#!perl -I..

# Examples from the docs -- make sure they work!

use strict;
use Test::More tests => 22;

# Find the module (1 test)
BEGIN {use_ok('Readonly'); }

sub expected
{
    my $line = shift;
    $@ =~ s/\.$//;   # difference between croak and die
    return "Modification of a read-only value attempted at " . __FILE__ . " line $line\n";
}

my ($a1, $a2, @a1, @a2, @a3, @a4, @a5, @a6, %a1, %a2, %a3, %a4, %a5);

eval {Readonly::Scalar $a1 => "A string value";};
is $@ => '', 'A string value';

my $computed_value = 5 + 5;
eval {Readonly::Scalar $a2 => $computed_value;};
is $@ => '', 'Scalar computed value';

eval {Readonly::Array @a1 => (1, 2, 3, 4)};
is $@ => '', 'Array, with parens';

eval {Readonly::Array @a2 => 1, 2, 3, 4};
is $@ => '', 'Array, without parens';

eval {Readonly::Array @a3 => qw/1 2 3 4/};
is $@ => '', 'Array, with qw';

my @computed_values = qw/a b c d e f/;
eval {Readonly::Array @a4 => @computed_values};
is $@ => '', 'Array, with computed values';

eval {Readonly::Array @a5 => ()};
is $@ => '', 'Empty array 1';
eval {Readonly::Array @a6};
is $@ => '', 'Empty array 2';

eval {Readonly::Hash %a1 => (key1 => "value1", key2 => "value2")};
is $@ => '', 'Hash constant';

my %computed_values = qw/a A b B c C d D/;
eval {Readonly::Hash %a2 => %computed_values};
is $@ => '', 'Hash, computed values';

eval {Readonly::Hash %a3 => ()};
is $@ => '', 'Empty hash 1';
eval {Readonly::Hash %a4};
is $@ => '', 'Empty hash 2';

eval {Readonly::Hash %a5 => (key1 => "value1", "value2")};
like $@, qr/odd number of values/, 'Odd number of values';

# Shallow vs deep (8 tests)
use vars qw/@shal @deep/;

eval {Readonly::Array1 @shal => (1, 2, {perl=>"Rules", java=>"Bites"}, 4, 5)};
eval {Readonly::Array  @deep => (1, 2, {perl=>"Rules", java=>"Bites"}, 4, 5)};

eval {$shal[1] = 7};
is $@ => expected(__LINE__-1), 'deep test 1';
is $shal[1] => 2, 'deep test 1 confirm';

eval {$shal[2]{APL}="Weird"};
is $@ => '', 'deep test 2';
is $shal[2]{APL} => "Weird", 'deep test 2 confirm';

eval {$deep[1] = 7};
is $@ => expected(__LINE__-1), 'deep test 3';
is $deep[1] => 2, 'deep test 3 confirm';

eval {$deep[2]{APL}="Weird"};
is $@ => expected(__LINE__-1), 'deep test 4';
ok !exists($deep[2]{APL}), 'deep test 4 confirm';