hyper.t

use v6;

use Test;

=begin pod

 Hyper operators L<S03/"Hyper operators">

=end pod

# L<S03/Hyper operators>
 # binary infix
my @r;
my @e;
{
        @r = (1, 2, 3) »+« (2, 4, 6);
        @e = (3, 6, 9);
        is(~@r, ~@e, "hyper-sum two arrays");

        @r = (1, 2, 3) »-« (2, 4, 6);
        @e = (-1, -2, -3);
        is(~@r, ~@e, "hyper-subtract two arrays");

        @r = (1, 2, 3) »*« (2, 4, 6);
        @e = (2, 8, 18);
        is(~@r, ~@e, "hyper-multiply two arrays");

        @r = (1, 2, 3) »x« (3, 2, 1);
        @e = ('111', '22', '3');
        is(~@r, ~@e, "hyper-x two arrays");

        @r = (1, 2, 3) »xx« (3, 2, 1);
        @e = ((1,1,1), (2,2), (3));
        is(~@r, ~@e, "hyper-xx two arrays");

        @r = (20, 40, 60) »div« (2, 5, 10);
        @e = (10, 8, 6);
        is(~@r, ~@e, "hyper-divide two arrays");

        @r = (1, 2, 3) »+« (10, 20, 30) »*« (2, 3, 4);
        @e = (21, 62, 123);
        is(~@r, ~@e, "precedence - »+« vs »*«");
}

{
        @r = (1, 2, 3) >>+<< (2, 4, 6);
        @e = (3, 6, 9);
        is(~@r, ~@e, "hyper-sum two arrays ASCII notation");

        @r = (1, 2, 3) >>-<< (2, 4, 6);
        @e = (-1, -2, -3);
        is(~@r, ~@e, "hyper-subtract two arrays ASCII notation");

        @r = (1, 2, 3) >>*<< (2, 4, 6);
        @e = (2, 8, 18);
        is(~@r, ~@e, "hyper-multiply two arrays ASCII notation");

        @r = (1, 2, 3) >>x<< (3, 2, 1);
        @e = ('111', '22', '3');
        is(~@r, ~@e, "hyper-x two arrays ASCII notation");

        @r = (1, 2, 3) >>xx<< (3, 2, 1);
        @e = ((1,1,1), (2,2), (3));
        is(~@r, ~@e, "hyper-xx two arrays ASCII notation");

        @r = (20, 40, 60) >>div<< (2, 5, 10);
        @e = (10, 8, 6);
        is(~@r, ~@e, "hyper-divide two arrays ASCII notation");

        @r = (1, 2, 3) >>+<< (10, 20, 30) >>*<< (2, 3, 4);
        @e = (21, 62, 123);
        is(~@r, ~@e, "precedence - >>+<< vs >>*<< ASCII notation");
};

{ # unary postfix
        my @r = (1, 2, 3);
        @r»++;
        my @e = (2, 3, 4);
        #?pugs todo
        is(~@r, ~@e, "hyper auto increment an array");

        @r = (1, 2, 3);
        @r>>++;
        @e = (2, 3, 4);
        #?pugs todo
        is(~@r, ~@e, "hyper auto increment an array ASCII notation");
};

{ # unary prefix
        my @r;
        @r = -« (3, 2, 1);
        my @e = (-3, -2, -1);
        is(~@r, ~@e, "hyper op on assignment/pipeline");

        @r = -<< (3, 2, 1);
        @e = (-3, -2, -1);
        is(~@r, ~@e, "hyper op on assignment/pipeline ASCII notation");
};

{ # dimension upgrade - ASCII
        my @r;
        @r = (1, 2, 3) >>+>> 1;
        my @e = (2, 3, 4);
        is(~@r, ~@e, "auto dimension upgrade on rhs ASCII notation");

        @r = 2 <<*<< (10, 20, 30);
        @e = (20, 40, 60);
        is(~@r, ~@e, "auto dimension upgrade on lhs ASCII notation");
}

{ # extension
        @r = (1,2,3,4) >>~>> <A B C D E>;
        @e = <1A 2B 3C 4D>;
        is(~@r, ~@e, "list-level element truncate on rhs ASCII notation");

