gem 'minitest'

require 'minitest/autorun'

require 'ruby2js/filter/functions'

describe "yield suport" do

def to_js(string)

_(Ruby2JS.convert(string, eslevel: 2015, filters: [Ruby2JS::Filter::Functions]).to_s)

end

describe "yield" do

it "should add implicit block arg" do

to_js( 'def func(); puts "yielding:"; yield; end' ).

must_include 'function func(_implicitBlockYield=null) {console.log("yielding:"); _implicitBlockYield()}'

end

it "should work with existing arguments" do

to_js( 'def func(x); yield; end' ).

must_include 'function func(x, _implicitBlockYield=null) {_implicitBlockYield()}'

end

it "should allow yield arguments" do

to_js( 'def func(x); yield :sym; end' ).

must_include 'function func(x, _implicitBlockYield=null) {_implicitBlockYield("sym")}'

end

end

describe "block_given?" do

it "should check for presence of implicit block" do

to_js( 'def func(); yield if block_given?; end' ).

must_include 'function func(_implicitBlockYield=null) {if (_implicitBlockYield) {_implicitBlockYield()}}'

end

end

end