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#
# Tests for Util.pm functions:
# + truncate_to
#

#!perl
use 5.012;
use strict;
use warnings;

use App::Dochazka::CLI::Util qw( truncate_to );
use Data::Dumper;
use Test::Fatal;
use Test::More;
use Test::Warnings;

note( 'truncate_to with undef' );
is( truncate_to( undef ), undef, 'truncate_to undef returns undef 1' );
is( truncate_to( undef, 0 ), undef, 'truncate_to undef returns undef 2' );

note( 'truncate_to with empty string' );
is( truncate_to( '' ), '', 'truncate_to empty string returns empty string 1' );
is( truncate_to( '', 0 ), '', 'truncate_to empty string returns empty string 2' );

note( 'truncate_to with length parameter equal to length of string' );
is( truncate_to( 'a', 1 ), 'a' );
is( truncate_to( 'abc123', 6 ), 'abc123' );
is( truncate_to( '1234567890123456789012345678901', 31 ), '1234567890123456789012345678901' );
is( truncate_to( '12345678901234567890123456789012' ), '12345678901234567890123456789012', 
    'No parameter - length defaults to 32');

note( 'truncate_to with max length parameter one less than length of string' );
is( truncate_to( 'a', 0 ), '' );
is( truncate_to( 'abc123', 5 ), 'abc12...' );
is( truncate_to( '1234567890123456789012345678901', 30 ), '123456789012345678901234567890...' );

note( 'truncate_to with max length two less than length of string' );
is( truncate_to( 'ab', 0 ), '' );
is( truncate_to( 'abc123', 4 ), 'abc1...' );
is( truncate_to( '1234567890123456789012345678901', 29 ), '12345678901234567890123456789...' );

note( 'do weird things' );
like( 
    exception { truncate_to( undef, {} ); }, 
    qr/which is not one of the allowed types: scalar/,
    'cause an exception'
);
like( 
    exception { truncate_to( undef, -1 ); }, 
    qr/did not pass the 'greater than or equal to zero' callback/,
    'cause an exception'
);

done_testing;