        @r = (1,2,3,4,5) <<~<< <A B C D>;
        @e =  <1A 2B 3C 4D>;
        is(~@r, ~@e, "list-level element truncate on lhs ASCII notation");

        @r = (1,2,3,4) >>~>> <A B C>;
        @e = <1A 2B 3C 4A>;
        is(~@r, ~@e, "list-level element extension on rhs ASCII notation");

        @r = (1,2,3) <<~<< <A B C D>;
        @e =  <1A 2B 3C 1D>;
        is(~@r, ~@e, "list-level element extension on lhs ASCII notation");

        @r = (1,2,3,4) >>~>> <A B>;
        @e = <1A 2B 3A 4B>;
        is(~@r, ~@e, "list-level element extension on rhs ASCII notation");
        
        @r = (1,2) <<~<< <A B C D>;
        @e =  <1A 2B 1C 2D>;
        is(~@r, ~@e, "list-level element extension on lhs ASCII notation");
         
        @r = (1,2,3,4) >>~>> <A>;
        @e = <1A 2A 3A 4A>;
        is(~@r, ~@e, "list-level element extension on rhs ASCII notation");
        
        @r = (1,) <<~<< <A B C D>;
        @e = <1A 1B 1C 1D>;
        is(~@r, ~@e, "list-level element extension on lhs ASCII notation");

        @r = (1,2,3,4) >>~>> 'A';
        @e = <1A 2A 3A 4A>;
        is(~@r, ~@e, "scalar element extension on rhs ASCII notation");

        @r = 1 <<~<< <A B C D>;
        @e = <1A 1B 1C 1D>;
        is(~@r, ~@e, "scalar element extension on lhs ASCII notation");
};

{ # dimension upgrade - unicode
        @r = (1,2,3,4) »~» <A B C D E>;
        @e = <1A 2B 3C 4D>;
        is(~@r, ~@e, "list-level element truncate on rhs unicode notation");

        @r = (1,2,3,4,5) «~« <A B C D>;
        @e =  <1A 2B 3C 4D>;
        is(~@r, ~@e, "list-level element truncate on lhs unicode notation");

        @r = (1,2,3,4) »~» <A B C>;
        @e = <1A 2B 3C 4A>;
        is(~@r, ~@e, "list-level element extension on rhs unicode notation");

        @r = (1,2,3) «~« <A B C D>;
        @e =  <1A 2B 3C 1D>;
        is(~@r, ~@e, "list-level element extension on lhs unicode notation");

        @r = (1,2,3,4) »~» <A B>;
        @e = <1A 2B 3A 4B>;
        is(~@r, ~@e, "list-level element extension on rhs unicode notation");

        @r = (1,2) «~« <A B C D>;
        @e =  <1A 2B 1C 2D>;
        is(~@r, ~@e, "list-level element extension on lhs unicode notation");
 
        @r = (1,2,3,4) »~» <A>;
        @e = <1A 2A 3A 4A>;
        is(~@r, ~@e, "list-level element extension on rhs unicode notation");

        @r = (1,) «~« <A B C D>;
        @e = <1A 1B 1C 1D>;
        is(~@r, ~@e, "list-level element extension on lhs unicode notation");

        @r = (1,2,3,4) »~» 'A';
        @e = <1A 2A 3A 4A>;
        is(~@r, ~@e, "scalar element extension on rhs unicode notation");

        @r = 1 «~« <A B C D>;
        @e = <1A 1B 1C 1D>;
        is(~@r, ~@e, "scalar element extension on lhs unicode notation");
};

{ # unary postfix with integers
        my @r;
        @r = (1, 4, 9)».sqrt;
        my @e = (1, 2, 3);
        is(~@r, ~@e, "method call on integer list elements");

        @r = (1, 4, 9)>>.sqrt;
        @e = (1, 2, 3);
        is(~@r, ~@e, "method call on integer list elements (ASCII)");
}

#?rakudo skip '@array»++'
{
        my (@r, @e);
        (@r = (1, 4, 9))»++;
        @e = (2, 5, 10);
        is(~@r, ~@e, "operator call on integer list elements");

        (@r = (1, 4, 9)).»++;
        is(~@r, ~@e, "operator call on integer list elements (Same thing, dot form)");

        (@r = (1, 4, 9))».++;
        @e = (2, 5, 10);
        is(~@r, ~@e, "operator call on integer list elements (Same thing, dot form)");

