require_relative '../../spec_helper' ruby_version_is "2.6" do describe 'TracePoint#parameters' do it 'returns the parameters of block' do f = proc {|x, y, z| } parameters = nil TracePoint.new(:b_call) {|tp| parameters = tp.parameters }.enable do f.call parameters.should == [[:opt, :x], [:opt, :y], [:opt, :z]] end end it 'returns the parameters of lambda block' do f = lambda {|x, y, z| } parameters = nil TracePoint.new(:b_call) {|tp| parameters = tp.parameters }.enable do f.call(1, 2, 3) parameters.should == [[:req, :x], [:req, :y], [:req, :z]] end end end end