passing callables to shared examples in rspec

test_spec.rb

require 'spec_helper'

shared_examples_for 'shared examples with proc' do |param1, param2|
  it do
    expect(param1).to eq param2.call
  end
end

def true_method
  true
end

describe 'test' do
  it_behaves_like 'shared examples with proc', true, (-> { true })
  it_behaves_like 'shared examples with proc', true, (lambda { true })
  it_behaves_like 'shared examples with proc', true, (Proc.new { true })
  it_behaves_like 'shared examples with proc', true, method(:true_method)
end