        (@r = (1, 4, 9)).».++;
        is(~@r, ~@e, "operator call on integer list elements (Same thing, dot form)");

        (@r = (1, 4, 9))\  .»\  .++;
        @e = (2, 5, 10);
        is(~@r, ~@e, "operator call on integer list elements (Same thing, upspace form)");
};

{ # unary postfix again, but with a twist
        my @r;
        eval '@r = ("f", "oo", "bar")».chars';
        my @e = (1, 2, 3);
        is(~@r, ~@e, "method call on list elements");

        eval '@r = ("f", "oo", "bar").».chars';
        @e = (1, 2, 3);
        is(~@r, ~@e, "method call on list elements (Same thing, dot form)");


        eval '@r = ("f", "oo", "bar")>>.chars';
        @e = (1, 2, 3);
        is(~@r, ~@e, "method call on list elements (ASCII)");

        eval '@r = ("f", "oo", "bar").>>.chars';
        @e = (1, 2, 3);
        is(~@r, ~@e, "method call on list elements (ASCII, Same thing, dot form)");

};

{ # unary postfix on a user-defined object
	my $t;
	class FooTest { method bar { 42 } }; $t = FooTest.new.bar;
	is($t, 42, 'plain method call works OK');

        my @r;
	class FooTest2 { method bar { 42 } }; @r = (FooTest2.new)>>.bar;
	my @e = (42);
	is(~@r, ~@e, "hyper-method-call on list of user-defined objects");
};

{ # distribution for unary prefix
        my @r;
        @r = -« ([1, 2], [3, [4, 5]]);
        my @e = ([-1, -2], [-3, [-4, -5]]);
        is(~@r, ~@e, "distribution for unary prefix");
        is_deeply(@r, @e, "distribution for unary prefix, deep comparison");

        @r = -<< ([1, 2], [3, [4, 5]]);
        @e = ([-1, -2], [-3, [-4, -5]]);
        is(~@r, ~@e, "distribution for unary prefix, ASCII");
        is_deeply(@r, @e, "distribution for unary prefix, ASCII, deep comparison");
};

{ # distribution for unary postfix autoincrement
        my @r;
        @r = ([1, 2], [3, [4, 5]]);
        @r»++;
        my @e = ([2, 3], [4, [5, 6]]);
        #?pugs todo
        is(~@r, ~@e, "distribution for unary postfix autoincr");
        is_deeply(@r, @e, "distribution for unary postfix autoincr, deep comparison");

        @r = ([1, 2], [3, [4, 5]]);
        @r>>++;
        @e = ([2, 3], [4, [5, 6]]);
        #?pugs todo
        is(~@r, ~@e, "distribution for unary postfix autoincr, ASCII");
        is_deeply(@r, @e, "distribution for unary postfix autoincr, ASCII, deep comparison");
};

#?DOES 3
{ # distribution for binary infix - ASCII
        my @r;
        @r = (1, 2, [3, 4]) >>+<< (4, 5, [6, 7]);
        my @e = (5, 7, [9, 11]);
        is(~@r, ~@e, "distribution for binary infix, same shape, ASCII");
        is_deeply(@r, @e, "distribution for binary infix, same shape, ASCII, deep comparison");

        @r = (1, 2, [3, 4]) >>+>> (5, 6, 7);
        @e = (6, 8, [10, 11]);
        is(~@r, ~@e, "distribution for binary infix, dimension upgrade, ASCII");
        is_deeply(@r, @e, "distribution for binary infix, dimension upgrade, ASCII, deep comparison");

        @r = ([1, 2], 3) <<+>> (4, [5, 6]);
        @e = ([5, 6], [8, 9]);
        is(~@r, ~@e, "distribution for binary infix, S03 cross-upgrade, ASCII");
        is_deeply(@r, @e, "distribution for binary infix, S03 cross-upgrade, ASCII, deep comparison");
};

#?DOES 3
{ # distribution for binary infix - unicode
        my @r;
        @r = (1, 2, [3, 4]) »+« (4, 5, [6, 7]);
        my @e = (5, 7, [9, 11]);
        is(~@r, ~@e, "distribution for binary infix, same shape");
        is_deeply(@r, @e, "distribution for binary infix, same shape, deep comparison");

