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✏️ Editing: docs.t

#!/usr/bin/perl -I../../lib
# 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';

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