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use v6;
use Test;
plan 32;
=begin description
Basic C<delete> tests, see S32.
=end description
# L<S32::Containers/"Array"/=item delete>
sub make-string(@a) {
~@a.map({ $_ // "Any()" });
}
# W/ positive indices:
{
my @array = <a b c d>;
is ~@array, "a b c d", "basic sanity (1)";
is ~(@array[2]:delete), "c",
"deletion of an array element returned the right thing";
is make-string(@array), "a b Any() d", "deletion of an array element";
is ~(@array[3]:delete), "d",
"deletion of array elements returned the right things";
is make-string(@array), "a b", "deletion of array elements (1)";
is +@array, 2, "deletion of array elements (2)";
}
# W/ negative indices:
{
my @array = <a b c d>;
is ~(@array[*-2]:delete), "c",
"deletion of array element accessed by an negative index returned the right thing";
# @array is now ("a", "b", Any, "d") ==> double spaces
is make-string(@array), "a b Any() d", "deletion of an array element accessed by an negative index (1)";
is +@array, 4, "deletion of an array element accessed by an negative index (2)";
is ~(@array[*-1]:delete), "d",
"deletion of last array element returned the right thing";
# @array is now ("a", "b")
is ~@array, "a b", "deletion of last array element (1)";
is +@array, 2, "deletion of last array element (2)";
}
# W/ multiple positive and negative indices:
{
my @array = <a b c d e f>;
is ~(@array[2, *-3, *-1]:delete), "c d f",
"deletion of array elements accessed by positive and negative indices returned right things";
# @array is now ("a", "b", Any, Any, "e") ==> double spaces
is make-string(@array), "a b Any() Any() e",
"deletion of array elements accessed by positive and negative indices (1)";
is +@array, 5,
"deletion of array elements accessed by positive and negative indices (2)";
}
# Results taken from Perl 5
#?niecza todo "Not sure if this test is correct or not"
{
my @array = <a b c>;
is ~(@array[2, *-1]:delete), "c ",
"deletion of the same array element accessed by different indices returned right things";
is ~@array, "a b",
"deletion of the same array element accessed by different indices (1)";
is +@array, 2,
"deletion of the same array element accessed by different indices (2)";
}
# L<S32::Containers/"Array"/"Deleted elements at the end of an Array">
{
my @array;
@array[8] = 'eight';
@array[8]:delete;
is +@array, 0, 'deletion of trailing items purge empty positions';
}
# W/ one range of positive indices
{
my @array = <a b c d e f>;
is ~(@array[2..4]:delete), "c d e",
"deletion of array elements accessed by a range of positives indices returned right things";
# @array is now ("a", "b", Any, Any, Any, "f") ==> 4 spaces
is make-string(@array), "a b Any() Any() Any() f",
"deletion of array elements accessed by a range of positive indices (1)";
is +@array, 6,
"deletion of array elements accessed by a range of positive indices (2)";
}
{
my @array = <a b c d e f>;
is ~(@array[2^..4]:delete), "d e",
"deletion of array elements accessed by a range of positives indices returned right things (2)";
# @array is now ("a", "b", "c", Any, Any, "f") ==> 4 spaces
is make-string(@array), "a b c Any() Any() f",
"deletion of array elements accessed by a range of positive indices (3)";
is +@array, 6,
"deletion of array elements accessed by a range of positive indices (4)";
}
# RT #67446
{
my @array = 0..1;
is ~(EVAL @array.perl ), '0 1', '@array.perl works after init';
is ~( map { 1 }, @array ), '1 1', 'map @array works after init';
@array[0]:delete;
lives-ok { @array.perl }, '@array.perl lives after delete';
lives-ok { map { 1 }, @array }, 'map @array lives after delete';
}
# RT #116695
{
my @array;
@array[0,2] = (Any, 'two');
@array[2]:delete;
is @array.elems, 1,
'deletion of trailing item does not purge elements we assigned to (1)';
@array[1,2] = (Any, 'two');
@array[2]:delete;
is @array.elems, 2,
'deletion of trailing item does not purge elements we assigned to (2)';
}
# RT #125457
{
my @array = 1, 2, 3;
@array[2]:delete;
@array[3] = 4;
is @array[2], Any, 'deletion of trailing item followed by add item beyond does not resurrect deleted item';
}
# TODO More exclusive bounds checks
# TODO W/ multiple ranges
# vim: ft=perl6
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