        @r = (1, 2, [3, 4]) »+» (5, 6, 7);
        @e = (6, 8, [10, 11]);
        is(~@r, ~@e, "distribution for binary infix, dimension upgrade");
        is_deeply(@r, @e, "distribution for binary infix, dimension upgrade, deep comparison");

        @r = ([1, 2], 3) «+» (4, [5, 6]);
        @e = ([5, 6], [8, 9]);
        is(~@r, ~@e, "distribution for binary infix, S03 cross-upgrade");
        is_deeply(@r, @e, "distribution for binary infix, S03 cross-upgrade, deep comparison");
};

{ # regression test, ensure that hyper works on arrays
        my @r1;
        my @r2;
        my @e1 = (2, 4, 6);
        my @a = (1, 2, 3);
        @r1 = @a >>+<< @a;
        is(~@r1, ~@e1, "hyper op works on variables, too.");
}
{
        my @a = (1, 2, 3);
        my @e2 = (2, 3, 4);
        my @r2 = @a >>+>> 1;
        is(~@r2, ~@e2, "hyper op and correctly promotes scalars");
};


# mixed hyper and reduce metaops -
# this unveils a spec bug as << recurses into arrays and [+] never gets applied,
# so we disable the entire chunk for now.
=begin todo_unspecced

    is ~([+]<< ([1,2,3], [4,5,6])), "6 15", "mixed hyper and reduce metaop ([+]<<) works";
    ## XXX: Test for [+]<<<< - This is unspecced, commenting it out
    #is ~([+]<<<< ([[1,2],[3,4]],[[5,6],[7,8]])), "3 7 11 15",
    #  "mixed double hyper and reduce metaop ([+]<<<<) works";

    is ~([+]« [1,2,3], [4,5,6]), "6 15",
      "mixed Unicode hyper and reduce metaop ([+]«) works";

=end todo_unspecced

#?pugs todo 'hyper ops'
#?niecza skip 'does not work; recurses into hash'
#?DOES 2
{ # hyper dereferencing
    my @array = (
        { key => 'val' },
        { key => 'val' },
        { key => 'val' }
    );

    my $full = join '', eval '@array>>.<key>';
    is($full, 'valvalval', 'hyper-dereference an array');

    my $part = join '', eval '@array[0,1]>>.<key>';
    is($part, 'valval', 'hyper-dereference an array slice');
}

#?pugs todo 'feature'
#?niecza skip 'junctions'
#?DOES 4
{ # junction hyper -- regression?
    my @a = 1..3;
    my @b = 4..6;
    ok ?(@a »|« @b), '»|« hyperjunction evals';
    ok ?(@a >>|<< @b), '>>|<< hyperjunction evals, ASCII';
    ok ?(@a »&« @b), '»&« hyperjunction evals';
    ok ?(@a >>&<< @b), '>>&<< hyperjunction evals, ASCII';
}

# test hypers on hashes
{
    my %a = a => 1, b => 2, c => 3;
    my %b = a => 5, b => 6, c => 7;
    my %c = a => 1, b => 2;
    my %d = a => 5, b => 6;

    my %r;
    %r = %a >>+<< %b;
    is +%r,   3,  'hash - >>+<< result has right number of keys (same keys)';
    is %r<a>, 6,  'hash - correct result from >>+<< (same keys)';
    is %r<b>, 8,  'hash - correct result from >>+<< (same keys)';
    is %r<c>, 10, 'hash - correct result from >>+<< (same keys)';

    %r = %a »+« %d;
    is +%r,   3, 'hash - »+« result has right number of keys (union test)';
    is %r<a>, 6, 'hash - correct result from »+« (union test)';
    is %r<b>, 8, 'hash - correct result from »+« (union test)';
    is %r<c>, 3, 'hash - correct result from »+« (union test)';

    %r = %c >>+<< %b;
    is +%r,   3, 'hash - >>+<< result has right number of keys (union test)';
    is %r<a>, 6, 'hash - correct result from >>+<< (union test)';
    is %r<b>, 8, 'hash - correct result from >>+<< (union test)';
    is %r<c>, 7, 'hash - correct result from >>+<< (union test)';

