bug.p6

use Test;

# RT #128991
lives-ok {
    for ^5 {
        my $p = Promise.new;
        my $s = supply {
            whenever Supply.interval(.001) {
                done if $++ > 50;
            }
        }
        $s.tap(done => { $p.keep(True) }); # Will die if keeping twice
        await $p;
    }
}, 'Never get done message twice from a supply';
lives-ok {
    for ^5 {
        react {
            whenever Supply.interval(.001) {
                done if $++ > 50;
            }
        }
    }
}, 'No react guts crash in case that once spat out two done messages either';