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use v6;
use Test;
plan 21;
# XXX I'm not very confident in my reading of S04, so give a suspicious eye
# to these tests before using them.
# L<S04/Exceptions/"internal list of unhandled exceptions">
{
try { die 'OMG' }
ok $! ~~ Exception, '$! has an exception';
#?rakudo 2 skip '$!.pending'
ok $!.pending ~~ List, '$!.pending returns a List';
is $!.pending, (), '$! there are no exceptions pending';
undefine $!;
ok ! $!, '$! has been cleared';
}
sub fail_it { fail $^a }
# L<S04/Exceptions/"test a Failure for .defined or .Bool">
{
my @fails = ( fail_it(1), fail_it(2), fail_it(3), fail_it(4) );
ok all(@fails) ~~ Failure, '@fails is full of fail';
ok $! !~~ Exception, 'fails do not enter $!';
#?rakudo 11 skip '$!.pending'
is +($!.pending.grep( ! *.handled )), 4,
'$!.pending has three unhandled exceptions';
ok ! @fails[0].handled, 'fail 0 is not handled';
ok @fails[0].not, 'fail 0 is not true';
ok @fails[0].handled, 'fail 0 is now handled';
ok ! @fails[1].handled, 'fail 1 is not handled';
ok ! @fails[1].defined, 'fail 1 is not defined';
ok @fails[1].handled, 'fail 1 is now handled';
# L<S04/Exceptions/"The .handled method is rw">
ok ! @fails[2].handled, 'fail 2 is not handled';
lives-ok { @fails[2].handled = 1 }, 'assign to .handled';
ok @fails[2].handled, 'fail 2 is now handled';
is +($!.pending.grep( ! *.handled )), 1,
'$!.pending has one unhandled exception';
undefine $!;
ok ! $!, '$! has been cleared';
}
# L<S04/Exceptions/"At scope exit,">
{
my $fails_thrown = 0;
{
my @throwable = ( fail_it(1), fail_it(2), fail_it(3) );
@throwable[1].handled = 1;
CATCH {
default {
$fails_thrown += +($!.pending);
}
}
}
#?rakudo todo '$object.handled'
is $fails_thrown, 2, 'unhandled Failures in $! at block exit are thrown';
undefine $!;
ok ! $!, '$! has been cleared';
}
# L<S04/Exceptions/"a Mu method, not a Failure method">
{
my $win = Mu.new;
#?rakudo skip '$object.handled'
ok $win.handled, '.handled method is true for all Mus';
}
# vim: ft=perl6
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