    %r = %a <<+>> %b;
    is +%r,   3,  'hash - <<+>> result has right number of keys (same keys)';
    is %r<a>, 6,  'hash - correct result from <<+>> (same keys)';
    is %r<b>, 8,  'hash - correct result from <<+>> (same keys)';
    is %r<c>, 10, 'hash - correct result from <<+>> (same keys)';

    %r = %a <<+>> %d;
    is +%r,   2, 'hash - <<+>> result has right number of keys (intersection test)';
    is %r<a>, 6, 'hash - correct result from <<+>> (intersection test)';
    is %r<b>, 8, 'hash - correct result from <<+>> (intersection test)';

    %r = %c <<+>> %b;
    is +%r,   2, 'hash - <<+>> result has right number of keys (intersection test)';
    is %r<a>, 6, 'hash - correct result from <<+>> (intersection test)';
    is %r<b>, 8, 'hash - correct result from <<+>> (intersection test)';

    %r = %a >>+>> %c;
    is +%r,   3, 'hash - >>+>> result has right number of keys';
    is %r<a>, 2, 'hash - correct result from >>+>>';
    is %r<b>, 4, 'hash - correct result from >>+>>';
    is %r<c>, 3, 'hash - correct result from >>+>>';

    %r = %c >>+>> %b;
    is +%r,   2, 'hash - >>+>> result has right number of keys';
    is %r<a>, 6, 'hash - correct result from >>+>>';
    is %r<b>, 8, 'hash - correct result from >>+>>';

    %r = %c <<+<< %a;
    is +%r,   3, 'hash - <<+<< result has right number of keys';
    is %r<a>, 2, 'hash - correct result from <<+<<';
    is %r<b>, 4, 'hash - correct result from <<+<<';
    is %r<c>, 3, 'hash - correct result from <<+<<';

    %r = %b <<+<< %c;
    is +%r,   2, 'hash - <<+<< result has right number of keys';
    is %r<a>, 6, 'hash - correct result from <<+<<';
    is %r<b>, 8, 'hash - correct result from <<+<<';
}

{
    my %a = a => 1, b => 2, c => 3;
    my %r = -<<%a;
    is +%r,   3, 'hash - -<< result has right number of keys';
    is %r<a>, -1, 'hash - correct result from -<<';
    is %r<b>, -2, 'hash - correct result from -<<';
    is %r<c>, -3, 'hash - correct result from -<<';
    
    %r = --<<%a;
    is +%r,   3, 'hash - --<< result has right number of keys';
    is %r<a>, 0, 'hash - correct result from --<<';
    is %r<b>, 1, 'hash - correct result from --<<';
    is %r<c>, 2, 'hash - correct result from --<<';
    is +%a,   3, 'hash - --<< result has right number of keys';
    is %a<a>, 0, 'hash - correct result from --<<';
    is %a<b>, 1, 'hash - correct result from --<<';
    is %a<c>, 2, 'hash - correct result from --<<';
    
    %r = %a>>++;
    is +%r,   3, 'hash - >>++ result has right number of keys';
    is %r<a>, 0, 'hash - correct result from >>++';
    is %r<b>, 1, 'hash - correct result from >>++';
    is %r<c>, 2, 'hash - correct result from >>++';
    is +%a,   3, 'hash - >>++ result has right number of keys';
    is %a<a>, 1, 'hash - correct result from >>++';
    is %a<b>, 2, 'hash - correct result from >>++';
    is %a<c>, 3, 'hash - correct result from >>++';
}

#?niecza skip 'our sub'
#?DOES 4
{
    our sub postfix:<!>($a) {
        [*] 1..$a;
    }

    my %a = a => 1, b => 2, c => 3;
    my %r = %a>>!;
    is +%r,   3, 'hash - >>! result has right number of keys';
    is %r<a>, 1, 'hash - correct result from >>!';
    is %r<b>, 2, 'hash - correct result from >>!';
    is %r<c>, 6, 'hash - correct result from >>!';
}

{
    my %a = a => 1, b => 2, c => 3;

    my %r = %a >>*>> 4;
    is +%r,   3, 'hash - >>*>> result has right number of keys';
    is %r<a>, 4, 'hash - correct result from >>*>>';
    is %r<b>, 8, 'hash - correct result from >>*>>';
    is %r<c>, 12, 'hash - correct result from >>*>>';
    
