class RuboCop::Cop::Minitest::AssertEmptyLiteral

This cop enforces the test to use `assert_empty` instead of using `assert_equal([], object)`.

@example

# bad
assert_equal([], object)
assert_equal({}, object)

# good
assert_empty(object)

Constants

MSG
RESTRICT_ON_SEND

Public Instance Methods

on_send(node) click to toggle source
# File lib/rubocop/cop/minitest/assert_empty_literal.rb, line 29
def on_send(node)
  assert_equal_with_empty_literal(node) do |literal, matchers|
    return unless literal.values.empty?

    args = matchers.map(&:source).join(', ')

    message = format(MSG, literal: literal.source, arguments: args)
    add_offense(node, message: message) do |corrector|
      object = matchers.first

      corrector.replace(node.loc.selector, 'assert_empty')
      corrector.replace(first_and_second_arguments_range(node), object.source)
    end
  end
end