class RuboCop::Cop::RSpec::InstanceSpy

Checks for `instance_double` used with `have_received`.

@example

# bad
it do
  foo = instance_double(Foo).as_null_object
  expect(foo).to have_received(:bar)
end

# good
it do
  foo = instance_spy(Foo)
  expect(foo).to have_received(:bar)
end

Constants

EXAMPLES
MSG

Public Instance Methods

autocorrect(node) click to toggle source
# File lib/rubocop/cop/rspec/instance_spy.rb, line 55
def autocorrect(node)
  lambda do |corrector|
    replacement = 'instance_spy'
    corrector.replace(node.loc.selector, replacement)

    double_source_map = node.parent.loc
    as_null_object_range = double_source_map
      .dot
      .join(double_source_map.selector)
    corrector.remove(as_null_object_range)
  end
end
on_block(node) click to toggle source
# File lib/rubocop/cop/rspec/instance_spy.rb, line 45
def on_block(node)
  return unless example?(node)

  null_double(node) do |var, receiver|
    have_received_usage(node) do |expected|
      add_offense(receiver, location: :expression) if expected == var
    end
  end
end