    %r = 2 <<**<< %a ;
    is +%r,   3, 'hash - <<**<< result has right number of keys';
    is %r<a>, 2, 'hash - correct result from <<**<<';
    is %r<b>, 4, 'hash - correct result from <<**<<';
    is %r<c>, 8, 'hash - correct result from <<**<<';
    
    %r = %a <<*>> 4;
    is +%r,   3, 'hash - <<*>> result has right number of keys';
    is %r<a>, 4, 'hash - correct result from <<*>>';
    is %r<b>, 8, 'hash - correct result from <<*>>';
    is %r<c>, 12, 'hash - correct result from <<*>>';
    
    %r = 2 <<**>> %a ;
    is +%r,   3, 'hash - <<**>> result has right number of keys';
    is %r<a>, 2, 'hash - correct result from <<**>>';
    is %r<b>, 4, 'hash - correct result from <<**>>';
    is %r<c>, 8, 'hash - correct result from <<**>>';
}

#?rakudo skip '>>. NYI on hashes'
{
    my %a = a => 1, b => -2, c => 3;
    my %r = %a>>.abs;
    is +%r,   3, 'hash - >>.abs result has right number of keys';
    is %r<a>, 1, 'hash - correct result from >>.abs';
    is %r<b>, 2, 'hash - correct result from >>.abs';
    is %r<c>, 3, 'hash - correct result from >>.abs';
}

#?DOES 29
{
    my @a = (1, { a => 2, b => 3 }, 4);
    my @b = <a b c>;
    my @c = ('z', { a => 'y', b => 'x' }, 'w');
    my @d = 'a'..'f';

    my @r = @a <<~>> @b;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], "1a", 'hash in array - correct result from <<~>>';
    is @r[1]<a>, "2b", 'hash in array - correct result from <<~>>';
    is @r[1]<b>, "3b", 'hash in array - correct result from <<~>>';
    is @r[2], "4c", 'hash in array - correct result from <<~>>';

    @r = @a >>~<< @c;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], "1z", 'hash in array - correct result from >>~<<';
    is @r[1]<a>, "2y", 'hash in array - correct result from >>~<<';
    is @r[1]<b>, "3x", 'hash in array - correct result from >>~<<';
    is @r[2], "4w", 'hash in array - correct result from >>~<<';
    
    @r = @a >>~>> @d;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], "1a", 'hash in array - correct result from >>~>>';
    is @r[1]<a>, "2b", 'hash in array - correct result from >>~>>';
    is @r[1]<b>, "3b", 'hash in array - correct result from >>~>>';
    is @r[2], "4c", 'hash in array - correct result from >>~>>';

    @r = @d <<R~<< @a;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], "1a", 'hash in array - correct result from <<R~<<';
    is @r[1]<a>, "2b", 'hash in array - correct result from <<R~<<';
    is @r[1]<b>, "3b", 'hash in array - correct result from <<R~<<';
    is @r[2], "4c", 'hash in array - correct result from <<R~<<';

    @r = @a <<~>> @d;
    is +@r, 6, 'hash in array - result array is the correct length';
    is @r[0], "1a", 'hash in array - correct result from <<~>>';
    is @r[1]<a>, "2b", 'hash in array - correct result from <<~>>';
    is @r[1]<b>, "3b", 'hash in array - correct result from <<~>>';
    is @r[2], "4c", 'hash in array - correct result from <<~>>';
    is @r[3], "1d", 'hash in array - correct result from <<~>>';
    is @r[4]<a>, "2e", 'hash in array - correct result from <<~>>';
    is @r[4]<b>, "3e", 'hash in array - correct result from <<~>>';
    is @r[5], "4f", 'hash in array - correct result from <<~>>';
}

#?DOES 29
{
    my @a = (1, { a => 2, b => 3 }, 4);
    my @b = <a b c>;
    my @c = ('z', { a => 'y', b => 'x' }, 'w');
    my @d = 'a'..'f';

    my @r = @a «~» @b;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], "1a", 'hash in array - correct result from «~»';
    is @r[1]<a>, "2b", 'hash in array - correct result from «~»';
    is @r[1]<b>, "3b", 'hash in array - correct result from «~»';
    is @r[2], "4c", 'hash in array - correct result from «~»';

