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range.t
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range.t
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use v6;
use Test;
plan 114;
# L<S03/Nonchaining binary precedence/Range object constructor>
# 3..2 must *not* produce "3 2". Use reverse to get a reversed range. -lwall
is ~(3..6), "3 4 5 6", "(..) works on numbers (1)";
is ~(3..3), "3", "(..) works on numbers (2)";
is ~(3..2), "", "(..) works on auto-rev numbers (3)";
is ~(8..11), "8 9 10 11", "(..) works on carried numbers (3)";
is ~("a".."c"), "a b c", "(..) works on chars (1)";
is ~("a".."a"), "a", "(..) works on chars (2)";
is ~("b".."a"), "", "(..) works on chars (3)";
is ~("a".."z"), "a b c d e f g h i j k l m n o p q r s t u v w x y z", "(..) works on char range ending in z";
is ~("A".."Z"), "A B C D E F G H I J K L M N O P Q R S T U V W X Y Z", "(..) works on char range ending in Z";
is ~("Y".."AB"), "", "(..) works on carried chars (3)";
#?rakudo 4 skip 'Spec under design here'
#?niecza 4 skip 'Spec under design here'
is ~('Y'..'z'), 'Y Z', '(..) works on uppercase letter .. lowercase letter (1)';
is ~('z'..'Y'), '', '(..) works on auto-rev uppercase letter .. lowercase letter (2)';
is ~('Y'..'_'), 'Y Z', '(..) works on letter .. non-letter (1)';
is ~('_'..'Y'), '', '(..) works on auto-rev letter .. non-letter (2)';
#?rakudo skip "nom regression: No applicable candidates found to dispatch to for 'Numeric'."
is ~(' '..' '), ' ', 'all-whitespace range works';
is ~(3..9-3), "3 4 5 6", "(..) has correct precedence (1)";
is ~(5..9-5), "", "(..) has correct precedence (2)";
is ~(2+1..6), "3 4 5 6", "(..) has correct precedence (3)";
is ~(2+5..6), "", "(..) has correct precedence (4)";
# Test the three exclusive range operators:
# L<S03/Range and RangeIter semantics/range operator has variants>
is [1^..9], [2..9], "bottom-exclusive range (^..) works (1)";
is [2^..2], [], "bottom-exclusive range (^..) works (2)";
is [3^..2], [], "bottom-exclusive auto-rev range (^..) works (3)";
is [1 ..^9], [1..8], "top-exclusive range (..^) works (1)";
is [2 ..^2], [], "top-exclusive range (..^) works (2)";
is [3 ..^2], [], "top-exclusive auto-rev range (..^) works (3)";
is [1^..^9], [2..8], "double-exclusive range (^..^) works (1)";
is [9^..^1], [], "double-exclusive auto-rev range (^..^) works (2)";
is [1^..^2], [], "double-exclusive range (^..^) can produce null range (1)";
# tests of (x ^..^ x) here and below ensure that our implementation
# of double-exclusive range does not blindly remove an element
# from the head and tail of a list
is [1^..^1], [], "double-exclusive range (x ^..^ x) where x is an int";
is ["a"^.."z"], ["b".."z"], "bottom-exclusive string range (^..) works";
is ["z"^.."a"], [], "bottom-exclusive string auto-rev range (^..) works";
is ["a"..^"z"], ["a".."y"], "top-exclusive string range (..^) works";
