| 1 | #./perl |
| 2 | |
| 3 | BEGIN { |
| 4 | chdir 't' if -d 't'; |
| 5 | @INC = '../lib'; |
| 6 | } |
| 7 | |
| 8 | BEGIN { |
| 9 | require "./test.pl"; |
| 10 | plan(tests => 35); |
| 11 | } |
| 12 | |
| 13 | use Scalar::Util qw(refaddr); |
| 14 | |
| 15 | { |
| 16 | package Stringifies; |
| 17 | |
| 18 | use overload ( |
| 19 | fallback => 1, |
| 20 | '""' => sub { "foo" }, |
| 21 | '0+' => sub { 42 }, |
| 22 | cos => sub { "far side of overload table" }, |
| 23 | ); |
| 24 | |
| 25 | sub new { bless {}, shift }; |
| 26 | } |
| 27 | |
| 28 | my $x = Stringifies->new; |
| 29 | |
| 30 | is( "$x", "foo", "stringifies" ); |
| 31 | is( 0 + $x, 42, "numifies" ); |
| 32 | is( cos($x), "far side of overload table", "cosinusfies" ); |
| 33 | |
| 34 | { |
| 35 | no overloading; |
| 36 | is( "$x", overload::StrVal($x), "no stringification" ); |
| 37 | is( 0 + $x, refaddr($x), "no numification" ); |
| 38 | is( cos($x), cos(refaddr($x)), "no cosinusfication" ); |
| 39 | |
| 40 | { |
| 41 | no overloading '""'; |
| 42 | is( "$x", overload::StrVal($x), "no stringification" ); |
| 43 | is( 0 + $x, refaddr($x), "no numification" ); |
| 44 | is( cos($x), cos(refaddr($x)), "no cosinusfication" ); |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | { |
| 49 | no overloading '""'; |
| 50 | |
| 51 | is( "$x", overload::StrVal($x), "no stringification" ); |
| 52 | is( 0 + $x, 42, "numifies" ); |
| 53 | is( cos($x), "far side of overload table", "cosinusfies" ); |
| 54 | |
| 55 | { |
| 56 | no overloading; |
| 57 | is( "$x", overload::StrVal($x), "no stringification" ); |
| 58 | is( 0 + $x, refaddr($x), "no numification" ); |
| 59 | is( cos($x), cos(refaddr($x)), "no cosinusfication" ); |
| 60 | } |
| 61 | |
| 62 | use overloading '""'; |
| 63 | |
| 64 | is( "$x", "foo", "stringifies" ); |
| 65 | is( 0 + $x, 42, "numifies" ); |
| 66 | is( cos($x), "far side of overload table", "cosinusfies" ); |
| 67 | |
| 68 | no overloading '0+'; |
| 69 | is( "$x", "foo", "stringifies" ); |
| 70 | is( 0 + $x, refaddr($x), "no numification" ); |
| 71 | is( cos($x), "far side of overload table", "cosinusfies" ); |
| 72 | |
| 73 | { |
| 74 | no overloading '""'; |
| 75 | is( "$x", overload::StrVal($x), "no stringification" ); |
| 76 | is( 0 + $x, refaddr($x), "no numification" ); |
| 77 | is( cos($x), "far side of overload table", "cosinusfies" ); |
| 78 | |
| 79 | { |
| 80 | use overloading; |
| 81 | is( "$x", "foo", "stringifies" ); |
| 82 | is( 0 + $x, 42, "numifies" ); |
| 83 | is( cos($x), "far side of overload table", "cosinusfies" ); |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | is( "$x", "foo", "stringifies" ); |
| 88 | is( 0 + $x, refaddr($x), "no numification" ); |
| 89 | is( cos($x), "far side of overload table", "cosinusfies" ); |
| 90 | |
| 91 | no overloading "cos"; |
| 92 | is( "$x", "foo", "stringifies" ); |
| 93 | is( 0 + $x, refaddr($x), "no numification" ); |
| 94 | is( cos($x), cos(refaddr($x)), "no cosinusfication" ); |
| 95 | |
| 96 | BEGIN { ok(exists($^H{overloading}), "overloading hint present") } |
| 97 | |
| 98 | use overloading; |
| 99 | |
| 100 | BEGIN { ok(!exists($^H{overloading}), "overloading hint removed") } |
| 101 | } |