#!/usr/bin/pugs
use v6;
use Test;
plan 14;
{
# { } has implicit signature ($_ is rw = $OUTER::_)
$_ = 'Hello';
is(try { { $_ }.() }, 'Hello', '$_ in bare block defaults to outer', :todo<feature>);
is({ $_ }.('Goodbye'), 'Goodbye', 'but it is only a default');
is({ 42 }.(), 42, 'no implicit $_ usage checking');
is({ 42 }.('Goodbye'), 42, '$_ gets assigned but isn\'t used');
is(({ $_ }.arity), 1, '{$_} is arity 1, of course');
is(({ 42 }.arity), 1, 'Even blocks that don\'t use $_ have arity 1');
}
{
dies_ok(sub () { -> { "Boo!" }.(42) }, '-> {} is arity 0', :todo<feature>);
dies_ok(sub () { -> { $_ }.(42) }, 'Even when we use $_', :todo<feature>);
is(try { $_ = "Ack"; -> { $_ }.() }, 'Ack!', '$_ is lexical here', :todo<feature>);
is(-> $a { $_ }.(42), 'Ack!', 'Even with parameters (?)', :todo<feature>);
is(-> $_ { $_ }.(42), 42, 'But not when the parameter is $_');
dies_ok( sub () { -> { $^a }.() }, 'Placeholders not allowed in ->');
is(-> { }.arity, 0, '->{} is arity 0, again');
}
{
dies_ok(sub () { sub { $^foo }.(42) }, 'Placeholders not allowed in sub()');
}