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use v6;
use Test;
plan 9;
# test the unless statement modifier
# L<S04/"Conditional statements"/Conditional statement modifiers work as in Perl 5>
{
my $a = 1;
$a = 4 unless 'a' eq 'a';
is($a, 1, "post unless");
}
{
my $a = 1;
$a = 5 unless 'a' eq 'b';
is($a, 5, "post unless");
}
{
my $answer = 1;
my @x = 41, (42 unless $answer), 43;
my @y = 41, (!$answer ?? 42 !! Slip.new()), 43;
my @z = 41, 43;
is @y, @z, "sanity check";
is @x, @y, "unless expr on true cond";
}
{
my $answer = 0;
my @x = 41, (42 unless $answer), 43;
my @y = 41, (!$answer ?? 42 !! Slip.new()), 43;
my @z = 41, 42, 43;
is @y, @z, "sanity check";
is @x, @y, "unless expr on false cond";
}
{
my $a = 'oops';
{ $a = 'ok' } unless 0;
is $a, 'ok', 'Statement-modifier unless runs bare block';
}
{
my $a = 'oops';
{ $a = $^x } unless 0;
is $a, 0, 'Statement-modifier unless runs block with placeholder';
}
# RT #79174
{
is (1,2, unless 0), "1 2", "unless is a terminator even after comma";
}
# vim: ft=perl6