Style-EmptyCaseCondition.md

Pattern: Empty case condition

Issue: -

Description

This rule checks for case statements with an empty condition.

Examples

# bad:
case
when x == 0
  puts 'x is 0'
when y == 0
  puts 'y is 0'
else
  puts 'neither is 0'
end

# good:
if x == 0
  puts 'x is 0'
elsif y == 0
  puts 'y is 0'
else
  puts 'neither is 0'
end

# good: (the case condition node is not empty)
case n
when 0
  puts 'zero'
when 1
  puts 'one'
else
  puts 'more'
end

Further Reading

• RuboCop - Style/EmptyCaseCondition