gem 'minitest'

require 'minitest/autorun'

describe "ES2018 support" do

def to_js(string)

_(Ruby2JS.convert(string, eslevel: 2018, filters: []).to_s)

end

def to_js_fn(string)

_(Ruby2JS.convert(string, eslevel: 2018,

filters: [Ruby2JS::Filter::Functions]).to_s)

end

describe :Hash_Spread do

it "should convert merge to Object spread" do

to_js_fn( 'a.merge(b)' ).must_equal '{...a, ...b}'

to_js_fn( 'a.merge(b: 1)' ).must_equal '{...a, b: 1}'

end

end

describe 'keyword arguments' do

it 'should handle rest arguments with keyword arguments in methods' do

skip if RUBY_VERSION =~ /^(1\.9|2\.0)/

to_js('def a(q, a:, b: 2, **r); end').

must_equal('function a(q, { a, b=2, ...r }) {}')

end

it 'should handle rest arguments with keyword arguments in blocks' do

skip if RUBY_VERSION =~ /^(1\.9|2\.0)/

to_js('proc {|q, a:, b: 2, **r|}').

must_equal('(q, { a, b=2, ...r }) => {}')

end

end

end