Class: CustomCops::RefuteNot

Inherits:
RuboCop::Cop::Cop
  • Object
show all
Defined in:
lib/custom_cops/refute_not.rb

Overview

Enforces the use of ‘#assert_not` methods over `#refute` methods.

Examples:

# bad
refute false
refute_empty [1, 2, 3]
refute_equal true, false

# good
assert_not false
assert_not_empty [1, 2, 3]
assert_not_equal true, false

Constant Summary collapse

MSG = 
"Prefer `%<assert_method>s` over `%<refute_method>s`"
CORRECTIONS = 
{
  refute:             "assert_not",
  refute_empty:       "assert_not_empty",
  refute_equal:       "assert_not_equal",
  refute_in_delta:    "assert_not_in_delta",
  refute_in_epsilon:  "assert_not_in_epsilon",
  refute_includes:    "assert_not_includes",
  refute_instance_of: "assert_not_instance_of",
  refute_kind_of:     "assert_not_kind_of",
  refute_nil:         "assert_not_nil",
  refute_operator:    "assert_not_operator",
  refute_predicate:   "assert_not_predicate",
  refute_respond_to:  "assert_not_respond_to",
  refute_same:        "assert_not_same",
  refute_match:       "assert_no_match"
}.freeze
OFFENSIVE_METHODS = 
CORRECTIONS.keys.freeze

Instance Method Summary collapse

Instance Method Details

#autocorrect(node) ⇒ Object 



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# File 'lib/custom_cops/refute_not.rb', line 48

def autocorrect(node)
  ->(corrector) do
    corrector.replace(
      node.loc.selector,
      CORRECTIONS[node.method_name]
    )
  end
end

#on_send(node) ⇒ Object 



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# File 'lib/custom_cops/refute_not.rb', line 41

def on_send(node)
  return unless offensive?(node)

  message = offense_message(node.method_name)
  add_offense(node, location: :selector, message: message)
end