is ["z"..^"a"], [], "top-exclusive string auto-rev range (..^) works";
is ["a"^..^"z"], ["b".."y"], "double-exclusive string range (^..^) works";
is ["z"^..^"a"], [], "double-exclusive string auto-rev range (^..^) works";
is ['a'^..^'b'], [], "double-exclusive string range (^..^) can produce null range";
is ['b'^..^'a'], [], "double-exclusive string auto-rev range (^..^) can produce null range";
is ['a' ^..^ 'a'], [], "double-exclusive range (x ^..^ x) where x is a char";
is ('a'..'z').list.join(' '), 'a b c d e f g h i j k l m n o p q r s t u v w x y z', '"a".."z"';
#?pugs todo 'bug'
is 1.5 ~~ 1^..^2, Bool::True, "lazy evaluation of the range operator";
# Test the unary ^ operator
is ~(^5), "0 1 2 3 4", "unary ^num produces the range 0..^num";
is [^1], [0], "unary ^ on the boundary ^1 works";
is [^0], [], "unary ^0 produces null range";
is [^-1], [], "unary ^-1 produces null range";
is [^0.1], [0], "unary ^0.1 produces the range 0..^x where 0 < x < 1";
#?niecza skip 'System.FormatException: Unknown char: a'
is [^'a'], [], "unary ^'a' produces null range";
is ~(^"5"), "0 1 2 3 4", 'unary ^"num" produces the range 0..^num';
{
my @a = 3, 5, 3;
is (^@a).perl, (0..^3).perl, 'unary ^@a produces 0..^+@a';
}
# test iterating on infinite ranges
is (1..*).[^5].join('|'), '1|2|3|4|5', '1..*';
is ('a'..*).[^5].join('|'), 'a|b|c|d|e', '"a"..*';
# test that the zip operator works with ranges
is (1..5 Z <a b c>).join('|'), '1|a|2|b|3|c', 'Ranges and infix:<Z>';
is (1..2 Z <a b c>).join('|'), '1|a|2|b', 'Ranges and infix:<Z>';
is (<c b a> Z 1..5).join('|'), 'c|1|b|2|a|3', 'Ranges and infix:<Z>';
# two ranges
is (1..6 Z 'a' .. 'c').join, '1a2b3c', 'Ranges and infix:<Z>';
{
# Test with floats
# 2006-12-05:
# 16:16 <TimToady> ~(1.9 ^..^ 4.9) should produce 2.9, 3.9
# 16:17 <pmichaud> and ~(1.9 ^..^ 4.5) would produce the same?
# 16:17 <TimToady> yes
is ~(1.1 .. 4) , "1.1 2.1 3.1", "range with float .min";
is ~(1.9 .. 4) , "1.9 2.9 3.9", "range with float .min";
is ~(1.1 ^.. 4), "2.1 3.1" , "bottom exclusive range of float";
is ~(1.9 ^.. 4), "2.9 3.9" , "bottom exclusive range of float";
is ~(1 .. 4.1) , "1 2 3 4", "range with float .max";
is ~(1 .. 4.9) , "1 2 3 4", "range with float .max";
is ~(1 ..^ 4.1), "1 2 3 4", "top exclusive range of float";
is ~(1 ..^ 4.9), "1 2 3 4", "top exclusive range of float";
is ~(1.1 .. 4.1), "1.1 2.1 3.1 4.1", "range with float .min/.max";
is ~(1.9 .. 4.1), "1.9 2.9 3.9" , "range with float .min/.max";
is ~(1.1 .. 4.9), "1.1 2.1 3.1 4.1", "range with float .min/.max";
is ~(1.9 .. 4.9), "1.9 2.9 3.9 4.9", "range with float .min/.max";
is ~(1.1 ^..^ 4.1), "2.1 3.1" , "both exclusive float range";
is ~(1.9 ^..^ 4.1), "2.9 3.9" , "both exclusive float range";
is ~(1.1 ^..^ 4.9), "2.1 3.1 4.1", "both exclusive float range";
is ~(1.9 ^..^ 4.9), "2.9 3.9" , "both exclusive float range";
is [1.1 ^..^ 1.1], [], "double-exclusive range (x ^..^ x) where x is a float";
