chains nor case without else.

          if b == 0 # no issue, this could have been done on purpose to make the code more readable
            doSomething()
          elsif b == 1
            doSomething()
          end
          
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