    @r = @a »~« @c;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], "1z", 'hash in array - correct result from »~«';
    is @r[1]<a>, "2y", 'hash in array - correct result from »~«';
    is @r[1]<b>, "3x", 'hash in array - correct result from »~«';
    is @r[2], "4w", 'hash in array - correct result from »~«';
    
    @r = @a »~» @d;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], "1a", 'hash in array - correct result from »~»';
    is @r[1]<a>, "2b", 'hash in array - correct result from »~»';
    is @r[1]<b>, "3b", 'hash in array - correct result from »~»';
    is @r[2], "4c", 'hash in array - correct result from »~»';

    @r = @d «R~« @a;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], "1a", 'hash in array - correct result from «R~«';
    is @r[1]<a>, "2b", 'hash in array - correct result from «R~«';
    is @r[1]<b>, "3b", 'hash in array - correct result from «R~«';
    is @r[2], "4c", 'hash in array - correct result from «R~«';

    @r = @a «~» @d;
    is +@r, 6, 'hash in array - result array is the correct length';
    is @r[0], "1a", 'hash in array - correct result from «~»';
    is @r[1]<a>, "2b", 'hash in array - correct result from «~»';
    is @r[1]<b>, "3b", 'hash in array - correct result from «~»';
    is @r[2], "4c", 'hash in array - correct result from «~»';
    is @r[3], "1d", 'hash in array - correct result from «~»';
    is @r[4]<a>, "2e", 'hash in array - correct result from «~»';
    is @r[4]<b>, "3e", 'hash in array - correct result from «~»';
    is @r[5], "4f", 'hash in array - correct result from «~»';
}

{
    my @a = (1, { a => 2, b => 3 }, 4);
    my @r = -<<@a;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], -1, 'hash in array - correct result from -<<';
    is @r[1]<a>, -2, 'hash in array - correct result from -<<';
    is @r[1]<b>, -3, 'hash in array - correct result from -<<';
    is @r[2], -4, 'hash in array - correct result from -<<';
    
    @r = ++<<@a;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], 2, 'hash in array - correct result from ++<<';
    is @r[1]<a>, 3, 'hash in array - correct result from ++<<';
    is @r[1]<b>, 4, 'hash in array - correct result from ++<<';
    is @r[2], 5, 'hash in array - correct result from ++<<';
    
    @r = @a>>--;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], 2, 'hash in array - correct result from ++<<';
    is @r[1]<a>, 3, 'hash in array - correct result from ++<<';
    is @r[1]<b>, 4, 'hash in array - correct result from ++<<';
    is @r[2], 5, 'hash in array - correct result from ++<<';
    is +@a, 3, 'hash in array - result array is the correct length';
    is @a[0], 1, 'hash in array - correct result from ++<<';
    is @a[1]<a>, 2, 'hash in array - correct result from ++<<';
    is @a[1]<b>, 3, 'hash in array - correct result from ++<<';
    is @a[2], 4, 'hash in array - correct result from ++<<';
}

{
    my @a = (1, { a => 2, b => 3 }, 4);
    my @r = -«@a;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], -1, 'hash in array - correct result from -«';
    is @r[1]<a>, -2, 'hash in array - correct result from -«';
    is @r[1]<b>, -3, 'hash in array - correct result from -«';
    is @r[2], -4, 'hash in array - correct result from -«';
    
    @r = ++«@a;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], 2, 'hash in array - correct result from ++«';
    is @r[1]<a>, 3, 'hash in array - correct result from ++«';
    is @r[1]<b>, 4, 'hash in array - correct result from ++«';
    is @r[2], 5, 'hash in array - correct result from ++«';
    
    @r = @a»--;
    is +@r, 3, 'hash in array - result array is the correct length';
    is @r[0], 2, 'hash in array - correct result from ++«';
    is @r[1]<a>, 3, 'hash in array - correct result from ++«';
    is @r[1]<b>, 4, 'hash in array - correct result from ++«';
    is @r[2], 5, 'hash in array - correct result from ++«';
    is +@a, 3, 'hash in array - result array is the correct length';
    is @a[0], 1, 'hash in array - correct result from ++«';
    is @a[1]<a>, 2, 'hash in array - correct result from ++«';
    is @a[1]<b>, 3, 'hash in array - correct result from ++«';
    is @a[2], 4, 'hash in array - correct result from ++«';
}

