rspec mock should_receive in custom matchers

The answer is:

match do |obj|
  # do some setup and mocks here   
  begin
    RSpec::Mocks::verify  # run mock verifications
    true
  rescue RSpec::Mocks::MockExpectationError => e
    # here one can use #{e} to construct an error message
    false
  end
end

Finally found it here