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#!/usr/bin/perl
use lib 't/lib';
use perl5i::latest;
use Test::perl5i;
use Test::More;
note "popn with no args"; {
my @array = (1, 2, 3);
throws_ok { @array->popn(); }
qr{^\Qpopn() takes the number of elements to pop at $0 line };
}
note "popn with negative arg"; {
my @array = (1, 2, 3);
throws_ok { @array->popn(-20); }
qr{^\Qpopn() takes a positive integer or zero, not '-20' at $0 line };
}
note "popn with non-numerical argument"; {
my @array = (1, 2, 3);
throws_ok { @array->popn("rawr"); }
qr{^\Qpopn() takes a positive integer or zero, not 'rawr' at $0 line };
}
note "popn with arg == 0"; {
my @array = (1, 2, 3);
my @newarray = @array->popn(0);
my @want = (1, 2, 3);
my @newwant = ();
is_deeply \@array, \@want;
is_deeply \@newarray, \@newwant;
}
note "popn with arg > 0"; {
my @array = (1, 2, 3, 4, 5);
my @newarray = @array->popn(3);
my @want = (1, 2);
my @newwant = (3, 4, 5);
is_deeply \@array, \@want;
is_deeply \@newarray, \@newwant;
}
note "popn with arg > length of array"; {
my @array = (1, 2, 3, 4);
my @newarray = @array->popn(10);
my @want = ();
my @newwant = (1, 2, 3, 4);
is_deeply \@array, \@want;
is_deeply \@newarray, \@newwant;
}
note "popn in scalar context"; {
my $array = [1,2,3,4,5];
my $new = $array->popn(3);
is_deeply $array, [1,2];
is_deeply $new, [3,4,5];
}
done_testing;
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