# test non-UTF-8 input
#?niecza skip 'nonsensical test'
#?pugs skip 'eval(Buf)'
#?rakudo skip 'eval(Buf)'
#?DOES 1
{
    my $t = '(1, 2, 3) »+« (4, 3, 2)';
    ok !eval($t.encode('ISO-8859-1')),
       'Latin-1 »+« without pre-declaration is an error';
}

# Test for 'my @a = <a b c> »~» "z";' wrongly
# setting @a to [['az', 'bz', 'cz']].
{
    my @a = <a b c> »~» 'z';
    is "{@a[0]}, {@a[1]}, {@a[2]}", 'az, bz, cz', "dwimmy hyper doesn't return an itemized list";
}

# L<S03/"Hyper operators"/is assumed to be infinitely extensible>
{
    @r = <A B C D E> »~» (1, 2, 3, *);
    @e = <A1 B2 C3 D3 E3>;
    is ~@r, ~@e, 'dwimmy hyper extends lists ending with * by copying the last element';

    @r = <A B C D E> «~» (1, 2, 3, *);
    @e = <A1 B2 C3 D3 E3>;
    is ~@r, ~@e, 'dwimmy hyper extends lists ending with * by copying the last element';

    @r = (1, 2, 3, *) «~« <A B C D E>;
    @e = <1A 2B 3C 3D 3E>;
    is ~@r, ~@e, 'dwimmy hyper extends lists ending with * by copying the last element';

    @r = (1, 2, 3, *) «~» <A B C D E>;
    @e = <1A 2B 3C 3D 3E>;
    is ~@r, ~@e, 'dwimmy hyper extends lists ending with * by copying the last element';

    @r = (1, 2, *) «~» (4, 5, *);
    @e = <14 25>;
    is ~@r, ~@e, 'dwimmy hyper omits * when both arguments of same length have one';

    @r = (1, 2, *) «~» (4, 5, 6, *);
    @e = <14 25 26>;
    is ~@r, ~@e, 'dwimmy hyper takes longer length given two arguments ending with *';
}

# RT #77010

#?rakudo skip 'RT 77010 - use hypers with local scoped user-defined operators'
{
    # niecza doesn't propagate slangs into &eval yet
    eval_lives_ok 'sub infix:<+++>($a, $b) { ($a + $b) div 2 }; 10 >>+++<< 14', 'can use hypers with local scoped user-defined operators';
} 

# RT #74530
{
    is ~(-<<(1..3)), '-1 -2 -3', 'ranges and hyper ops mix';
}

# RT #77800
# Parsing hyper-subtraction
{
    is ((9, 8) <<-<< (1, 2, 3, 4)), (8, 6, 6, 4), '<<-<<';
    is ((9, 8, 10, 12) >>->> (1, 2)), (8, 6, 9, 10), '>>->>';
    is ((9, 8) >>-<< (1, 2)), (8, 6), '>>-<<';
    is ((9, 8) <<->> (1, 2, 5)), (8, 6, 4), '<<->>';
}

# RT #77876
# L<S03/Hyper operators/'@array »+=»'>
# Hyper assignment operators
#?niecza skip 'fails horribly'
#?DOES 6
{
    my @array = 3, 8, 2, 9, 3, 8;
    @r = @array »+=« (1, 2, 3, 4, 5, 6);
    @e = 4, 10, 5, 13, 8, 14;
    is @r, @e, '»+=« returns the right value';
    is @array, @e, '»+=« changes its lvalue';

    @array = 3, 8, 2, 9, 3, 8;
    @r = @array »*=» (1, 2, 3);
    @e = 3, 16, 6, 9, 6, 24;
    is @r, @e, '»*=» returns the right value';
    is @array, @e, '»*=» changes its lvalue';

    my $a = 'apple';
    my $b = 'blueberry';
    my $c = 'cherry';
    @r = ($a, $b, $c) »~=» <pie tart>;
    @e = <applepie blueberrytart cherrypie>;
    is @r, @e, '»~=» with list of scalars on the left returns the right value';
    my $e = 'applepie, blueberrytart, cherrypie';
    is "$a, $b, $c", $e, '»~=» changes each scalar';
}

done;

# vim: ft=perl6