rspec/rules/S3923/ruby/rule.adoc
Fred Tingaud 1d958ef229
Modify rule S3923: LaYC identical branches
Co-authored-by: Amélie Renard <44666826+amelie-renard-sonarsource@users.noreply.github.com>
2023-06-08 17:06:21 +02:00

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== 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:
[source,ruby]
----
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`.
[source,ruby]
----
if b == 0 # no issue, this could have been done on purpose to make the code more readable
doSomething()
elsif b == 1
doSomething()
end
----
ifdef::env-github,rspecator-view[]
'''
== Implementation Specification
(visible only on this page)
include::../message.adoc[]
include::../highlighting.adoc[]
'''
== Comments And Links
(visible only on this page)
include::../comments-and-links.adoc[]
endif::env-github,rspecator-view[]