}
# Test that the operands are forced to scalar context
## From pmichaud 2006-06-30: These tests may be incorrect.
## C<@one> in ## item context returns an Array, not a number
## -- use C< +@one > to get the number of elements. So, we
## need to either declare that there's a version of infix:<..>
## that coerces its arguments to numeric context, or we can
## remove these tests from the suite.
# RT #58018
# RT #76950
#?niecza skip "Unhandled exception: cannot increment a value of type Array"
{
my @three = (1, 1, 1);
my @one = 1;
#?rakudo 2 skip "nom regression: Method 'succ' not found for invocant of class 'Array'"
is ~(@one .. 3) , "1 2 3", "lower inclusive limit is in scalar context";
is ~(@one ^.. 3) , "2 3" , "lower exclusive limit is in scalar context";
is ~(3 ^.. @one) , "" , "lower exclusive limit is in scalar context";
is ~(1 .. @three) , "1 2 3", "upper inclusive limit is in scalar context";
is ~(4 .. @three) , "" , "upper inclusive limit is in scalar context";
is ~(1 ..^ @three) , "1 2" , "upper exclusive limit is in scalar context";
is ~(4 ..^ @three) , "" , "upper exclusive limit is in scalar context";
}
# test that .map and .grep work on ranges
{
is (0..3).map({$_ * 2}).join('|'), '0|2|4|6', '.map works on ranges';
is (0..3).grep({$_ == 1|3}).join('|'), '1|3', '.grep works on ranges';
is (1..3).first({ $_ % 2 == 0}), 2, '.first works on ranges';
#?niecza skip 'Unable to resolve method reduce in class Range'
is (1..3).reduce({ $^a + $^b}), 6, '.reduce works on ranges';
}
# test that range operands are handled in string context if strings
{
my $range;
my $start = "100.B";
my $end = "102.B";
lives_ok { $range = $start..$end },
'can make range from numeric string vars';
is $range.min, $start, 'range starts at start';
is $range.min.WHAT.gist, "Str()", 'range start is a string';
is $range.max, $end, 'range ends at end';
is $range.max.WHAT.gist, "Str()", 'range end is a string';
#?rakudo todo "RT #105014"
lives_ok { "$range" }, 'can stringify range';
#?rakudo skip "nom regression: No applicable candidates found to dispatch to for 'Numeric'."
is ~$range, "100.B 101.B 102.B", 'range is correct';
}
# RT #67882
{
my $range;
lives_ok { '1 3' ~~ /(\d+) \s (\d+)/; $range = $0..$1 },
'can make range from match vars';
is $range.min, 1, 'range starts at one';
is $range.max, 3, 'range ends at three';
#?rakudo 2 skip "range stringification: Method 'succ' not found for invocant of class 'Match'"
#?niecza 2 skip 'cannot increment a value of type Match'
lives_ok { "$range" }, 'can stringify range';
is ~$range, "1 2 3", 'range is correct';
}
# and another set, just for the lulz
# RT #67882
{
ok '1 3' ~~ /(\d) . (\d)/, 'regex sanity';
isa_ok $0..$1, Range, '$0..$1 constructs a Range';
#?rakudo skip "range with match object endpoints: Method 'succ' not found for invocant of class 'Match'"
#?niecza skip 'cannot increment a value of type Match'
is ($0..$1).join('|'), '1|2|3', 'range from $0..$1';
}
{
my $range;
lives_ok { '1 3' ~~ /(\d+) \s (\d+)/; $range = +$0..+$1 },
'can make range from match vars with numeric context forced';
is $range.min, 1, 'range starts at one';
is $range.max, 3, 'range ends at three';
lives_ok { "$range" }, 'can stringify range';
is ~$range, "1 2 3", 'range is correct';
}
{
my $range;
lives_ok { '1 3' ~~ /(\d+) \s (\d+)/; $range = ~$0..~$1 },
'can make range from match vars with string context forced';
is $range.min, 1, 'range starts at one';
is $range.min.WHAT.gist, "Str()", 'range start is a string';
is $range.max, 3, 'range ends at three';
is $range.max.WHAT.gist, "Str()", 'range end is a string';
lives_ok { "$range" }, 'can stringify range';
is ~$range, "1 2 3", 'range is correct';
}
# L<S03/Nonchaining binary precedence/it is illegal to use a Range or a
# List as implicitly numeric:>
#?rakudo todo 'forbid Ranges and Lists as Range endpoints'
#?niecza todo
{
ok !defined(try { 0 .. ^10 }), '0 .. ^10 is illegal';
ok !defined(try { 0 .. (0, 1, 2) }), '0 .. List is illegal';
}
# RT #68788
{
$_ = Any; # unsetting $_ to reproduce bug literally
lives_ok {(1..$_)}, '(1..$_) lives';
isa_ok (1..$_), Range, '(..) works on Int .. Any';
}
# RT #82620
#?niecza todo
{
lives_ok {("a".."b").map({.trans(""=>"")}).perl},
"range doesn't leak Parrot types";
}
# # vim: ft=perl6