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use v6;
use Test;
=begin kwid
Basic "unless" tests
=end kwid
plan 10;
# L<S04/Conditional statements/unless statements
# work as in Perl 5>
my $x = 'test';
{
my $found = 0;
unless $x ne $x { $found = 1; };
ok($found, 'unless $x ne $x works');
}
{
my $found = 1;
unless $x eq $x { $found = 0; }
ok($found, 'unless $x eq $x is not executed');
}
{
my $found = 0;
unless 0 { $found = 1; }
ok($found, 'unless 0 is executed');
}
{
my $found = 1;
unless 1 { $found = 0; }
ok($found, 'unless 1 is not executed');
}
{
my $found = 0;
unless Mu { $found = 1; }
ok($found, 'unless undefined is executed');
}
# with parentheses
{
my $found = 0;
unless ($x ne $x) { $found = 1; };
ok($found, 'unless ($x ne $x) works');
}
{
my $found = 1;
unless (5+2) { $found = 0; }
ok($found, 'unless (5+2) is not executer');
}
# die called in the condition part of an if statement should die immediately
# rather than being evaluated as a boolean
my $foo = 1;
try { unless (die "should die") { $foo = 3 }};
#say '# $foo = ' ~ $foo;
is $foo, 1, "die should stop execution immediately.";
# L<S04/Conditional statements/"The unless statement does not allow an elsif">
# RT #130279
subtest '`else` and kin with `unless` errors out' => {
plan 3;
throws-like 'unless 1 {} else {}', X::Syntax::UnlessElse,
keyword => 'else', 'using `else`';
throws-like 'unless 1 {} elsif 1 {}', X::Syntax::UnlessElse,
keyword => 'elsif', 'using `elsif`';
throws-like 'unless 1 {} orwith 1 {}', X::Syntax::UnlessElse,
keyword => 'orwith', 'using `orwith`';
}
ok (unless 1 { 2 }) ~~ Slip, "unless returns Slip when not taken";
# vim: ft=perl6